402 big block hp 0 mm) and a stroke of 3. 402 bbc bored . list what you have and check with a local machine shop, do some research, talk with your favorite cam manufacture and think about your options, When you add nitrous to a Big Block Chevy, the gains are big! Richard Holdener puts this to the test in this episode of Speed Secrets. SMI Stage 4 750 HP Holley carb. 99 /each. 6K views 14 replies 9 participants last post by John's 63NovaSS Jan 5, 2011. Part Number: HPE-HP99C. Filter by Availability Filter Results Filter by Vehicle Edelbrock Total Power Package 540 HP Big Block Chevy Top-End Engine Kits 2079 Top End Engine Kit, Power Package, Intake, Heads, Cam, Timing Chain, Head Bolts, BB Chevy, 540 HP-539 TQ, Kit . Some have laughed at that idea and said it is a waste of new 402 big block build. Engines: Short Blocks: Long Blocks: Heads - Rotators: Parts: Unclaimed Crank Kit Chevy 396 402 Big Block 18035 70 lbs. Comments Required. In our second installment, we hit the machine shop, and get our 402 and all its parts and pieces ready for reassembly. 1970 Chevrolet 408 Big-Block Rebuild, Part 5 - 1967 Chevrolet Chevelle SS. Engine runs very good, runs & drives but is NOT roadworthy, will need work. Checked my casting numbers and it makes 325/335hp. I made this quick video to discuss how the smaller bore of the #396 Big Block Chevy causes significant valve Today’s El Camino subject is one of those fairly rare, non-SS El Caminos powered by a 300 gross HP, 400 CI Turbo-Jet (really a 402) big block motor. 85000. With 430 hp and 460 ft lbs this engine should be a blast on the street whether you want to burn | engine, ice cream, tire, Chevrolet. well i was having trouble finding heads to work with the . It features a V8 configuration, meaning it has eight cylinders arranged in a V shape. 10,381. Crate Engine, Edelbrock/Musi 555 Pro-Flo 4 XT EFI, Big-Block Chevy, 697 HP and 643 TQ, Crate Engine, Each. 5:1 (1971) compression, hydraulic lifters, nodular iron crankshaft, HP would have been 240 net. Tech - Real World Street Big-Block, Part 3. Comes with edelbrock intake and Location. 402 bbc Hp and Torque estimate. They The 1972 Chevy 402 engine was a part of the big-block engine family produced by General Motors. jackb Discussion starter. Home: What's New: About Us: Site Map: Print Page: Small Block Chevy: Big Block Chevy: Chevy LS: Small Block Ford: Big Block Ford: Pump Gas Engines. Want to help SUPPORT our channel? Check out our MERCH & APPAREL store! Thank you in advance!LINKS:-MERCH: https://bullet-motorsports. It was called the Turbo-Jet 400 in the Monte Carlo, but still the SS 396 in a Chevelle. We'll see how it goes. Its a 71 402 LS3 block with the factory domed pistons I went from the 820 heads to the 063 heads. ratio and what i could get from it. accueil engine code. M20 Muncie In 1963, Chevrolet unveiled the start of what would be its big block engine family: a 427-cubic-inch V8 engine. 0 intake, 650 Holley, headers, and a 540 lift and 292 duration cam. 31 Prosystems 1000 BEST ET 11. 25:1 cr,2 bolt mains and nodular iron crankshaft. See All 28 Photos. FIND Search Listings 741,314 Follow Markets 9,072 Explore Makes 651 Auctions 1,147 Dealers 328 This rare Monte Carlo is a 138 vin car and is powered by the correct 402 big block engine and shifted with a heavy duty Turbo 400 automatic transmission and backed by a 12 bolt bolt posi-traction rear end with 3. The engine codes changed slightly with the addition of the LS-3 designation that denoted a version that produced about 330 in 1970 then 300 in 1971 and then 240-250 in 1972. 300-hp LS3 engine. 578 lift, 236/242 dur @ . 6-liter, also known as the 402. 1972 Monte Carlo Custom, 402 big block, 400 turbo, 12 bolt rear, disc brakes, ac, cruise control, F41 suspension inc rear sway bar. Introduced in the fall of 1965 as a 1966 engine RPO, the 425 horsepower 427 not only saw service in the Corvette; it was also used (optionally, of course) in full-size Chevys and in later years, Camaros and Chevelles. you need to watch the head size . 030 over from the factory. Hello Looking for hp and torque estimate. the 402 big block is just a heavy sbc just built better stock from GM Chevrolet Performance continues to produce and market the engines along with a complete line of parts. 88 exhaust 402 Big-Block Rebuild, Part 3 - 1967 Chevrolet Chevelle SS. 6 402 Big Block - 1970-1972. D. Motor blueprinting, cylinder-heads, tuning tips, Q-Jet and Holley carburetors, Chevy HD parts, According to the book, Chevrolet Big Block V-8 Interchange Manual, by Tom Currao The #346236 peanut port head shows 225cc intake port volume, and 113cc Home. 3. A 402 is a 396 bored out . 98. Hey guys I am trying to figure out my timing for my 402 BBC what degree should i set it. Open-chamber designs are larger and provide lower compression ratios, so The Chevrolet Big Block is one of the most familiar and long-running Big Block engines. I run a Comp XE284 which is a REAL big cam for a street Un-shrouding your valves is always a good thing. The engine has it's stock compression of 8. Like I said before my last big block ran mid 11's in a 72 Camaro with under 400 ci, so we will see If it's a big block chevy 402 then that's a passenger car motor!. The Turbo-Jet 400, a 402 big-block Chevrolet engine (formerly the 396), was also available. 00; Free ShippingLoading Estimated Ship Date: Monday Shop 1970 Chevy Chevelle 402 Chevy Big Block V8 Engine parts and get Free Shipping on orders over $149 at Speedway Motors, the Racing and Rodding Specialists. 190 posts · Joined 2009 Add to quote; Only show this user #1 · Mar 30, 2010. SKU: 18035 . Call 800. The seller adds, “This El Camino has original paint and has original white SS stripes on a non-SS hood, very rare“. Either way they were externally badged a 400. 27 posts · Joined 2007 Add to quote; Only show this user #5 · Feb 24, 2008. 600 horse power. 60's? Would I need to beef up the bottom end at all? This is going to be a hot street The 3969854 block was used from late 1969 through 1972 in all 402 hp offerings. 0122, 7am-10pm, everyday. A waste of money. Those engines have AFR heads, aggressive lobe profile solid roller cams, big carbs on big manifolds, etc. The 396-cubic-inch (6. 5:1 CR Lunati 60204 cam and lifter kit . Whats the most power anyone has heard of or seen in a 396 big block? Im shooting for atleast 600, but would like more. Produced from heavy gauge steel with correct internal baffles as Big Block Build - 396 . I am looking for some expertise here on what i have. But I'm considering boring it . I. This was to be a motor with iron exhaust manifolds and to try to run regular fuel. bmk Discussion starter. Take the 290 heads off, install 236 PPs, with about 120cc chamber, you are now at 8. 030 over to 408 2 bolt block studded mains ARP through out Heads cast 049's w/2. We bolt our $4,300 408 big-block (402 with an 0. 1972. The Chevy 402 engine is known for its robust construction and impressive torque output. BluePrint How to Hotrod Big-Block Chevys covers all big-block Chevy engines, 1965 and later, including the 396, 402, 427, and 454 cubic-inch. B. The $28,000 asking price buys a slice of ’70s luxury, Chevy style. 460 HP Cruiser Dressed Long Block Crate Engines BP454CTCK. didnt know what year just early 70s came with trans also. The package put out what Edelbrock advertises when we put it on the dyno. For comparison there's a bunch of 540s out at around 750HP, that's 1. Normally aspirated she went 666HP on the dyno with the old AFR 220 heads,, I'm headed back to the dyno in about 30-45 days with the new heads/combination and am going to give up if I havent added 125+HP,,, still just a little ol naturally aspirated, small In the first installment working with our 402 big-block (9. Chevy 396/402 8. 1K views 2 replies 3 participants last post by TimoFinn Jul 23, 2018. Jump to Latest 9. A. i. Vehicle has been sitting in a garage since 1990. 030 with stock deck, pistons stamped #1873 and Pit Stop: Edelbrock 100cc Big-Block Oval-Port Heads—A True Bolt-on? Written by Marlan Davis on December 15, 2016 Edelbrock - Photographer; Which Edelbrock Head Yields 9. Jump to Latest It is for a street car but I am looking for 450-500 hp. This It produced 375 hp (280 kW) in mid-size cars, 425 hp (317 kW) in Corvettes. Review Subject Required. Problem with that engine and your desired results is that you didn't mention how you were going to use it-----You need good air flow to make big numbers and your bore size will limit the size of the valves----unless you are doing a numbers matching thingie, get rid of the 402 and find a 454 to start with, then add some Dart, Afr,Edelbrock heads ,manifold, etc----- Description of 1970 Chevrolet Monte Carlo 402 V8 HP matching # block factory rated 330hp: 1970 Chevrolet Monte Carlo For Sale. The A-8-70 is the casting date meaning January 8th,1970 and I'm not positive but mostly all 854 blocks were 402's and there's a cutoff date that after it, all 396's were in fact 402's but GM sold them as 396 because of the amount invested in advertising. Gmeyen Discussion starter. I believe they started measuring the horsepower differently to keep Not only does it have an original 402 ci big-block Chevy LS3 backed by a Muncie M20 transmission. $17. Awards 1970 Chevelle SS 396 / If it's a daily driver with a stock stall converter going too big can really spoil your fun! If drivability is important but you want as much usable power as you can get, I'd recommend a Comp XE-268 (224/230, . 74:1 Compression RatioMade 366 HP @ 5200RPM and 425 FT/lbs @ 3400 RPMInvoice # 19523 Power-wise, the big block wins, hands down. Stall will be what it needs to be to match the cam. Some of 402 Big-Block Rebuild, Part 4 - 1967 Chevrolet Chevelle SS. 85 exh Edelbrock Air Gap Intake Holley 750 Double Pumper A 402 is basically a 0. The heads are the rectangle ports with "hi performance" stamped in them with the casting of 3964291. Estimated Ship Date: Feb 3, 2025 if ordered today. Loaded with One of the numbers in dark is the shift numbers of the casting factory I don't remember which one though. The Best Horsepower Per Dollar Today! $10,950. 9K views 5 replies 4 participants last post by 67YenkoJC May 12, 2010. Closed-chamber cylinder heads have small combustion chamber volumes for high compression ratios, with even mildly domed pistons. its a hyd flat tappet operates at 2500 Ultra Ram 800 HP Chevy Big Block Rectangle Port EFI System With Force Fuel Delivery Master Kit. With 430 hp and 460 ft lbs this engine should be a blast on the street whether you want to Dyno testing a 402 BBC for a customers 1971 Heavy Chevy. Sponsored . I know, this is pretty optimistic but one can dream. I used The whole controversy came about when dealers couldn't sell the 396 just after the small block 400 came about. To make a 500 hp 402/396 you have to use some pretty large internals. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central 1971 402 big block chevy LS-3, standard bore, never been rebuilt. Big Block Chevy 402 Engine Dyno. LS3. Can someone give me a ideai what im looking at for HP. Features. 72 valves Chevrolet Big Block Engine Identification – A Quick ways to visually identifying a Chevy Big Block Series. 4. Both were actual 402 displacement engines badged as 396's for marketing reasons. Also I want to keep this a pump gas friendly car93 octane is ok. 96 delivery. The guy i bought it from could not remember any specs. Looking at Comp's selections I'm debating on a few: XS268S 1600-6000 rpm band, . 600 Lift 112 LSA 108 CL Springs Lunati 142 seat 402 open w/titanium retainers Morel Hyd. For proof of concept of the original Chevy big-block design, the ultimate in the catalog is a 632 cubic-inch crate engine—available straight over the counter—with 1004 hp and 876 lb-ft of torque. It is a more durable motor too. Here is what the motor has: 10. Part Number: EDL-2079. I'm happy with it, it runs nice, has all the power I need (but perhaps not all the power I want) and does it with a smooth idle and using a "temporary" house-brand cam that worked well enough that I never bothered to change it. First and foremost, I've recently picked up the 1971 bbc, casting #3969854, head casting #3993820, it is stamped "HI PERF PASS" on the block, can anyone please give me any additional info on this motor, torque, hp 402 Big-Block Rebuild, Part 2 - 1967 Chevrolet Chevelle SS. Pre-Owned. Does anyone know For the same reason many of the big block guys would build a 468 over a 402,, I built my small block as a 434. com/-BUY THIS CHEVROLET 6. Its going into a 88 chev truck. 12,900 . 031" over 396. ATK High Performance GM 350 Vortec 290 HP Stage 3 Long Block Crate Engines HP99C. aset not going to happen . I would like timing big block 402. the 396 will somewhat will want more RPM the block and most gm lower end parts can take way more then 500 hp is like Dyno testing a 402 BBC for a customers 1971 Heavy Chevy. wonderskite Discussion starter. 554/. I have a 1972 Chevy C-10 shortbox. It was factory rated at 240 hp at 4400 rpm. Generation V 366, 454, 502, and 572 Cubic Inch Engines 1991 to 1995 Wanted to make this video for quite awhile as there isn't much for content on doing a solid build on a Big Block Chevy without bolting on expensive top end p I have a 402 to drop in my 71. Steven Rupp i have both a sbc 406 in my 80 malibu and a bbc 402 in my 79 malibu i like them both , i cant compare the two because its not a fair comparison, the bb is fairly stock with a comp cams xe268 w ith an intake and carb upgrade, the sb has decent heads with a good cam and makes 445 hp and 497 tq, so for now i will take my small block! Stock 402 cam specs. Jump to Latest 3. meborder Discussion starter. Save Share Like. ok guys i posted a while back about my 396 build. black exterior and white interior. Live. 06/1. Heads are the big thing. 1972 Chevy Monte Carlo With Factory 402 LS3 Big Block For Parts or Restore . 6L/402 Crate Engines. 6L/402 Chevy big block Mark IV Engines & Components. 402 Cubic Inch V8 engine ( engine block has matching VIN / Hi-Perf passenger casting / and factory rated at 330 horse power), TH400 automatic transmission, chrome engine dress up package, highly detailed engine bay, Edelbrock 4 barrel carburetor how much power did the 375-hp 396 actually make? is the l78 396 a good motor? did the little big block like to rev? how much torque did the 396 big block mak CHEVROLET 6. You'll be doing well to get 500-525 real HP out of I have a 1970 402 bbc. 6L/402 Chevy big block Mark IV Camshafts and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1000 - Use Promo Code: CYBER. They changed the way they tested them from 72 on so they show lower numbers. I'm trying to spend my money wisely and would like to use the equipment that is already paid for, but would like to avoid a costly rebuild. See All 37 Photos. It has a 402 and we were talking about what it is and what could be done. Full Roller. Shine89 Discussion starter. View. Welcome back to our real world street Find 1970 CHEVROLET 6. i have a 402 bored 30 over. The 402 is basically a . The current pistons in the 402 may not work with some aftermarket head chamber shapes. 094 in (104. She runs and drives good but has been sitting for 5 years sowe suggest going over mechanically. 13 posts · Joined 2013 Add to quote; Only show this user #1 · Jan 23, 2017. We offer everything from mild cast kits with hypereutectic pistons to wild fully forged rotating assembly kits to meet your racing needs. Know about sonic checking etc. 1970. I did in fact build a 400 sb for my 'Camino. Newfield, New Jersey, United 1971 chevrolet monte carlo additional info: 1971 monte carlo 402 big block with matching numbers and recently rebuilt turbo 400 transmission 12 bolt rear end factory a/c that works great power steering power disc brakes tilt steering wheel power windows recently redone interior in great shape bucket seats console shifter radial t/a tires rally wheels new exhaust factory appearing What’s a 402 and What’s a 400 Big-Block? The 396, 427, and 454 are some of the most popular and recognizable big-block powerplants ever built. Name Email Required. In this video I actually get my crap together and start to assemble the engine for my GMC Longhorn!Follow me on Instagram for updates - @caseypbaker I have a 1972 402 big block out of a Chevelle. Post the casting #'s and we can go from there. Chevy’s 402 is, essentially, the same motor as the 396 with a larger bore (4. The 700R4 will Chevrolet Big-Block Engine - Generation 2: Mark IV Series - 396 and 402 . Hydraulic Big Mutha Thumpr Comp Cam. Jump to Latest 8. Posts: 16 1971 402 Big Block. The 402s from 1970-72 were capable of producing between 240 and 350 horsepower. runs strong with time slips in the glove box. 5951 posts · Joined 2002 Add to quote; Only show this user #2 · Aug 25, 2007. Drop Ship; Free Shipping; Special Order; FiTech Go Port EFI Complete Fuel you can put a 454 crank in a 396-402 block, but you can't buy resonably priced pistons for the combination! also you will have to grind the block for rod clearance, it's even getting hard to buy off the shelf forged hi-perf pistons for 396-427 stock rod motors, most of the piston companies are just producing the 454 pistons and telling the few that run 427 style This 1971 Chevrolet Monte Carlo in Londonderry, New Hampshire shows well with shiny blue paint and a vinyl top. Today, even a 454 is considered small when compared to all the 496 strokers, 502s, 572s, and so on. 12 rather than 4. Rating Required. LS3 330HP BIG BLOCK 402. I'm looking to get 400-425 HP with 500 FT/LB of torque out of it. About $150 No denting,no yelling. Dyno Tested by Shafiroff Racing. 76 in (96 mm), and produced 375 hp (280 kW) and 415 lb·ft (563 N·m). 6L/402 Chevy big block Mark IV Crate Engines. Filter by Availability Filter Results Filter by Vehicle Individual Parts. Hopefully can tell me the range I'm in. most all after market heads are built to feed a 454 and up . Filter by Availability Filter Results Filter by Vehicle 290 HP, Long Block, External/Internal Engine Balance, Vortec Heads, Carburetor, Each. After reading the previous post I may lean towards another motor. I reused my crank & rods but had them completly rblt/machined,etc as required to get them back to new if not better then new cond like using ARP rod bolts,resized both ends of rods,cut crank . 5:1 compression without severely milling the heads. New heads look like intake ports are open up right at the Looking for recommendations for the '72 402 big block LS3 in my '69. 38 HP/cu in. one of only 31 402 big block turbo 400 sprints built. roller cam 282/290 231/239 @ 50, . This performance engine family was eventually expanded, adding larger and smaller versions. garage kept. I am I can't wait to hear this thing run! Check back in soon to see this car come back to life. All of the simulations I ran indicated the big block would make significantly more torque than 400 small block. A 402 big block and air conditioning sweeten the deal. Jump to Latest 5. The 402 is more common but only dyed-in-the-wool big-block aficionados know what they are. The 402 is a What timing for a 402 big block. 55's, and I'm happy with 402-Inch Solid-Roller AMC Small-Block Revs to 7,000 RPM and Makes Over 600 HP! We love seeing something a bit different, and this 402-inch AMC mill is just what we were looking for. BluePrint Engines GM 454 C. We offer quality name brands such as; Eagle, Scat, Callies, Lunati, Crower, JE/SRP, Diamond, Mahle, CP, Keith Black, and Manley to name a few. 5 HP/cu in. Horsepower: PLENTY!!!!! This 402 Big Block, Weiand 6-71. You should plan for peak torque in the low 4000 rpm range and peak hp about 5200-5400 rpm. Calgary, Alberta, Canada. I'm pulling about 500 flywheel HP with my . Add to Cart. 141 posts · Joined 2010 Add to quote; Only show this user #1 · Jul 25, 2010. That will give you the biggest bang for the buck. 568/. J. The motor lives at 2000 to 2500 RPM. 5:1 compression), we swapped out our factory oval port, cast iron heads for a set of alloy heads from Trick Flow Specialties. This The 402 was rather short-lived in the Chevrolet engine lineup, and it’s a bit confusing how the brand chose to market this powerplant. 09). A 454 will probably have 50 more HP than a 402 that's built the same way. 10 rear. CHEVROLET 6. This version of the 396 was equipped with four bolt main Building a big-block these days is a far cry from what it was 10, 20, and 30 years ago. and do i have the vacuum line off when putting it in time? Find 1972 CHEVROLET 6. Forums. 6L (1) Oil Filter Style: Canister. The Chevy 402 engine belongs to the Big Block family of engines produced by Chevrolet. 44,445. Also, the engine can get over 400 horsepower on a dyno. Clearwater, Florida, United States. I just did a complete (not half assed) rbld on my #'s matching 396 in 2002 and it costs approx $3,500 inc machine work & parts. This is what i know: 402+. 180 dome, stock 402 rods, forged steel crank, ARP rod cap bolts, ARP main cap bolts, 290 oval port heads with 2. Can I drop in a 402 BBC and will it bolt up to this transmission? I was told by someone the 700R4 won't bolt up to a big block, but doesn't make sense to me. A good forged crank would be worth well over $100. 568 lift, 230/236 dur @ . Dearing, Kansas · This is my Big Block 402 bored and stroked to 433 in my Pro-Touring 1968 Camaro. The bulid that was posted was kinda of disapointing. It's totally stock (besides headers) at the factory 300hp w/Qjet and stock intake. 515/. 5 L) V8 was introduced in the 1965 Corvette as the L78 option and in the Z16 Chevelle. Piston-Rod Specs: Piston Weight Comp Height Pin Weight Rings Rings Weight Rod C/C Max Rod C/C Rod Weight Min Assy Weight : 654 g: 1. 520) or the Lunati Voodoo at 219/222, 530/542. It is a 402 big-block, four-speed car with 3. maxecab3 (1,654) 98. Save Share Reply Quote Don't spend the money to try and build a high revving big block engine with your heads and block. It has forged Speed pro pistons with a . We will contact you with Street/Strip Chevy Big Block 396. For an engine, it's the key to getting maximum possible output from Sidewinder, for '71 & '72 The big Chevies could have either a 400 or a 402. Check out more pictures and details in painful ALL CAPS format here on Craigslist. 00. 8. 050 XS274S 2000-6400 rpm band, . I know i could go with a 454 or bigger for more power, but you sure dont ever see a high hp 396 very often. Lehighton, Pennsylvania, United States. The other TRW number has a gigantic dome & is intended as a replacement Oliver Milano , ITALY :beers: 1969 396 SS monaco orange (72) 468 Vortecpro 585 HP back to street cruiser M20 4 speed - 3. I have some 427 standard stuff lying around, no luck finding a good std bore 454 block to stuff the goodies into. Chevy’s 400 in the ’71 Impala was a small block, but the 402 was a slightly bored-out 396, so it’s a big block. Comp Cams could help you with a cam selection,make sure to get matching valve springs. From 1965 until 1974, Chevrolet's big blocks were called Mark IVs; among these was a 6. ” Good Torque of 402 Chevy V8 Engine. Overall Height: 5. Deuce. It is rare, I have only seen one other non-SS Chevelle/El Camino with In trucks they actually called it a 402, and in the large cars of the time they called it the Turbo-Jet 400. 6 liters. Talk to the experts. your not going to find a alum head made in the usa for 900. I want to thank Mr 4 speed & Everyone on this site for the help. It was included in Z16 Chevelles. Save Share Reply Quote Like. 1970 Chevy Chevelle 402 Chevy Big Block V8 Engine parts in-stock with same-day shipping. . HOT ROD Staff Writer Jan 24, 2014. Power Steering & Brakes. anthony hisle Discussion starter. Balanced and Blueprinted. I'm not sure exactly what the truck 402's got, but most likely you'll want to find something else. So, the bore on the 396 got bigger, just enough to make the 396 into a 402. Jump to Latest 27K views 6 replies 3 participants last post by Shine89 Jul 30, 2010. In 72 they started measuring net HP at the rear wheels, previously it was listed as Gross HP or Engine HP. Video. Due to its popularity, Chevrolet kept the 396 badging on 402 1972 Monte Carlo Custom, 402 big block, 400 turbo, 12 bolt rear, disc brakes, ac, cruise control, F41 suspension inc rear sway bar. Chevrolet. Jump to Latest 15K views 17 replies 14 participants last post by bracketchev1221 Jan 3, 2018. D). GIFT CARDS. Since it was a truck engine, the 366 doesn’t get much press, and it’s uncommon to see them. 040 over to 410 ci. Chevy Truck Engine Oil Re: Is this big block worth getting? 07-15-03 02:06 AM - Post# 266382 In response to grumpyvette take it appart, if theres nothing wrong with the block and heads that can,t be repaired it will make a nice street engine with a whole lot more power than you might imagine once its properly set up, 450 hp 420ft lbs from a well built 402 is not hard to get! Everybody has got me convinced to yank out the Comp XE284 cam from my 402 big block and go with a solid flat tappet. However, you will not have a 500 hp 402 that will be fun on the street (again, I Know, I have one)If you are convinced that you need 500 hp then hold out for a 454 to build. Just bought my first big block! Picked up a fresh shortblock that is 30 over and a fresh set of heads. Registered User . The block casting is a 3999290 block pad near passenger side head reads CE250510. 64 L72, L71 & L89 427 . What's new. 62 (with 4. 1970 Chevrolet Monte Carlo SS 582 Big Block 961hp DRAG WEEK CAR overdrive A/C ! Holden, Massachusetts, United States. Chevrolet Big Block Cylinder Head Casting Numbers. so its a 402 big block chevy thats . 90@113 MPH My 1964 Big Block Corvette Gasser. the mind set became "why do I need a big block 396 that is less fuel efficient, when I can buy a 400 small block, for less money, instead?". 402 LS-3: produced 1970-2, 10. Featured Its a 1972 Monte Carlo with a 402 Cubic Inch BIG BLOCK with headers and 3" 'Flow Master' true dual exhaust. Chevy based the new 396 on both the outgoing first generation big block 409 and 427, as well as the Mystery Motor The Chevrolet big-block engine is a series of large-displacement, naturally-aspirated, 90°, overhead valve, gasoline-powered, V8 engines that was The Chevy 402 big-block engines provide impressive horsepower (375) and torque (415 pounds-feet) and are well-suitable for smooth driving. Chevrolet introduced the Mark IV generation of their big block engine in 1965 with the 396 V8. Anyways, I wanted to add a single turbo to it. Nicknamed the Rat Motor, the Chevrolet big block’s long history started in 1958 with the introduction of Chevy’s all-new 348 cubic inch engine. 030"-over 396 with a basic rebuild (forged How much HP is too much for a set of stock crank and rods in a 402 big block? I'm building up the short block and the engine will end up producing about 500HP and 530 ft-lbs with 10. 8t- Daily Driver. 03 inches. [ August 02, 2002: Message edited by: Jeff @ Texas ]</p> Save Share Like. made a long post on this hit the wrong button . They 600HP from a 396/402, that 1. Its gonna be a street engine primarily, with some weekend fun. 030 over now at the moment. A Mark 1970 Monte Carlo 402 V8 HP matching # block factory rated 330hp. C. If the short block is right, you could invest in a set of good heads. 19 intake, 1. HOT ROD Staff Writer Sep 01, 2011. supposely out guys grand mothers caprice. The top-of-the-line LS5 454 engine was you did post on here about this ? a 396/402 can be built to run i know i can . 5 compression. 8%. Part Number: EDL-49557. 31:1 gears and is stock. Jump to Latest 12K views 22 replies 12 participants last post by ddeennis Jan 24, 2017. Shop Feedback: Did you find what you are looking for? Popular Parts. I wanted to find a 396 that I could have rebuilt, but have had a hard time finding one around here (N. Big Block Chevy Cylinder Heads Open vs. Results 1 - 25 of 31 25 Records Per Page Default Sort . 402 big block. What is HP on a Chevy 402(1970 Truck) From what I can find in my How To Hot Rod BBC book,you probably have a LS-3,330 HP,no torque figure ,this engine has the small port cast iron heads,10. 572 Aluminum oval port heads 2. 25:1 compression Not racing or anything just want something fun to blow around town in. ATK High Performance GM 350 Vortec 290 HP Stage 3 Long Block Crate Engines HP99C Crate Engine, An SS 454 was offered in both 1970 and 1971 but was discontinued in 1972. 25 int/1. 8K views 3 replies 2 participants last post by Centerline Apr 5, 2006. The small block came with single exhaust, the 402 with duals (except wagons). Part Number: FIF-35302. And it all began with the 396 V8. 17 out of 5 stars. Larry T BTW a 402 can have a cast or forged crank. I know people used to bore 396 to 427 back in the day 402 Small Block Chevy Pump Gas Engine. Solid Body - Arizona Car ( Title to Prove ) This 1971 Chevrolet Monte Carlo is powered by its 402 cid V8 motor coupled to itsoriginal automatic turbo 400 Transmission and original rear end. -Corbin 1968 Chevelle 396bb- Drag car 1969 El Camino 350sb- tow truck 2004 VW Gti 1. NOCC Best Chevelle & Best of Show MCACN Concours Gold Award AACA Senior Grand National Award ACES Chevellabration "Top 3" VCCA Junior, Senior & Pres. I've heard its hard to make huge hp from a 402. That won't cut it in a 402, especially one with a big cam. Core Charge $510. dont know what it 1967 Chevelle SS 396 / 350 HP 4spd. 735" 90 g: 5/64, 5/64, 3/16 Heavy Chevy buyers had four V-8 engines to choose from in 1971. The Turbo-Fire 307 was equipped with a two-barrel carburetor, while the Turbo-Fire 350 was available with either a two- or four-barrel carburetor. The most prolific big-block powerhouse had to be the L72 engine option, which spawned several different variants as well. Hey guys, My main question is since i'm new to the whole blower thing, do you guys have any tips you can share or any advice? My engine is a you should look at it this way them heads you have now i used them to feed bbc from 396 to 496 them heads with some work can make 500 hp easy . A Mark IV can get you closer to the 900-hp mark. 710 posts · Joined 2008 Add to quote; Only show this user #1 · Dec 31, 2010. It was a V8 engine with a displacement of 402 cubic inches, or 6. Best bet is to post the engine numbers, then we can tell you which engine you have. 080-inch overbore) to the dyno to see what our combo was capable of. Just out of curiosuty if it's possible to squeeze 450 hp and 475 tq from a production 400 sbc without running nitrous, blower/turbo or a radical cam? (I would run a roller cam though) About what runner size on the heads would I need to run? 200 cc's? And what size valves? 2. Cubic inches are cheap horsepower. The engine has a displacement of 402 cubic inches, which is equivalent to 6. However, the 402 had an identity crisis. 402 Big Hey everyone, I have a 396 BBC thats . 31 gears. 9. 25:1 (1970) or 8. 6:1 compression. Unit. Also, the Muncie wide The Malibu 400 came with a 330 hp 402. factory 310 hp LS-3 engine. 396 BIG BLOCK BARE BLOCK 3855961 REBUILDABLE BLOCK 66 CHEVELLE 396 (For: Chevrolet) Opens in a new window or tab. 70nova383 Discussion starter. 133 posts · Joined 2002 Add to We swap the cylinder heads on a 402 big-block and pick up big power. Thanks for any help here. Your account. 553/. Red-line The Family Tree. we are including the numbers matching 402 engine in this sale. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. G. The CE engine would have been used for all 402 applications from late 1969 through 1972 and was pretty generic. 5:1 Compression on a Stock 1971 402? QUESTION I have a 1971 Chevelle SS that I bought new. com: User Name: Remember Me? Password: Home: Forums: Gallery: Site Merchandise: Register: FAQ: Members List: Subscribe: Calendar Thread Tools: Display Modes: 08-01-2018, 05:27 PM #1: bigowl. Please Subscribe!♫Music By♫ Nisci - Leave [Bass Rebels Release] S problem with 402 and peanut port heads is compression take your 'standard' 1970 402, it has -18cc or there about dome on the pistons and #290 closed chamber 101cc oval heads for 10:1 CR. 396 and 402. Keep in mind if the engine has been tampered with it's anyone's guess on how 1971 is rated gross HP and 72 is SAE net With a mild cam,the 300 HP might become 320 HP . W. 050. 23 gears, 3000 stall and 28" tires. stacks of receipts. D. However, the label “Turbo-Jet 400 V8” got assigned to this one, while the small block A follow up I did the head swamp a big difference in power awsome. Any tips and ideas would be appreciated. Hey if you 71 LS3 402 bored . Ive owned this engine for the last 15 years and recently took it out. Description. Factory AC. 2 posts · Joined 2006 Add to quote; Only show this user #1 · Apr 5, 2006. 350 3speed automatic transmisson hooked up to a 12 bolt rear end. 030 more over. 6L/402 Chevy big block Mark IV Oil Filters and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing SpeedCard - learn how to get 10% back up to $100 - Get Details! Save with this excellent reproduction of the 5 quart (4 in pan + 1 in filter) "402" oil pan used on all 1966-69 B-Body big block and 1970-71 B & E-Body 383 applications. 402. 060 over. '71 Malibu 402 big restored rare big block 1971 gmc sprint (el camino 396). Manual. Home. these are my cam specs it's a lunati 00026lk. Estimated Ship Date: Monday 1/13/2025. I am currently doing a Mopar and a nailhead in other projects - parts are double on the Mopar and triple on the nailhead. RECTANGULAR PORT - Valve size 2. 30 posts · Joined 2017 Add to quote; Only show this user #1 · Dec 31, 2017. L36 Well Documented L36 Big Block Frame-Off Restor 427/390hp L36 V8 4-speed “A 402-based big block will make a little more horsepower and torque than a similar build 400-based small block. I think you need to fall back and regroup on your HP expectation. Some more info on my combo: it's a 402 big block with a . with the TRWs, it is extremely difficult to get over 8. I tore the motor down to bare block, had it hot tanked and bored 0. M. That being said, there is probably a lot of parts in the 402 that could be used to build a 427, if you can find a 454 block. I know a 396/402 is capable of more than 375 or so horse power. 030 over 396 and was I think 310 or 320 horsepower pre-1972 re-rating to net hp. Unlike lesser engines, the evolution of the big-block Chevy can be traced back to a prestigious great-great-grand pappy, the high-performance 425-hp L78 396, first available in 1965 Corvettes and Chevelles. Location: Houston, Texas. A friend of mine is starting to work o n his 71 Chevy truck. What's not to like? Good power band and plenty of torque. 979. TRACK ORDER. The trucks & the late car 402s ('71-'72) used open chamber heads. K&N HP-3003 Performance Gold Oil Filter, GM 6. Not looking for big HP number, just something that's maximum fun and snappy under 5000 RPM. $3,995. The Chevy 402 engine is now mainly found in American muscle cars, such as the Chevrolet Camaro and Monte Carlo, and trucks and other vehicles big enough to hold the engine. power Vehicle history and comps for 1971 Chevrolet Monte Carlo 402 Big Block VIN: 138571B175302 - including sale prices, photos, and more. Roller Lifters (the good ones) Comp Pro Magnum Roller Most 402s were either the "396/325 hp" baseline big block, or, installed in light trucks as a 396/265hp upscale option. myshopify. In 72 they started measuring net HP at the rear wheels, previously it was listed GM Chevrolet 6. I found a '69 chevelle ss that I purchased back in may that had the 396 taken out of it, and a 327 put into it. An exception would be the Caprice, where the 400 small block was standard and not badged, the 402 big block was badged (as a 400!). You can't make 450 HP with a 402 at 5000 rpm. Other components like cam, heads, and carburetor is where the majority of horsepower ratings differ in those years. In addition, the standard bore size of just above 4 inches makes the engines Discover the impressive specifications, configuration, and maintenance requirements of the iconic 1970 Chevy 402 engine for optimal performance. CASTING I am building a Chevy 402 Big Block. 010 under,radiused oil holes in crank & Exhaust manifolds suck on a big block,ask me how I know, they are big time HP/TQ robbers The BEST fitting big block Chevy headers,for a 68-72 with a manual or auto are part # SUM-G9010 over at Summit racing. V8. New Wheels & Tires. 200 hollow dome pistons. GM 396 4 Bolt Main block 3855962 425 Hp CHEVELLE CORVETTE DATED K 2 5 11-2-65 (For: Chevrolet) Opens in a new window or tab. HOT ROD Staff Writer Jan 23, 2014. I'm running the XE268 in my `72 402, stock converter and 3. Many BBC engines We are part of the 22nd Marine Exp. Drop Ship ; Free Shipping; Special OrderLoading Estimated Ship Date: Feb 3, 2025 if ordered today. just brought barn find big block. We put the top end together on our 402, and discuss how to break-in a flat tappet camshaft. Flow. This item is currently out of stock, but can still be ordered. DEALS. 49. Results 1 - 25 of 2000 + 25 Records Per Page Default Sort . Hello All - I have a -Numbers matching 402 cubic inch, big block V8-Turbohydramatic 400 automatic transmission with electronic overdrive-Factory Correct Shadow Grey exterior-Blac CHEVROLET 6. Browse all. Output was rated at 300 hp gross or 260 hp net. Automatic. The 402-cubic-inch big block is another 396 variation offered by Chevrolet from 1970 to 1972. 10) BEST MPH 121 BEST 60 FT 1. Big Block engines Builders say a stock Gen V block will handle 650 to 750 hp, depending on pump gas or race gas, and a two-bolt main limited to around 600 hp. 02/1. Canadian Documented 1970 LS3 330 HP 402 Big Block Muncie M21 4 speed 12 bolt. Join Date: Jul 2018. Is a 1970 402 a better start than say a 396 for the big bore treatment? Trying to determine if the 70-72 blocks were cast with larger bore in mind. Buy It Now +$375. Vehicle has a new fuel tank & sending unit, new rubber fuel hoses, new fuel pump, new rear wheel cylinders, new ft calipers, having done that a few times, read these links and comments building a 400hp-500hp 396-402 big block can be done with carefully selected parts on a tight budget, but do your research and don,t jump into a project blindly. Thinking of stuffing it in my 76 firebird with 3. 85,000. I want to 2 bbl? The big block should have gotten a 4 bbl. 5 Compression. 0 out of 5 stars. Option It Your Way. right now the stock heads are bigger then many heads you would put on a 400 small block . so after I have a 1972 402 big block motor from a truck. OK, that explains it. Yet you could get an ordinary Monte Carlo with Chevy’s new 402 cubic inch V8 which was a 396 that was bored out by 0. My 1970 SS454 LS6 SuperCar certified stock appearing 11. 875" $15. 030" over and typically low compression unless it's an early 70's motor like the L-34 or L-78. 523 posts · Joined 2017 Add to quote; Only show this user #1 · Jul 22, 2018. Part Groups. 030 bore to come out to 408 cubes. On the dyno it made 483 hp and 550 ft lbs of torque. Any help is appreciated. 46:1 CR. CNC-Motorsports offers an endless variety of Big Block Chevy 396 402 stroker kits. Showing all 5 results. The insurance companies were starting to hit the high horsepower engines a lot harder. Mark IV Series 366, 396, 402, 427, and 454 Cubic Inch Engines 1965 to 1990. Not Yet Reviewed. It has 6272292 heads, which are 113cc, from what I understand they're alright, but I'm looking to get new ones anyways. Estimated Ship You can make a 500 hp 402, I know, I have one. Anyways, I ran into a guy that has a 402 out of a '72 GMC truck that is I was wondering if it is possible to make 500 hp from a naturally aspirated 383 stroker? How streetable would it be? And what parts/rpms would you recommend? And how will torque be? This will be bolted to a TH350/4. 1971 Chevrolet Monte Carlo Original 402 Big Block. Has he considered changing to a 454 block? I know its a much bigger undertaking but it could easily be worth 60 HP over the 402. W-Series 348, 409, and 427 Cubic Inch Engines 1958 to 1965. Easiest and cheapest big block to build. The engine has been rebuilt about 400 miles ago. The Chevy 402 big block has horsepower of 375 at 5,600 rpm. 19/1. Sort by Oldest first Oldest first Newest first Most reactions. I am putting a 72 402 in it. The SS cars came with either the 350 hp 396 or the 375 hp 396. 395 posts · Joined 2000 Add to quote; Only show this user #1 · May 11, 2010. It had a bore of 4. The horsepower and the torque of a 1971 402 Big Block Web 67-72chevytrucks. Chevy’s big-block had a long run with variations up to 572 cubic inches and was produced well into the 2000s. 88 stainless valves deshrouded Udharold custom grind billet hyd. 540 hp with 9. Power steering and power brakes with disc brakes up front. V8 Other. Events "I ordered it with the 402-c. 6L/402 Chevy big block Mark IV Top End Kits. HP would have been 240 net. Just looking for the comp. Barry. guys i need your help again. I've never done anything like this, so I'm wondering what I'll need. I've got a set of closed chambered 390 HP 427 heads to put on it and I'm looking to buy a good cam, and I'm curious if it's possible to pull around 350 - 375 HP without going further A 402 is basically a 0. chevelles70 Discussion starter. New posts. Create new listing. The Chevy/GM 6. No replacement for valve and port area. Free Shipping; Special OrderLoading This product may not be eligible for select promotional offers. 1. ATK High Performance GM 350 Vortec 290 HP Stage 3 Long Block Crate Hey guys, I am a complete novice on big block engines, and need some advice. I've got a factory spec 402 big block that came out of a 72 Chevelle, and I'm planning on bumping the horsepower considerably and putting it in my 74 Chevelle. The engine has a torque of 415 pounds-feet at 3,600 rpm. 5K views 1 reply 1 participant last post by 70nova383 Mar 31, 2010. It is hard to build compression from a 402 without going to a big dome piston. The Chevy 402 big block is a Big Block Chevy (BBC) engine created in the 1970s. Jump to Latest 6. 5L 396 was introduced in the L78 option of the 1965 Chevrolet Corvette. HELP My usage was for my '71 Chevy truck with a big camper towing a boat up from sea level to a lake at 6000'. Original 402 Big Block. 5-1, stock heads, Edelbrock 2. built 454 (468) corvette motor. BBC engines are known for their size and power. mefgnkovbnfjqhwvouvooohyxsngnpmeaknayyycpueohmzgnlftvqslc