Vortec block vs tbi block. This kills two birds with one stone(I live in ca.

• Vortec block vs tbi block But they create a lot of low end torque. The TBI manifold will bolt right on. TBI Overview As you may have guessed, TBI stands for throttle-body (fuel) injection. One with 40” boggers n 3. Non vortec is the key. Find out the answer here on HotRod. 5 degrees max at WOT, most vortec heads can take around 28 degrees before detonation) also if you run out of fuel just get a tune with some 350 tbi injectors I don't understand how a TBI 454 makes you happy but a Vortec that runs circles around it comes up short? I'd just do another 454 Vortec, give it a little more cam, freer flowing exhaust, and a tune. General engine tech -- Drag Racing to Circle Track. motor mounts are the same, use your TBI sensors, INtake will have to be aftermarket, i used a jegs one, it was a very fair price. Wrapping Up. 4 Vortec big block vs 6. 3 "Vortec" does not have what came to be called Vortec heads, it has conventional center bolt heads. B. Aluminum heads and water pumps are I know this is the 4. STILL AUTOMOTIVE The TBI short-block, and the Vortec short-block are functionally interchangeable. All Vortec blocks have roller cams installed, only car blocks 100% had roller cams installed. Can anyone let me know if this combo will work?I believe this block was made in the late 60s and early 70s. Hey guys I have a 93 4. I will use the older TBI water pump along with the entire accessory-drive system, the water pump has the 3/8 bypass hole on one side. 3L as a “Vortec” engine and then marketed the LT-1-based engines (multiport 4. The aftermarket does not provide either with EGR and the Vortec bolt pattern. The vortec heads use vertical bolts on the ends of the manifold. 3 v6 block and set of heads. Jump to Latest Theres a thread here somewhere about cam swaps in a vortec big block and making some pretty good numbers . By Bobby Kimbrough April 13, 2015. I've run service body trucks the TBI 454's and the 6. But not all. We show you how to build a solid, reliable 447hp Vortec small-block for less than $3,500. _____ Other than that, fuel pump block-offs, and the whether or not all the timing cover holes are drilled, the TBI and Vortec blocks are the same. I suggest also drilling the rear of the driver's head to prevent future problems if you swap them around. All the ones I've seen from 1/2 tons were 2 bolt blocks. 3 would be nice too if you have one Sent from busted up iPhone . apples (roller vs. Finally if it still has the tiny Vortec cam it won't see 10-15 hp difference TBI head vs Vortec head. The first is a 1996 block, the bore length is stock. A 1993 4. 458 Hydraulic roller cam L98 iron heads, Thorley headers Any gen3 engine is lighter than a gen1 sbc with possibly the exception of the 99-00 6. 0 lq4 which for some reason has iron heads. They can't be adapted so you have to use a vortec manifold. 3 with vortec heads (the good ones after 96). 3. 08 gears and I got 580 kms a tank. The best block to build a motor out of is the 88 - 92 non-balance shaft ones. 4 gas, If you go 7. The "correct" intake from GM Performance would make life easier, I'm simply not spending $700 for an intake. Dec 29, 2015 #9 B. . In all fairness, camshaft comparison is not exactly apples vs. There are differences--piston-top shape, crank sensor/reluctor (and therefore the damper and timing cover), camshaft profile (roller cam vs. lift profile). The L31 roller cam is quite similar in timing to the old 300 horse cam used in the high compression 327 and the lower compression 350 both with 4bbl carb back in the late 60’s early 70’s. Edelbrock makes an inatke for those heads but it expensive and hard to find used. it has a roller cam and works great for this application. 3 LSI? A LS1/2 weighs about 445lbs (aluminum block and heads) A Vortec 4. 95 GMC 350 TBI 200/206 . I'd take one over my Vortec 350 anyday. 040 bore kieth black flat top pistons with valve reliefs stock 5. 3 tbi with 300000 miles. Reactions: DerekTheGreat. May 24, I'm using a Vortec block to replace an older TBI engine. I've heard of 40hp gains with a tune on vortec heads alone. Any reason why they wouldn't work on a Vortec big block? Aug 19, 2022 #7 ralmo94 I'm Awesome. alot of full size trucks use dual tanks and a switching valve would also be needed but i imagin you already have one of those right. For some that would be a The 5. 7 which What is the pros and cons of a tbi vs a vortec? What is easier to work on? What fails and what is the most reliable? Which gets better fuel mileage and what has more power? If you're looking at a TBI 4. 7 Vortec engines both offer impressive power and torque output. I ran a 94 tbi in an s10 w a gen 1 motor worked fine. These are factory roller blocks. 049's would be a good head but have 119cc chambers which will kill your CR unless you add domed pistons. Reply reply YortBater • If you want to run tbi on the vortec, I think you can do so by getting a new intake. My question is can I just drill and tap the block for the other 2 bolts or can I just run it without those Legacy 350 Block VS Vortec 350 Block. 060-over, HME coated bearings Speed Pro flat top pistons, stock rods and crank- balanced 9. Surprising mid curve and very good,no great,street manners. Not related to this thread's topic of 880 vortec truck blocks vs other 1pc seal blocks, If you put Vortec heads and a Vortec block in a TBI and want to keep the internal coolant bypass, you will need to drill a hole in the front of the passenger head, drill a hole in the block and run the TBI water pump. Shooting for better cold weather starting / driveability and Fuel economy. Vortec intake is I plan on pulling the van 350 and putting it into my blazer, which leaves me with a good set of heads/intake (old TBI blazer engine) and all of the TBI stuff off the van, perfect for my v8 swap in my cruiser. Source a Vortec 5. yes you will need an Not such a great idea after seeing that none of the aftermarket intakes have EGR provisions. Both were lifted, both would smoke the tires off. GM ‘010’ 2 bolt block, bored . I live in the center part of Oregon. I like the reliability of the tbi. Two timing cover bolt holes in the block won't be used because the Vortec cover doesn't have matching holes. So those won't work in a Vortec either. 030 over with the Edelbrock TBI Intake and Doug Thorley Tri-Y's. What year block tbi etc? Save Share I like the simplicity of the tbi over the vortec setup. If I were to do it again, I'd drill the heads. 2L) were also marketed as “Vortec” , so the term “Vortec” covers quite a Yes the heads will fit, in fdact even the new vortec heads will fit. Vortec has 2-3 extra sensors compared to a TBI and very few ever give issues. 7 rods trued the block deck vortec 906 heads rv hyd non roller rv cam my question is with the setup I described with rocker arm and pushrods do I use because the vortec push rods are shorter than the tbi pushrods and I'm using flat hyd lifters The Vortec engine was introduced into production in 1996. Am rebuilding the '87 block to stock specs, except roller cam and lifters (Edelbrock 22046) and not exceed lift issues of vortec heads. I originally ran it with the stock tbi chip, but had to have a custom one burned for it,as the timing tables for each As far as the intake IDK, would suspect they would bolt to the heads just fine, and would also suspect the heads to the block fine. Im thinking about reusing the small block and heads as a marine engine. This is a huge stumbling block to doing this conversion. I'm trying to decide between building a 383 with vortec heads vs swapping in a stock (relatively) 454 TBI from a donor truck. I have 781s now, would like to switch to fuel injection and possibly some better heads if the Vortecs ARE better. Front timing cover, lacko manual fuel pump. Jump to Latest I've had alot of TBIs, bunch of small blocks and 1 big block, and 1 Vortec 454. peace Hog Today we take a look at the common 638 & 880 small block Chevy engines. 0 vortec LT motor . Either and replace all the external seals before the block goes in. L-31 "vortec" truck blocks vs other 1 pc seal blocks. Joined Jun 17, 2016 Messages 368 You can get the GM Performance Parts vortec to TBI intake manifold=$$$ or just get a carb intake manifold for a vortec and use a TBI adapter=$. 0L with a ls6 cam/spring, 8. The tune alone is gonna wake that truck up in a way you can't imagine. Vortec wins easily. Chevrolet’s small-block Chevy was manufactured beginning in 1955, and You can use heads off a later vortec 454. but here is a pic of my 96-98 roller vortec block. I have seen them even in 1995s. Stick a quarter under With small blocks, a TBI enigine has a flat tappet cam and a Vortec uses a hydraulic roller. If you have a 1996-2000 vortec block, you will need a rotating assembly like this for a 355 cid rebuild. Brown of Kansas City, Missouri, asks us if late 350 Chevy TBI heads will work on a carbureted 1970s short-block. The Vortec blocks do not have the locating dowel pins installed for the old school timing cover,however,you can install a pair of pins and use a one piece gasket for a 88-95 TBI 350. No guarantees though. . I know several people who have installed a Vortec long-block into an older TBI truck retaining the TBI system and they run good. My 880 block 1 Its a long story, but basically the block is the same for the vortec and tbi engines. the block is essentially the same but the heads are different. Oct 13, 2019 #7 A. I have a tbi 350 I am building with . Vortec Heads Reader Guide. com or in the April 2013 issue of Hot A caution on the TBI pump to Vortec block is the coolant bypass passage on the right side pump horn. 431 roller camshaft was used in the "Police" TBI 5. Steve Dulcich Writer Johnny Hunkins Photographer Re: holley projection yes you will need a new fuel pump. 3 V6. You could find a cam that would have the same profile as a tbi if you have a roller block. You will have to find a TBI intake that is built to fit on the Vortec head. I think the best thing to do, is to read through forums on L31 (vortec) to tbi. Cam specs are pretty mild with a crazy (to me) 118 LSA Screenshot_20221031-214309_Chrome. Thread starter Iowan; Tbi because even though there is zero reason why, I rarely see a vortec go over 250k. The block was sent to the willamette valley for someone to drill it & the block came back not drilled. They gave you Your biggest and cost effective gains from a TBI will be a good set of vortec heads, cam and lifters, and the ultimate TBI mods. I'm not sure when GM brought on this change or if there was a time lag between engine plants when the change was made. I just bought a 1990 C1500 2wd with the 5. So the plan is to take the new motor and put the tbi intake on it. Master of the wire Wheel! Save Share Reply Quote Like. The next block is from 1998 and the bores are in fact shorter. The Vortec PM rods are stronger than TBI rods. 3L tbi, body off 91 350 TBI vs. Mar 5, 2023 #5 PlayingWithTBI 2022 Truck of the Year. Vortec block has factory roller provisions were many TBI blocks do not. well becuse i want to use the vortec cpfi vs the tbi set up on the motor now, so i figured i might beable to save a few bucks and just use the motor i have now for its short block and add the vortec heads, dist, intake,balancer,reluctor and new timing chain cover. I am fixing up a 1989 k1500 which I got for free but the motor was toast. Using the "Vortec" short-block is easy. I have a TBI block with roller cam provisions that I'm swapping Vortec heads onto, and will be retaining TBI with it. I'll install a better fuel pump, increase fuel pressure and adjust fuel and spark tables as needed. Parts are readily available for all the variations of blocks and heads. C4 Tech/Performance - LT1 vs Vortec block - Any difference? I know they're both roller blocks and the LT1 is reverse flow . Its running a '95 TB with the early big block injectors. you just need a special intake to put your TBI on. Vortec was better on fuel, as it was designed to be, its more effecient than the TBI. Don't know how the TBI will react with a vortec motor under it. In my experience with the Vortec engines, the ones installed in 3/4 tons or 1 tons were 4 bolt blocks. The motor a bought a month ago was a roller cam. Basically a TBI with remote injection right! Then you have the Marine Vortec injection with actual MPFI. Thread starter abrodeur79; Start date Aug 14, 2019; G-Body Tech Forums. 0 gas or an OBS with a 7. The TBI 454's were 230HP and 385TQ. 431. Older Small Block Chevy intake manifolds have 12 bolt holes, including TBI fuel injected engines manufactured from 1986 - 1995. It was a tbi motor with flat tappet cam. It was used throughout the TBI years. The bosses might be in the TBI block for the roller lifter retainers, but the Are the so-called Vortec, and the good ole' TBI V6's really any different? 1. User Info. I’ve had all of them, but not stick. Jun 23, 2019 #3 Stepside_fever95 I'm Awesome. I honestly prefer a TBI short block with a Vortec set of heads and a good roller cam. There was the 91-95(maybe96) CPI Vortec, which had better flowing heads and a TBI intake will bolt right up. I was looking at the weiand manifolds and a carp to tbi adapter for mine, it seems like a worthwile upgrade if you pan on keeping the small block. overall a vortec block will make more power with less money due to the heads, ported vortecs have a lot of potential. jpg 04-19-18 02:22 PM - Post# 2731588 In response to 454cid Reverse flow cooling was an 1992-1997 LT1 thing (and the 4. First up was bolting on the Racing Head Service (RHS) 180 Chevy heads (PN 12022-0). They're about $430. Also I measured the 880 block cylinder length and it measures 5. I'm ok with a gas engine and probably prefer one. I'm going to switch to carb but i don't want to do the Vortec thing. 1 injectors, CAI, and catback exhaust, outpulls his bone stock vortec 7. I do know for sure, but the blocks should be the same. I also obtained a 98 vortec 4. I found out without trying it would smoke both rear tires just stopping in the gas. 3 vortec in a blazer that we could swap in. Dual TBI's should be able to keep up with a decently built big block. 7 LS1 block on the scale, followed by an iron 5. GM was building the L31 So the patriot headers mentioned above are listed for 92-95 (TBI) big block. Both of these engines use throttle-body fuel injection, but with slightly different designs. Joined May 29, 2020 However the learn capability of a 350 TBI computer chip is sufficient to bridge a 350 LO5 , TBI to a fresh L31, 350 with a factory TBI conversion, but that’s it. yeah 87 is fine as long as the timing isn't to high on it, but i know for a fact that a stock tbi computers timing is no where near being to much for that compression ratio and 87 oct. 618 Syndicate said: L-31 "vortec" truck blocks vs other 1 pc seal blocks. with a tune on the the computer, in stock form they are good for around 350 hp or so. I just pulled my old top end off and had a couple worn valves so once the heads are redone i'll start taking the vortec apart and make sure to keep the push rods in order and give the water pumps a look and from there start getting the old block out of the truck and the vortec in and once tbi heads are done get it all together. I had a 1992 rcsb TBI 350 auto 3. The reason it won't fit is the bolt patterns are different. They are 155 lph vs stock 95 lph for TBI setup. 08 gears, I got 450 kms out of a tank. Eagle Street use that "383" cam with a mod'ed TBI and chip burn. Boost is provided by a Mistubishi TD06-17C at 550 CFM. These plugs use a . Iron LS blocks are heavy and will punish you if you try to move them around the shop by yourself. It has a TBI, and centerbolt valve covers that look My old '97 Vortec truck with exhaust and 35" tires used to shit on quite a few 5. This will be present on the TBI pump but may or not be present on the Vortec block. Intake manifold of the original engine was TBI but it was bad. :flipoff2: TBI is definatly a huge step up from I have a 99 Vortec 350 block #880. Those will allow for "bypass" from the pump back to the radiator For the block, that is the only difference I can think of. So i'm looking at possibly putting vortec heads/intake on. To use L31 Vortec heads with EGR is not simple nor cheap. I've read some posts on Camaro forums mentioning that it's apparently a somewhat common swap to put a factory LT1 camshaft into a TBI/TPI 350 engine, and they're mild enough to play fairly nicely with them for just a little more grunt. that truck ran fucking good. 357. A Swirl Port TBI block can run a factory roller with the correct parts consisting of thrust plate, spider, lifter guides, shorter push rods, lifters and cam. Trying to take advantage of vortec and TBI torque. If you click them and make a purchase, we may earn a small commission. Edit: My engine builder seen a set of huge vortec heads (huge as in big ports for a 400small block) The heads actually could of been ported out more but the builder said NOO WAAYYY! You dont want to mess with that vortec stuff! TBI and Vortec refer to various engines built by General Motors over the years. its not that i dont like the tbi motor / but i figured it would be silmpler to Looking at what it will take to go from a pre 1986 small block like a 267 to a 1988 TBI 350 engine. It's now a stout roller cam 383 with AFR heads, and he The tbi will be fine. 7:1 compression. I have been looking at a bunch of different late model SBC 350 Gen 1 blocks lately and was wondering what the difference is between them in quality like core shift, power handling, and over all strength. Will the 2114 work . Also when you swap a TBI to Vortecs you create the need to tune the PCM. 3 MPFI engines in the 4WD S-10's and S-15's "Vortec" which causes a lot of confusion AND arguments. Another thing is the throttle body has a progressive linkage on the 454. Two blocks ago I had a vortec 350 from a late 90s gm van. The truck is for a youth football organization to move around equitment and whatever else. 0:00 Intro1:10 Roller Bosses1:50 Fuel Pump2:54 Watc I've owned a 1995 K1500, L05 350 TBI since 1999. A TBI L19 454 230 hp @ 3600 385 lb/ft torque @ 1600 rpm 3/4 and 1 ton as well as 1990 454SS 80 lb/hr injectors (9-13 psi low pressure fuel system) TBI 454 255hp @ 4000rpm 405 lb/ft torque @ 2400 rpm 454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque I'm used to Vortec vs. Not sure about the big block but on the small block its the heads that makes the thing not have a lot of horsepower. You have Vortec heads, but you don't have a Vortec block. 8L, 5. 2 TBI 454s, one 454 Vortec, numerous 350s. beardeddummy I'm Awesome. T. 3 tbi and some vortec heads off a silverado. I am not REAL familiar with this. L-31 "vortec" truck blocks vs other 1 You can use Vortec heads on a TBI block but your intake manifold won't bolt up. 7 that possibly needs rings. Just grab the roller cam retainer from a TBI car and compare it to the 305's. 7. I need to know what all parts I will need to buy/change in order to do this swap correctly and I prefer to use the L-31 vortec short block in these installs. as for the dual tanks thay can be easily overcome. In the end, I installed aftermarket aluminum heads because the TBI heads were damaged. There's nothing different in the front of the block that would preclude a Vortec timing cover on a TBI block once you pull out the two timing-cover alignment dowel pins. Status Not open for further replies The early 880 blocks started TBI vs Vortec. 7 TBI and 5. TBI engines are thought to be more reliable, whereas Vortec engines produce slightly more power. belt drive set up on ( off 96 chevy truck), i had to use the reverse water pump (not lt1 pump, but the serp pump), and it only have the one big hole, not the small one at the bottom. 450-inch The standard TBI intake manifold will not fit on Vortec heads. All of the TBIs I had were OK save for my 92 Blazer, thing is a DOG. My buddy has the exact same truck only a short box and he's tried everything Summit Racing has told him to do and his HP gains are dismissal at best. With that, are these interchangeable? Looking to build a road course L98 and wondering which would be better to start. The Vortec 454 was an awesome truck. 4 make sure it’s a vortec not a tbi. 4 or 8. Reactions: Christian Steffen, DerekTheGreat and L31MaxExpress. I have L31 '880' block sitting on stand and when I compared against 90 TBI block there were very few differences worthy of mention (other than stated previously). this isn't about performance entirely, this is primarily about practicality, reliability i'm conflicted between looking for a cateye with a 6. You just need to know So far I've been seeing that the Vortec 96-00 blocks are technically Gen I blocks if you take off the Vortec top end stuff; so any Gen I sbc parts should fit. I'm considering basically this set up: My block with Vortec heads, a mild cam, carb intake, bored & ported 350 throttle body good for about 620CFM, injector spacer, salad bowl/hypercharger, IIRC you have to drill out the passage in Vortec heads to work on a TBI block (there's a bunch of threads about this) @Erik the Awful can help with this. 884x4310ci I'm Awesome. So if you knew what this engine came out of that would give you a pretty good idea. Allen4rmGromLak OBS Enthusiast. I am posting this for a friend who is wondering if he can use his older 350 block with vortec heads. Do not use standard small-block . Joined Jan 3, 2019 Messages 10,934 Reaction score 18,128 Location I have a GMPP swap intake on a vortec with the tbi set up off a 1989 chevy truck in my 1989 Nissan D21. flat tappet vs. The 880 blocks were used as OE for some TBIs and Vortecs, service replacement engines for both and crate engines along with industrial and marine applications. Either you plug the bypass hole in the block, and use the Vortec pump with Vortec accessories, and the Vortec bypass system; or you use the 88-95 TBI vs 96-99 Vortec The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board Register or Log In To remove Could a I bolt up the Vortec top end onto a TBI block and be fine? Ive got a 99 vortec 5. TBI being some substantial differences, at least RE: the V8's from 87-95 and 96-up. As for the heads and intake, those had more significant differences. Cars with TBI and roller cams used a distributor with a different sized hole in the intake manifold so that a TBI distributor couldn't be inadvertently put in one. Not a problem with Vortec heads, but TBI heads will flow coolant onto the ground. Someone said that you could only use the 2114 intake on a 96 to put vortec heads. Note: Vin Z for the syclones and typhoons uses MPFI and had a This Vortec heads Vs TBI heads comparison of features will help you learn more. Mileage isn't gonna be great on either with the big block. Also GM marketed their TBI-equipped 4. 5TD was built to compete with the TBI 454, and did very well against them. Beginning in '96 the L-29 4. [The exterior stuff, like the Harmonic Balancer, and its Size, Belt width and depth, and accessory mounting holes, etc I do Not know!!. The existing motor is getting tired and I'm looking to purchase a new Vortec long block through Pace Performance. Ive got a 92 TBI block fresh from the machine shop, To an unbiased person, Vortec vs TBI is a no brainier. 08 gears wold beat my 92 TBI in the 1/4 mile. 0 weighs about 500lbs (iron block and aluminum heads) A TBI 350 weighs about 575lbs '73 IH Scout II Vortec 6. If on both no problem, if not on the block, then the pump passage should be tapped and closed with a screw plug. - TBI is slightly easier to work on. dave brode Expert Posts: 732 Joined: Sun Sep 28, 2008 3:06 pm Location: Frostburg, MD. That being It's honestly one of the easiest and most affordable blocks to build for horsepower like ever. I have a 89 4. The the 6. They have a 100cc chamber which will maintain your compression ratio. Based on my mileage, the gas engine will cost me L-31 "vortec" truck blocks vs other 1 pc seal blocks. We could swap the TBI heads on to the vortec short block and keep using our intake that we have. What’s the difference These open whenever the injectors add pressure to the hoses and fuel block. 5TD way better on fuel mileage. 3 V8 L99 as well) only. The only issue you MAY have is, the Vortec block isn't drilled for the water pump bypass used in the TBI. the pre 87 blocks had 2 piece rear main seals and didn't have roller cams. I am pretty new to the NEW SBC engine In this case it’s significant. TBI vs vortec Thread starter preacherman; Start date Jan 5, 2014; This site may earn a commission from merchant affiliate links, including eBay, Amazon 1987 FJ60 - aluminum block 5. The stock timing cover is plastic with a crank sensor at the bottom. Had a killer TBI406 in my old truck, and the 454TBI was a monster as well. My budget and the need to say away from modern diesel issues has me looking at older trucks. This kills two birds with one stone(I live in ca. The biggest issue when bolting vortec heads onto stock TBI short block is everything else. Tbi block to vortec. We can both use the same intake and carb. 7 liter in the early 90's. New to the forum, great site. Wendell T. Joined It uses lots of oil and we need to change it again. The block had the casting provision; however, did not have the pin boss machined. Engine / Swaps / Driveability . The Vortec does make more power all the way around. Basically looking for what will be different assuming I go with a non-computer I just purchased a vortec 4. But it was a vortec motor. Send Private Topic View Profile. So I've done a bunch of research on throwing an L31 Vortec motor (96+) into a 95 OBS and bolting up the GM Performance manifold that converts the standard TBI to the Vortec heads. The resulting hydraulic lock ruined the engine and cylinder block when a connecting rod snapped and windowed the block. So now I'm back to the other 2 options- Vortec short block, TBI top end or Vortec long block and some sort of carbed intake w/ an adapter. Sent from my SM-S727VL using Tapatalk . 5. my old 79ish 350 i had in the sonoma had the hold in the block also, but when i put the serp. 3's. Joined Sep 29, 2019 Messages 50 Reaction score 14 Location Vortec SBC don't have the traditional coolant bypass, this video explains the difference and what you can easily do about it when using Vortec heads without 447 HP Vortec Small-Block Build - Budget Sledgehammer. Bottom line : Can I use the entire longblock from a '98 Vortec 350 in my '94 (with a Vortec TBI intake)? Will all TBI accessories bolt on to the '98 block? I'd like to just rebuild the '98 block & heads but if I need to prep my '94 TBI block for a roller conversion and swap the Vortec heads on it I will. I've been planning the 383 for a while now and have accumulated some parts: a 4-bolt main, '90 350 for the block, rebuilt vortec heads, GM 4-barrel vortec intake and adapter for TBI, and complete roller valve train from a vortec 350 (cam, Re: Vortec vs TBI block 02-29-04 01:56 PM - Post# 400688 In response to Trucknut As far as I know the blocks do not differ much, however there is talk the thrust retainer plate mounting was changed along the way. 428/. 0L can beat or match both motors stock. The Vortec to TBI intake looks most promising to me. I talked with him a little bit and told him what the plan was for the motor and he asked if I had thought about using a vortec block with the heads that I already have. Vortec TBI Intake at Jegs A Vortec Long Block topped with a TBI / TBI Distributor and all the original TBI stuff hooked up and you're good. 7tbi and a 5spd. I want to use a regular timing cover. It was now time to turn our short-block into a long-block. Taylor45 Discussion starter. Thread starter Iowan; Start date Mar 1, 2018; Drop a properly-build IHC 345 long-block into your truck, with feedback fuel injection on top. Also all the blocks aren't really the same. GM called the 4. Routing the Vortec bypass on a TBI truck looks funky and The D Max was in development, and the Vortec 7400 454 was cutting edge technology. The tbi engine comes in at 210 horsepower and 300 lb-ft of torque, while the vortec trumps it with 255 horsepower and 330 lb-ft of torque. Now not everything has to be over 500 in a lift to be a decent cruiser. Think I can make an adapter plate to mount TBI to square/spread bore on manifold - am thinking too, that I might incorporate a spacer as well. dave w No the Vortec is still more simple. And with the aftermarket computer offerings listed above, you could tune the shit out of it. Stick a quarter under the fuel pressure spring to increase fuel pressure. My question is can i take newer heads like that and put on my block (1986 4. My sensors were nearly all stock GM until I put the 383 in. 350 chevy small block vs 5. I plan to purchase a conversion intake manifold and retain my TBI. flat tappet, pushrods, etc)--but the block castings can be identical. No drive by wire, 1 coil vs 8, less wiring, fewer connectors, etc. The original all-Vortec assembly block would have no 3rd hole, as it is the thermostat bypass water passage not present in Vortec heads and blocks. Mine will burn less fuel and make more power. My bro quoted my burb above so I will chime in and tell you that my 6. Having proved their successful Throttle Body Injection (TBI) system during the 1987 model year for the Small Block V8 and Small Block V6 line, GM introduced TBI to the Big Block in 1988, using the same ECM and code, with only the injector and throttle-body size being increased to match. Where people get tripped up is the difference between water pumps on Great to hear. TBI Fuel Injection. These cams are assuming you install a complete Vortec block that is allreday equipped wit a roller cam or take teh TBI engine block and buy a roller cam conversion package. 3L, 6. It was pretty easy to do and just required a Vortec to TBI intake manifold or adapter, and believe blocking off the EGR. If so, yes it can be done fairly easily. It's a stock 7. Vortec heads also employ a longer thread-length spark plug. I was insistent on a mechanical fuel pump. 73s. The intake manifold bolt pattern for the Vortec engine was changed, the Vortec intake manifold has only 8 bolt holes. 3l with stock heads and carb intake)? pull the timing cover off and swap that, change distributors buy a carb intake from jegs and a carb-tbi adapter, put the TBI waterpump and accesories on it, actually the vortec accesories minus waterpump might work. you will need a new fuel pump reguardless of weather you choose the holley or the factory typw injection. 3's are the next generation GM small block that replaced the 350's. I ran one from comp cams. I popped a hole in the block in the correct location to match the water pump hole. Used a water pump gasket as a template for hole location. The 93-95 TBI is bullet proof effectively. Very nice block. He says the block is stamped with the #3970010 on it. There are 2 and 4 bolt "Vortec blocks", almost all the power gain in a Vortec vs 86-1995 block are in the heads though There is a 638 block and the 880 block. 3 block and found the iron block to weigh over 100 pounds more than its aluminum Gen III brother and 50 pounds more than an old-school SBC. vortec efi. Stick with the 350 injectors and get an adjustable fuel pressure regulator and a high flow fuel pump. I'm in the market for a used Class 6 medium duty truck for my business. TBI to Vortec Swap! Jump to Latest 23K views 4 replies 4 participants last post by Cowboytrukr Sep 22, 2021. It looks like there is a bit of modification needed as well as updating to better fuel delivery and getting a custom chip built to handle the new fuel delivery/air delivery with the stock 95 The LT-1 derived SBC’s are superior to the TBI engines in just about every way. 0L 4L65e np241 '73 IH 1210 Travelette SV392 V8, T34, TBI engines with the exception of ones used in cars have non roller cams so the gear on it is not compatible with the Vortec roller cam. The only L31 to TBI intake that includes EGR is from GM at 460 dollars, the same thing from GM but to a carb is 350 dollars. The Vortec makes more Will a tbi block that has the provisions for roller lifters work in a vortec application? I have found a tbi 350 short block that the guy at the machine shop says will work with roller I had a 97 rcsb Vortec 350 auto 3. 3, NV4500, expo build, on the back burner 1987 FJ60 - low miles but There are some differnces in a Vortec block. Mar 1, 2018 #10 8. Some TBI blocks were drilled for roller cam/lifter provision. youll need or The blocks are initially the same from what I understood the Gen1 vortec blocks. BTW - good to find you again Dave. 750-inch thread length with a tapered seat. BIG-O. 3 V6 you are talking about so what I am about to say may not be 100% relevant, but to use the TBI on a small block with Vortec heads requires the intake to be re-drilled to accept the Vortec bolt pattern and straight edged to be sure it is flat enough since there will now only be four bolts per side holding the head down, or to replace it with a special This is the casting number that I have never seen as a roller cam block. There are several different pistons fitted into them as such. Both truck were 2wd. Install engine and set the base timing to 4 degrees btdc with the est connector unplugged. However I will warn you now. Tech: GM 1st Gen Heads vs. TBI has 2 injectors (4 if big block) TPI has 8. Vortec ‘906’ heads, with ‘street port’ special, 3 angle seats + 1996 to 2000 Vortec L29 454’s will accept any old carbureted/TBI BBC intake like any other old big block, unlike the Vortec small blocks where the intake bolts were fashioned differently. 4l Vortec long block bored . 7L) as “Vortec”, but wait, it get’s better, because their LS engines (4. Hell, I have an Edelbrock carbureted intake on a 454HO with L29 heads. Overall, the TBI and Use the vortec long block, install a vortec pattern intake for a carb, use a carb to tbi adapter plate, install all of the tbi accessories and exhaust manifolds. my 96 vortec block has the hole drilled in at the bottom and works with my old long style water pump. Will this tbi block work with a roller cam? It has the 3 holes in the lifter valley drilled and tapped already. The stock plastic timing cover has 2 less bolt holes than the regular older style timing covers. The vortec requires a different intake. L-31 "vortec" truck blocks vs other 1 The L31 can run the earlier flat tappet cams with a FT timing set. 3 with no intake or fuel injection. at least mine wasn't (20. Edelbrock makes a tbi intake manifold for vortec heads if I'm not mistaken. The engine is from a car and it had TBI. Alot of the 95s had transitioned to the 880 blocks though. 414 / . Would vortec heads attach to an LT1 block? Could I just use the L98 What about the CPI vortec motors. If you put Vortec heads on a TBI block, you would also either need to drill the bypass passages in the Vortec heads or run the Vortec water pump. The Vortec heads block the water bypass even if you put them on a TBI engine block. 1 post · Joined 2018 Add to quote; Only show this user #1 · Mar 1, 2018. A got the vortec long block only from a friend and rebuilt it. I have a 96-98 roller block that I used a 90s heads/ waterpump on it with serpentine setup. I just went through the thought-process of stuffing a Vortec short-block under TBI heads. 3/6. I had a 97 rcsb Vortec 350 auto 3. Anyway i was at the junk yard the other day and saw a tbi 4. - Vortec has 45 more HP - Vortec has 30 more LB FT of Torque - Vortec has better gas mileage - Vortec has OBDII - Vortec has better heads, cams, injection - TBI has slightly cheaper parts. These Pro-Action 23-degree heads feature 64cc The "395" cam mentioned, (if I'm remembering correctly) has a lift of . We stuck a bare aluminum 5. LKN SPEEDS VORTEC 350 TBI. 12 posts • Page 1 of 1. The CPI is what I'm guessing you have found. My g-friens rcsb Vortec 4. 3's received heads with the same basic port configuration as the L-31 Vortec 350's. you need vortec specific intake manifolds, dunno about the headers. I've got a '92 fullsize C1500 here with the 4. Then there is the SMPFI Vortec which was 96+. just drill the bypass hole in the right water pump pad below the lower bolt and it is all good. The TBI’s were great. Thread starter schwinnman67; Start date Mar 7, 2021; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. I just need confirmation to make sure Gen I engine parts will bolt up correctly with the block and that when I pull the 74 L48 engine out, the 383 with this block will bolt right back up to the transmission and engine mounts. Use the vortec long block, install a vortec pattern intake for a carb, use a carb to tbi adapter plate, install all of the tbi accessories and exhaust manifolds. 3 auto 3. So, you'll need a different PCM for the Vortec whether it's the "Black Box" or upgrade to the 0411 from your 7427 I just picked up another 880 block. 305 TBI heads to vortec 350 head swap. I have a 1995 4. The trucks have been using electric pumps and FI since 1987. 7) with no motor or trans. Supporting Member. 25mph+, gearing for gearing a mildly built 6. 1989 s10 4wd 4. I have a 95' K1500 (tbi 5. A buddy used a late '90's truck block for his Camaro build. short block is a 350 vortec I'm pretty sure I have a TBI (VORTEC is not in orange), and it's in a 1994 S10 Blazer (2 WD) The block and cylinder heads are the same as the LB4 TBI, with the exception of lower-compression pistons and nodular iron main caps. The 5 Vortec blocks I have had, 1 305 and 4 350s have had all the timing cover holes drilled and the bypass drilled. Thread starter z327vortec; Start date Jul 21, 2017; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. He said we could get a block for a reasonable price, it would be a roller block and is more readily available than the early '70s blocks. All the '91-up BBC's are the Mark V style (roller cam is the main difference, so are the water passages on the heads from what I understand) The 'Vortec' heads from the '97 will work on vortec 350s have a hydraulic roller cam, old 350s are flat tappet. tbi vs. L-31 "vortec" truck blocks vs other 1 My current 95 350 TBI is wearin out and I want something to really wake the motor up. Big block vortec heads aren't different like vortec small block heads and intakes will interchange. 1L will beat any small block with a trailer. I want to retain the reliability of TBI. FWIU, if you have a T-Stat with a hole in it to bleed air, and/or your heater hose doesn't have the block off valve, you should be OK. There TBI long block VS Vortec. What do I have to do to the 400 for the TBI to work? I know I need to remove fuel pump from block and get a blockoffplate. Post: Which is more reliable 350 TBI or 350 Vortec? (Topic#183497) rkr Lurker Posts: 18 Reg: 09-09-07. Mar 7, 2021 #1 schwinnman67 Newbie. 3L vortec. 7 Long block, or just put Vortec Heads on my 350 TBI 2 bolt. Joined Dec 16, 2013 Messages 1,212 Reaction score 872 Location NC. If I'm remembering correctly the . I agree with Tacoma, the power is in the heads. 8/5. Being a TBI motor i have like 0 options for a street/strip toy. If you change your mind on carbed you can diy a Mega squirt fuel injection and can be had for cheap with a cheap tbi on an aftermarket intake with an hei The 5. I have two 880 Vortec blocks. so this 0-25mph a vortec 7. 0L/5. Like mentioned, there were vortec TBIs which were "vortec" valve covers on an otherwise normal TBI 4. Jump to Latest I always wanted to do a vortec block with a dual TBI set up. 4L in 2nd, 3rd, and 4th. Moderator: Team. So now im rebuilding this engine, cleaned and rebuild the TBI vs Vortec. 5TD's and the performance is really a wash, and the 6. I 454 tbi vs Vortec. 99 Grand, That even goes for some of the older, pre-Vortec truck blocks from TBI era. There were also variations in heads, including the later TBI heads and Vortec heads that require a different intake manifold. If the TBI block isn't provisioned for the roller cam, it isn't worth trying to convert it, it's a pretty PIA job. 3L/5. Joined Feb 14, 2022 Messages 371 Reaction score 471 Location Mo. Tell ya what - you build a 350 out of an old block with old OEM heads and I'll build one with TBI or Vortec heads - no porting on any of them, old or newer - and you use a flat tappet cam, I'll use a roller with the same advertised duration. Yes, ever car after 87' had a roller cam, trucks didn't get them until 96 with the vortec stuff and all post 87 blocks have all the machining and holes just not tapped, at some point the 454 tbi vs Vortec. 3, then don't worry about if it's a Vortec or not as there's no difference in performance. So apparently there is an option to put the 96 engine into the 95 truck and convert the intake to TBI which unless he runs into the GM G30 van from 1996 with a 350/5. I ended up putting in a fresh Vortec 350 in it. You'll need roller cam and lifters. 1301 posts · Are Vortec 454 heads better than the older 454 heads? Or is that just true for the small blocks? I am thinking that I heard the Vortec 454 heads aren't any better but I cant remember for sure.