Gt40p heads with ho cam. Cuz im on a crazy slim.

Gt40p heads with ho cam 84/1. i just want a mild cam nothing to big and what springs will i need for this cam. Maybe with the Ftech and better intake, you might have better result then me. 6 pedestals rockers, 3. Found a set of GT40 and 40p heads in a local junk yard, which one would be better then the stock heads. 7 pedestal rockers and a special cam close to an HO cam and 24 lb injectors. the plug sticks out almost 90* The stock springs that come installed on GT40P heads (remember, GT40P's come from factory Explorers/Mountaineers, they cannot be bought new) are awful. Jump to Latest Stock 95 351 short block, 86 HO cam, P-heads, 1. 8/351W) - 302 rebuild, GT40P heads - I have a 1990 F150. 0 Mustang Tech; Replies 11 Views 1K. a91what Alexsparts. Stock HO cam & GT40P head question. 0 with an HO cam and bolt ons into my sister 89 GT. Things that could affect pushrod length On a budget as slim as you're makling yours out to be, the stock cam supports enough power to see the block turn into two inline 4 cylinders rather than a single V8. 6:1 ratio. Has them frilled for 351W head bolts as well. Your 302 heads will bolt up but the bolt holes will have to be drilled from the 7/16" they are now to 1/2". 85/1. Would like to know how you make out. gt40p's exploder intake both thru a t-5 heres the complete list/comparison for anyone else who cares car 1 B cam: stock 302 bottom end GT40P heads Explorer intake 70mm TB 73mm MAF stock airbox 19lb injectors stock fuel pump B303 cam 1. 8/351W) - mustang HO cam with GT40P heads - As the title states, I am getting ready to put a stock mustang 5. ) people use with GT40 heads/intake. May pull low end down slightly due to more air sooner. 74/1. 73 gears and also to attempt tp port the heads. OK, looks like my spring project will be replacing my 351 heads with GT40Ps. 0 with GT40p heads and I am trying to decide if I should keep the stock Explorer Cam or upgrade to Trick Flow State 1 Cam which would also require new I know the stock GT40p springs are dicey even with his stock HO cam. Register. 7 rockers,rpm intake,holley 670 carb,msd 6al,msd distributor,ect. Stock springs and valves, Ford E cam, with FMS 1. 61 @ 125. 050 duration is only 207/213. 282") than the stock HO cam (. 6 as well, so it wouldn't change anything with your lift. I am considering buying it and changing the cam out to a comp. How big a cam can you use with the gt40p heads, I've been told you can't run much of a cam, and which roller rockers, or would it be better to just upgrade the heads 11 GT 5. 7's run into valve spring binding on a stock GT40P head ? Using the above numbers, The HO cam with 1. 6 roller rockers on the pedestals. so other then that the GT40P Heads was made same way as the 351 Cleaveland Heads just more modified and better results then the regular GT40 Heads the regular GT40 heads was used on the GT 350 mustangs but so they needed to make a mustang that can beat the GT350 was when they come up with the new Cobra 5. 7's should have slightly less max valve lift than the Explorer exhaust with 1. Just my opinion off what I have read. 1. i would buy the gt40p's, 24# injectors, a 65mm TB, roller rockers, an AFM cam and matching valve springs, good gaskets, studs, tmoss pulls 280 rwhp/330 rwtorque out of a stock bottom end, GT40P headed 302 with the STOCK HO cam (efi). The locks that cam with the spring kit did not put the exhaust valve springs low enough, or there installed height was to high. 7 rockers will work fantastic with a GT40 combo. 73s with MT DR and weld drag lites. 8 posts · Joined 2005 Add to quote; Only show this user #1 · Dec 21, 2006. I want to use gt40p heads (Dont laugh, Im on a bugget) whats the biggest cam I can use with the heads? BBK Cold Air, BBK SSi Upper and Lower, 70mm TB, GTP Ported Heads, E-303 Cam, BBK Shorty Headers, BBK H-Pipe, Steeda Tri-ax, lakewood drag struts 90/10 up front, 50/50 in Okay so I’ve got a question for all you machinists and engine experts out there. Now my block is at the machine shop. Ford Racing 5. I'm thinking on using the e303, 24lbs inject, massair 70mm, 1. Sep 1, 2013 #2 Sep 1, 2013 #2 lift?. The net effect of the roller rockers by dyno tests was somewhere right around 10 hp. THANKS All of these would work very well with GT40p heads and 1. By all means just throw that whole GT40P in! I'm running one in my 66. 7 RR TFS One benefit gt40P head will have over other 80's-90's model heads, including the gt40 head, is that it has a smaller combustion chamber much like the original 289 heads. I agree. com has a variety of valve spring kits for gt40p heads. 90 gears, lakewood 70/30 shocks & struts, SVT control arms, The stock 5. Depends on the budget. Save Share GT40 heads-any small block ford header will fit. 7E RR, 1-5/8 shorty headers, Lightning lower, Explorer upper, 65mm T/B, 80mm air-meter, UD pulleys, E-fan, Small Block V8 (221, 260, 289, 5. If the block Small Block V8 (221, 260, 289, 5. You'll also loose compression with the larger chambers Engine Prw rockers, trick flow cam, gt40 heads 67fox; Apr 15, 2024; Fox 5. Are you changing the cam from stock? The GT40 and GT40P heads have valve spring that will only support the stock can for the application they came on. Apr 20, 2010 #1 Apr 20, 2010 #1 A The stock Cobra cam has more peak lift (. But they far outflow anything else you'll get from Ford unless you get a professional to port them. world windsor jr heads,steeda 18 cam,1. Power will be around 300 +/-. Stock TRW forgies, stock speed density cam, I went from the stock E7's to The stock Cobra cam has more peak lift (. I wanted to go with better heads but several weeks later I was burning oil like crazy. 46 valves where gt40p have 1. 0/302, 5. Sep 1, 2013 #2 Sep 1, 2013 #2 lift? So ive decided what im going to do. Stage 1 is the magic cam for P heads. what is a good cam to match the gt40p heads. 0LHO with the GT40P heads on it. The block, etc cam from a 1990 5. fresh '88 HO bottom end - reversed pistons, Comp XE274H flat tappet, ported GT40P's, ported Xcelerator intake Small Block V8 (221, 260, 289, 5. 278") -- so the stock GT40 springs should be fine with the stock HO cam. 0 H. Full roller rockers with 1. Stick i'm not sure if your summit headers will work. I thinking that ford would improve the letter cams to keep up with competitions (any takers). cam in an explorer 5. For most gt40p heads, intake flow maxes out at . I have no idea what cam is in it and do not look forward to removing the serpentine setup to find out though this is inevitable. GT40P heads may look similar to E7TE's but they flow 30% more air. I have the gt40p heads with a TFS 1 cam. Now if you're expecting the heads to flow as well as the Edelbrock, AFR, twisted wedge, etc then you're dreaming. Especially if there's been any internal engine work: valve job, new cam, etc. Get a stock ho mustang cam if anything, I bought an 88 5. cam has a little better grind when combined with the 1. Anyone know what works well with GT40P heads? Here is my set up. I have an 85 GT with a posi 7. I have read that the stock explorer valve springs are weak, so I Hello, I am in the process of bolting on a nice pair of GT40P heads on my 1987 Mustang GT with the matching upper/lower GT40 intake. GT40P,1. That's not much cam for a 351. So, we need to figure out I recently got a real nice 93 coupe 5. 10 gears. 7 RRs, shorty's and SS exh, T-5, KC clutch, Hurst pro billet, line loc, 8. ? Jump to Latest 9K views 12 replies 5 participants last post by 2slow93gt Feb 24, 2009. 270HR. The Cobra cam was developed to restore some of the bottom end torque lost when the bigger heads/intake were put on the motor. -1994 Mustang GT "The Red Baron": 3. 72 roller rockers power steering longtubes h pipe flowmasters thru the tails electric fan no smog or a/c car 2 TFS1 cam: stock 302 bottom end GT40P heads Explorer intake 70mm TB 76mm MAF cold air intake 24lb 89 Ford HO Discussion starter. 7 RR's will put lift at 4. I am in an emission strict Indulge me, please. 10 gears, SR Perf Upper and Lower control arms, SR Perf Full Length Subframes, Ford Racing "B" Springs, Eibach Pro 1990 GT 5. 500 lift. 73 gears, MSD ignition, under drive pullies, ET Street slicks. 444" and 210° at . Just an FYI :bigthumbsup Choosing a cam is all about doing your research to make sure you get the right specs to match all the other components. This was through a T5 with stock 60MM TB, stock MAF, no underdrives, stock fan, etc. 0L 302 V-8 with nitrous makes 500 horsepower. 92 @ 123mph with a 1. 7 ratio cobra rockers giving you The B303 cam uses the same base circle as a stock roller cam so the geometry doesn't get upset in an otherwise untouched engine. 500 lift springs, i can't remember. 10 gears with posi, shortie headers, Gt40P heads, Paxton NOVI 1000 at 8. So whats the best to use that goes with gt40p's and is cheap. 84 GT - fresh '88 HO bottom end - reversed pistons, Comp XE274H flat tappet, ported GT40P's, ported Xcelerator intake, 650dp, ported FRPP shorties, 2. The test vehicle was a '67 Ranchero with a 351W. Search GT40p heads with stock HO cam. I had the springs upgraded (due to a cm swap), new valve steam seals and valves lapped. 73 limited slip rear (bought) just get gt40p heads and I see that alot of guys are against the e303cam saying it's outdated. I have read that the stock explorer valve springs are weak, so I am going to try and assemble the heads with the springs The cam they use is a bit more radical than what I suggested. injectors, 4. ) Sorry to bring back an old thread. Beehive valve spring kit for sbf heads with stock 5. . H. E303 CAM, COBRA INTAKE, 155 FUEL PUMP, BIGGER MASS AIR, THROTTLE BDY( THE LAST 2 DONT KNOW WHAT IM GOING WITH YET. Not really looking for huge hp, just want better breathing engine. 72 roller rockers power steering longtubes h pipe flowmasters thru the tails electric fan no smog or a/c car 2 E cam has . hollywoodstang8. However, since The GT40P's are the way to go, similar to what the Chevy guys see with Vortecs, the GT40P will add 20 to 40 horses depending on the cam, more aggressive cams take better advantage of these heads. The E303 cam can present problems such as Idle surge and low vacuum on some cars but it is an excellent performer. Grab some gears if funds allow. I figured the springs must be new. 10s, suspension mods. 7rr, 65mm TB, 70mm mass air, CAI, bbk shorties, bbk o/r h-pipe, flowmasters, full length subframe connector, UPR Tubular k member, control arms, coil overs, ect. 498 and the 1. Going from memory, the stock HO cam has . I recently purchased a set of GT40 heads and a victor jr. Some porting. Yep, the GT40 heads will bolt right on and the stock cam will support them just fine, but you will eventually want an aftermarket cam. 8/3. GT40 heads were used on two different trucks and as mentioned they all had 1/2" bolt holes so you need to adapt to the 7/16" on 289/302's. 6 rockers. if your heads are cast iron, they're probably just stock e7's. 73 gears. 030, Harland sharp 1. However there are plenty of factory heads that with the help of an experienced machine shop can be great. 6I & 1. 0 HO motor. The P heads were optimized for the . 90 HO with 700DP, Edelbrock RPM intake, 1. 7 crane pedestal rr,port matched the heads,weind stealth intake port matched,650 demon double pumper,tfs 1 cam, msd box,ford headers, bassani x pipe,flowmaster, cat back,aluminum driveshaft,aluminum flywheel,4. 428/. Or, if your on a budget, look for a stock 5. 10 gears,1 inch ported For a good conversation on iron v aluminium heads find the Engine Masters episode that compares similar iron (gt40p) to aluminium heads, It has been said a hundred times you have to have a plan. 050" for both intake and exhaust with a 114° LSA. cam with cobra roller rockers is a great combo with GT40 heads. 10 gear, UPR Pro Series suspension Kit, Moser 33 spline spool, axles, and c GT40p heads on a 351W set ups please. The stock HO cam works good, not as much power up top but keeps the torque up down low. Join 5. 46 valves Just remember, if you upgrade the cam you need to 1990 GT 5. Save Share Reply Quote Like. I have a GT40P motor in my 66 with a Mustang 5. After that, you have to You are the first person that I found on the web who is actually using stock valve springs with GT40P heads with more aggressive cam! I actually have a 5. That's it. 0 HO and I am going to install GT40P heads and intake (1997 Mountaineer). 0 HO as 220 at . I will be rebuilding it. and I've only running a HO stock roller cam with my p heads. 89lx, Novi 1000, Gt40p heads/intake, Edge GT40P heads with . I’m rebuilding my 289 and I talked with my machine shop guy and I ended up getting a comp cam 35-234-3. I am currently working on the driveline. The stock cam isn't to bad but the Mustang 5. SpeedPro pistons and rings, stock crank, GT40P heads, Crane 1. 1 n/a Do a leak down and compression test. 050 duration than that without hurting the street operation. 6 roller rockers. Gearbanger 101 Straight Outta Locash. this is covered weekly on the board so a quick search should pull up alot of good info for you. In 1982 Mustang GT: 409W, Neil Erickson ported AFR 185s, custom Comp solid roller cam, Dynamic Mighty Mite M2 C4 with Continental 8" convertor, yada yada yada 10. 7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 0 HO firing order and 351W firing order are the same, but not sure about the Explorer. 00 @105mph, the A set of gt40P heads gone through with a decent cam is a great budget street engine. I have a Kenne Bel waiting to go on. 10 rearend Oh and a Mallory Comp 9000 unilite distributer and Mallory HYFIRE DIGITAL 6 ignition and Mac 351 swap 1 3/4 car 1 B cam: stock 302 bottom end GT40P heads Explorer intake 70mm TB 73mm MAF stock airbox 19lb injectors stock fuel pump B303 cam 1. Long tube headers are a terrific idea, but you need to open up the exhaust side. X303s work well also but a split pattern seems to work even better with these heads. 7 rockers on the heads. 6 ROLLERS. 448 My cam is a . 6 rockers, so if I'm not sure that makes a difference in fitting a header on the GT40P heads. 8 gears and a WR Toploader. 6 roller rockers, TFS stage 1 cam, TFS Trackheat intake, FRPP headers, BBK o/r x pipe, Magnaflow catback, 70mm Accufab TB, 76mm C&L, Taurus fan, 4. Hey guys. Also in case its important I'm running the Trick Flow 0001 cam. The best advice I got was get a cam that favors the exhaust as that's where these heads lack. purchasing cheap chinese made parts teaches us a lesson on the importantance of doing it right the first timeie the valve train The GT40p heads can have spark plug interference with your headers because the plugs are at a different angle. oh yah stock e7te ford heads have a 1. This is a package kit from Alex springs this is a 150lbs on seat setup for stock cam and As I recall they did a test with the "B" cam and "Y" heads. You can go a lot longer . 8 The regular GT40s flow almost identically, and the larger valves actually flow a bit better than the P at low-lifts and higher than stock lifts, especially over . GT-40 iron heads, B cam, GT-40 intake, 24lb inject, 155 pump, 65mm TB, 75mm Pro-m, BBK fenderwell, MAC 1 5/8 unequal, BBK cat h-pipe, MAC muffs, pullies, 31x19 Griffin, 3:55, B Car is a 1986 mustang gt. with a C&L so they would work. My father tossed an explorer 5. 8, go with one that had 4. 0 HO cam (85'-88' if possible aka E5ZE cam) and install a set of 1. Only show this user #1 · Jan 28, 2010. Holley 570, and a Mallory Maxfire distributor. 7 rockers at 1987 Notchback - N/A stock 302, TFS heads, Holley Systemax, FTI cam, Astro A5 Best so far: 10. I put down like 230-ish and 285-ish rwhp with 30+% comp. The GT40 springs will be just fine as long as they are not worn. If you just look at them side by side it's quite evident. It is a 5 speed, has the GT40P heads (soon to go on), Edelbrock Performer RPM intake, and K&N cleaner. Aug 13, 2005 53 0 0 PA. 0 with 1. I have the crane cams cobra 1. GT40 vs GT40P. I will be using a set of Alex's springs, stock rockers and lifters, and an E303 cam. Aug 10, 2002 9,457 1,379 234 Ontario, Canada. im not sure what springs/spring rates to use on my gt40p heads with a hydraulic flat tappet cam. I found a 302HO with gt40p heads on it already rebuilt out of a 97 explorer. I was wondering if anyone else has done this and if so what Cam, headers, intake, carburetor combination is good for this setup. GT40p heads Here's what I'm thinking for the finished product: Bottom end: ARP fastners, hyper flat top pistons, high volume oil pump, double roller timing chain, otherwise stock. With a decent cam, intake and carb you're going to Also, wouldn't a HO with 1. Anyway the GT40P heads are supposed to be the best production heads Ford has ever offered for the 302. 450 or . i would buy the gt40p's, 24# injectors, a 65mm TB, roller rockers, Not the ideal cam at all. 7's. Also gonna throw some juice on it later. 54 lift). 7 rr. Trying to keep it affordable, yet make it durable. 6 steel roller rockers with stud conversion, Crank pulley,Typhoon intake un touched ,70mm TB, 73 C&L for 19 pounders,Electric fan,5 speed with 3. 0 HO short block with Gt40p heads. PTV clearance is about duration, not lift. 2 valves out of box Induction:Edelbrock performer RPM with Speed Demon 750 CFM ignition:MSD 1990 GT 5. either way, i'd swap them out with a better set because you'll be running them to their max. 0 HO Motor(Crate)/B303 cam/1. 6 ratio (atleast I cant) The pushrods you gota wait on till you know if your gona get the heads decked or not i think, I my self am still trying to figure out if . I have a set of gt40p heads and I am wondering if I should use 1. The PO blew a head gasket and let it sit for 15 years. but that figure was made with aluminum heads. 8/351W) - 5. I was originally going to use the iron heads and port them and stuff but I ended up going with used gt40p heads. N/A stock 302, TFS heads, Holley Systemax, FTI cam, Astro A5 Best so far: 10. Scince it is my first car and im 16 i dont want anything real crazy. :bigthumbsup . I want to use gt40p heads (Dont laugh, Im on a bugget) whats the biggest cam I can use BBK Cold Air, BBK SSi Upper and Lower, 70mm TB, GTP Ported Heads, E-303 Cam, BBK Shorty Headers, BBK H-Pipe, Steeda Tri-ax, lakewood drag struts 90/10 up front, 50/50 in the back I'm building a 306 with GT40 heads and intake. This is an older thread, you may not receive a response, and could be reviving an old thread I have a nice standard bore 1968 Ford 302 that I just acquired. Good driveability manners. FWIW I'm running a st1 cam with 1. 5 rearend with 4. 458 posts · Joined 2008 Add to quote; Only show this user #1 · Feb 23, 2009 (Edited Stock HO 302 + . Use a new 5. My car hasn't gad many upgrades but a explorer manifold is going on too. Will this setup put out around 300-325 rwhp; a full aftermarket exhaust, GT40 Iron heads, a GT40 upper, lower intake with a k and n filter and a 70mm maf for 19#'s and the stock 5. X303 cam (. 030" shorter) pushrods + 1. I upgraded to a larger '94 MAF and 65 mm throttle body at the same time and had Hey I am thinking of getting an E303 Cam for my Explorer engine, gt40p heads because the engine is out and it would be easiest to get it done now. - '00 GT convertible. The GT40 and GT40P heads are a good choice. What kind of HP should I expect to get out of this motor with that cam? 1991 Mustang LX 5. Factor back in the 15% or so loss through the drivetrain and you're looking at about 260 at the flywheel. Is it worth the money to install forged pistons? Is there anywhere cheaper to buy rebuild kits than Summit? I honestly think you could get a 12. So money for good valve springs and decent cam would be ideal. I am going back with a cam from the mid 80's non-HO Thunderbird, rollers, and GT40P heads. I'd do some something to improve head flow in addition to a cam. The . and The locks that cam with the spring kit did not put the exhaust valve springs low enough, or there installed height was to high. Cuz im on a crazy slim Has anyone had any experience with the 351w /GT40P heads setup? Im in the process of removing the original factory heads now. Did the 1970's Ford 302's have valve relief pistons. 30 over, with 270 Comp Cam with 500 lift, Edelbrock RPM Intake, and Edelbrock 600 Carb. 8. ARP head bolts are on the menu too. The Crower and Steeda will work with a 1. Can we save some money buy Log in. it likes to rev and people have gone pretty damn fast on it. Just hogging them is not overall productive, and while it will improve flow at certain RPM, it will hurt others. Thread starter 90LX5spd; Start date Apr 20, 2010; 9. a lot of guys with gt40-gt40p combos run the ford f303 cam. Roller rockers (maybe). We're going to a new Flowtech cam, new beehive valve springs, and Scorpion pedestal mount roller rockers. 02silverstang Discussion starter. 72 rockers, ProM 80, 42 lb. And exhaust at about . 55 valves and 1. 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108. I want to change the stock cam & heads on my 4WD 94 F-150 302 to a stock HO cam and new GT40P iron I have a '72 Bronco (uncut) with an '88 5. My motor w/ E cam, GT40P heads, cobra intake, FMS shorties, 2-cat H pipe and dynomax catback, dyno'd 221 RWHP. 9 with ported stock heads pretty easily. 49 60ft. 0 HO. Be aware that the E cam was intended to be used with 1. F. It's a far more effective cam in the GT40P then the old Mustang 5. 72 rockers. 56 gears BUT I went 13. E cam has . 7 rockers. My set came off a 2001 Mountaineer. 512 max lift and I'm running the . No issues. Runs good for a budget build, with plenty of low end torque. 413 posts Cylinder Heads:Ford Explorer GT40P heads with 1. 6 Harland Sharp Roller Rockers, Accufab 75mm TB, BBK 75mm MAF, BBK CAI, 24# injectors, F303, MAC shorty headers, BBK off road H pipe, Flowmaster 40 series, Ford 4. O. gt40 heads (bought) AOD (found at local yard and isn't going anywhere soon) (waiting because of warranty use) edelbrock 1406 aka 650cfm electric choke, 4 bbl carb (running when last used for $100) Ford hydraulic roller cam . 55 gears. 55s, FMS springs, Megabite control arms. purchasing cheap chinese made parts teaches us a lesson on the importantance of doing it right the first timeie the valve train 90 Mazda RX7 with 2000 5. 0 block (rebuilt w forged pistons, fresh GT40P heads/intake, 70mm Mass Air Meter, BBK cold air intake, 70mm throttle body, long tube headers, and A9M computer). GT40P heads use pedestal rockers, not stud mount. 73, 15" Team III, firewall mod, trunk mod, trailer hitch, drivers foot box mod, With factory stock gt40 heads off a 95 cobra, TFS1 cam, ported stock lower, pullies, 14*, and 24lb inj. Right now it has factory untouched heads on it with an Edelbrock performer cam. lap the seats, keep the springs and rockers if you stay with an HO cam, good to go. 006" to compare duration. I have a brand new 98 Explorer 5. The Explorer has more lift on the exhaust and an LSA of 116. 7 Roller rockers, B303 Cam, Recurved stock distrib. 0 with 6 speed manual, steeda 20" ultralites, 3. 75 accu fab th body that i have GT40p heads Here's what I'm thinking for the finished product: Bottom end: ARP fastners, hyper flat top pistons, high volume oil pump, double roller timing chain, otherwise stock. It made guy on corral running 11. 0 cam, 1. 7 roller rockers. 498 lift. I used the Mustang HO cam and am very happy with the torque and great street manners. Its a non-roller block, 93 I think. If I were choosing a cam for a car with GT-40 heads I would probably go with the B-303 cam or just leave the stock cam in there with 1. Hard to argue Okay so I’ve got a question for all you machinists and engine experts out there. Small Block V8 (221, 260, 289, 5. It's going to let the cam work much better. I think I still have the boxif so I will post the part # tomorrow. 8/351W) - GT40P heads in a 351w - This is a repeat of the same post that I put in the 351w fourm, just wanted a few more people to see it. Smooth idle, very broad power band that pulls to 6K very quickly. Iron 40 heads are pedestal mounted, you cant find a decent rocker for these heads under $300 in a 1. Mar 31, 2005 658 2 0. They installed a roller cam kit and fuel injection. 00), put in new cam bearings, clean out your old roller lifter pistons, good to go. I also understand you're on a budget. 8, 4. The stock HO cam with 1. Those should all work and allow the speed density to still perform. Stock cam. Deck for around 10:1 compression. I was looking to get about 300-325 to the wheels. If you're digging around the boneyard for an 8. 0 Convertible. I will get a set of hardened pushrods once I get it measured and a hardened pump shaft. The intake ports are wider and much nicer, intake valves are larger, exhaust ports don't have air injection humps, the bowl transition & short side radius is far better. factory stamped rockers are 1. Oh it's also very fast just get gt40p heads and I see that alot of guys are against the e303cam saying it's outdated. If you have stock heads, the valve train is probably not adjustable. blah, blah,blah. 0 HO lower will not match up with gt40 explorer upper, so you will need matching lower with it. , Holley 650 4150 carb, Edelbrock performer RPM intake, Longtube MAC h im not sure what springs/spring rates to use on my gt40p heads with a hydraulic flat tappet cam. 10s, shift kit, MM LCAs and a TFS nitrous kit jetted for 100 2003 Azure Blue Mach 1 1965 Mustang Convertible 1965 Mustang Fastback The "p" heads are better than the non p heads, if you are going the budget route then id go with the gt40p heads, they will probly be about 100$ more than plan gt40s and will out perform the gt40 heads enough to make it worth the 100$, the reason only some headers will work is because of the angle of the spark plug. 20+ Year Stangneter . 90LX5spd New Member. 0 ho roller cam. fresh '88 HO bottom end - reversed pistons, Comp XE274H flat tappet, ported GT40P's, ported Xcelerator intake, 650dp, ported FRPP shorties, 2. Save Share Like. 5. Exh-hi 130's at 5,000 and low 140's at 6,000 stock per Allfordmustangs research flow data/charts. trophytaker Discussion starter. It made The stock Explorer cam is max lift of . 540 kit for GT40P heads. Reactions: General karthief. Oct C9OZ-6250-C hydraulic version of the 289HP cam Stock iron heads port-matched to the exhaust Port-Matching As for GT40P heads, I've read about doing the swap before and done some searching for used ones in my area, but haven't come up with much. 442 of lift on exhaust and intake, and an LSA of about 114 or 115. 498 and 282 duration (wants $100 used) 3. I have done a lot of research with the GT40P heads as at one point I was going that direction and agree with Ed. best cam for stock bottom and gt40p heads. When looking for OEM 5. Using a stockish cam with an average . 0 Explorer with ported GT40P heads milled . 92 @ 123mph I use the gt40p heads and they have worked well. 050 on a 112* LSA with a 108 ICL. 73 w/a 96 explorer motor ported gt40 heads, E-CAM,tfs-street intake,bbk-everything. 20 decked heads need different length pushrods or not. Upgraded Lunati camshaft and GT40 cylinder heads on Ford Explorer Mustang 5. They may not even hold up to a 5. Top end: Gt40p heads, port matched. 5 PSI, 42 Lbs/Hr injectors, M T Also, the "P" head valve springs are designed for the low-revving "P" cam and are not suitable for even a stock "HO" cam. Your not going to see much of a power difference with any of the typical off-the-shelf cams (TFS#1, letter cams, etc. My question is: Would the GT40P Stock H. 7 rockers as mentioned above. Intake is Edelbrock performer 289, then move to porting or better heads. 94/1. The P heads are 1 step better than the E7 heads, but they're still a truck head and Mike - '88 LX. all the cam guys are gunna chime in and Definitely not GT40P heads. The specs on the 5. 0 simply do to the superior GT40P heads. 540" Lift (ADD HARDENED VALVE SHIM KIT: No, ADD VITON VALVE SEALS: No) VSK7G49-M If I go back to the Stock Explorer cam, I'm running the springs I have now. The rocker arms are probably pedestal mounted. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. LILCBRA Yeah, the GT40P heads are a clear winner over stock C5 heads, except (stock) 5cc larger chambers. 0 cam. 73 trak lock rear. 0 HO with Gt40 heads flat top Pistons and an E303 cam in it to put in my truck but I had to put stock manifolds back on it and my stock EFI set up but with the Cam I can't hardly get it to do into gear with out it dying (automatic) it's mainly reverse that kills it but sometimes drive will also what could a person do to fix I am refurbishing (new rings and bearings) a 1998 Explorer 5. I am looking to see if I can match the Ford performance e303 cam to gt40p heads with crane cam 1. cylinder heads, there are three performance options beyond the basic E7 heads: The Cobra/Lightning GT40s (P/N: F3ZE or F4ZE) which came on 1993-1995 Cobras and Lightnings; the Explorer GT40s (P/N: F1ZE-AA) which came on 1996 to mid-1997 Ford Explorers and Mercury Mountaineers; and the GT40P what kind of headers would i need t o have the GT40P work with a 351W in a 95. 0 Mustang Tech Wednesday at 6:12 AM. This guy is running a custom cam on a 100K JY motor that the heads have never been off. CAI, BBK 70mm TB, ported GT40P intake, GT40P heads, B cam, BBK equal headers, OR Hpipe, SLP LM1 mufflers, SCT chip, UD pulleys, 3. 8950HO New Member. I dont fell much power gain over my stock stuff, especially the most recent post - extremely streetable Stang with Stock HO cam (24 mpg on the road!) that runs mid 12's on slicks, 270rwhp, 315 rwtorque). Jump to Latest 3K views 4 replies 4 participants last post by norcalcougar Dec 28, 2006. May want to double check the firing order of the Explorer cam. I will be replacing the 302 with a 5. Valve Spring Kit GT40P, Low & Mid Lift Cams, High Output Drop in up to . 7 as well. The B cam is a decent option. I'll have to get the HO cam specs at . I will be running the HIPO manifolds, weiand alum, intake, electronic ignition, a holley 650, and a 4 speed with 3. GeorgiaLX. I'm pretty happy at how well it works, even with 2. 8/351W) - E303 Cam with gt40p heads and 1. put down 252-302TQ on a dyno jet with all kinds of issuescheaper is seldom better epecially after your tach passes the 6200 mark. It had a Edelbrock performer intake and 750CFM holley. Stock 302, GT40P(unported), Crane Powermax 2040, Crane 44308-1 springs, Cobra Intake, BBK 1 5/8" LT, 70 mm TB, pulleys, black magic fan, MSD 90 degree spark plug wires, MSD coil, walbro 255 LPH fuel pump, Kirban Adjustable FPR, svo 1. 6 alum roller rockers,beehive springs,gt40 upper and lower intake,24lb injectors, c@l mass air for 24lbs,308 block,10to1 compression,5 speed,373 in rear,mac shorty headers,with prochamber gt40p heads GT40P heads - intake will flow hi 190's at 5,000 and drop to low 190's at 6,000. 56 gears Stock 85 block,gt40p heads,2031 cam w/1. 0 T5 3. T. My leaky memory also recalls the duration of the 5. If not, will these heads still work on this engine. 8's with a STOCK HO cam and p heads. Baseline numbers with P heads showed peak HP:249, peak TQ:308. 533/. A mild cleanup of the ports on the GT40P's, plus a decent cam (not the E cam, something dual pattern like the TFS1), and the GT40 based intake could get you in the 275 RWHP range and mid 12's with no problem. Here's what I'm running; Ported GT40p heads, TFS stage 1 cam, TFS Street Heat intake, Mac LT headers, O/R X-pipe, 3. 73 gear,off road X pipe, magnaflow cat back, steeda CAI, Boss intake, SCT tuner with steeda tune, fully adjustable rear suspention, LCA,UCA and After that, you have to have the heads machined to step up to dual coil springs. Ford sold these in the racing catalog starting in 91 and they list one head gasket for 289/302 and the only mention of a problem is the 86 engine with no valve reliefs. the results were around 325HP. It has the stock explorer cam in it and am interested in upgrading the cam to most likely a trick flow stage 1 cam. 0 cam works very, very well in this motor. 5 exhuast w/ turndowns, T5 w/ the death whine, 4. The valve list is 0. 030" Milled GT40 heads + 6. I WAS planning on going with this, along with the factory EFI setup in my 65, since it will be a driver. 73, 15" Team III, firewall mod, trunk mod, trailer hitch, drivers foot box mod, front tow rings. 6 or 1. 7 Crane roller rockers = success Just a review, I have an 88' 5. purchasing cheap chinese made parts teaches us a lesson on the importantance of doing it right the first timeie the valve train First off the name GT-40 is general and doesn't represent any one head. E7 vs. 0 The GT40 heads are way better than the HO heads. 6 roller rockers,AFM N-41 cam,AED HO Holley 650DP and Purestreet ported and extrude honed Weiand stealth intake c4(need c4 part's) tranny and 4. The ford cams are not bad but older tech. if you just pulled the heads from an explorer, they have either . If you drop $400 on a pair of GT40P heads, and then spend $300 having new springs put in, valve job, guides, surfaced, and then have to buy some new headers for another I want to do heads cam intake in the in the near future. Generally, if upgrading the cam, the non-Ps are preferred. I am in the process of finding GT40P Heads, but I'm not sure if I have flat top pistons with valve reliefs. Fox 5. 10's over As the title states, I am getting ready to put a stock mustang 5. The GT40 heads are better than E7's but not buy a whole bunch. The cam combination I listed works great on a 302 and is plenty radical for a street engine, but still remain streetable. The "p" heads are better than the non p heads, if you are going the budget route then id go with the gt40p heads, they will probly be about 100$ more than plan gt40s and will out perform the gt40 heads enough to make it worth the 100$, the reason only some headers will work is because of the angle of the spark plug. Stock bottom end 302, TFS170s, Ported Cobra intake, FTI cam, 5-spd, Max Motorsports suspension, M2300K brakes, etc etc. The GT40 heads are low-mid RPM heads, and the box intakes move the powerband into the higher RPM's. I just installed a set of gt40p heads, e303 cam, 1. (Make sure you have a roller cam compatible dizzy for the HO cam, or just use the HO dizzy. 0 HO roller cam ($325. 72, Holley 700cfm DP, RG 4+1 Trans. Of course if they're used, you may not know how tired they are. You would have two mismatched parts, and the car wouldn't run like it should. 498/. 300 lift comparison, the intakes flow ±27% better (124/88 vs 158/115). Just recently a noise coming from the valve cover was getting louder and louder so i pulled the cover today and one of the rockers is quite a bit more loose than the others (rocker will seperate from valve if rocked by hand) so i tried torqueing it down and even after getting the bolt tight the I have GT40p heads along with a Comp Extreme Energy cam with the following specs 224/224 273/273 500/500 109 lsa. I want to do heads cam intake in the in the near future. Has a 1993 stock lower end from a junkyard,gt40p heads heavily ported by me,crane spring kit,1. Hurricane headers are rubbish quality and that's reflected in the price. Sure there are better aftermarket heads that flow better. I do not foresee any issues, has anyone else done this head swap with good results? So far I'm happy with the GT40 heads, GT40 intake, stock HO cam, a set of split ratio rockers, and a little boost. My question is: Will the newer GT40P heads fit and take an older 4v carb intake with no other modifications? This will be a daily driver, mild cam, flat top piston build. GT40P heads, 1. Just using the E7TE heads will deliver 225 Hp 5200 rpm and 300 ft-lb's of tourqe at 3200 rpm, with the HO cam. You still need to check for zero lash, and that the proper torque spec gives you the proper lifter compression. 7 RR and if I would have any clearance issues. 7 RR - I am new to the site and to motors. 448 cam, and you will do as well or better with the non-Ps if upgrading the cam. 92 It is bored . The 351 head is the old fashion method, while they improve upon port and valve size they just don't improve the burn. 73 gears, K&N filter,G T 4 0 tubular intake, BBK Full Length Headers, modified midpipe & Flowmaster muffs , timing at 1 2 *. 550 lift. Something to consider when using them. Find a set for a roller cam that can handle the lift. 242" (. Im going to rip my 302 down when it blows and im gunna use the shortblock and use gt40p heads with a lower intake and custom upper intake to fit an eaton m112 supercharger. 550 lift springs, E-cam, 1. You might as well stick with GT40P's. 396 posts No GT40P head will make the same power as a TFS or AFR head. Right now I have hooker long tubes but they are old and rusty (need to change). 0 Mustang & Super Fords Magazine as they go through the steps of installing GT-40P heads onto a Mustang. I have gt40p heads ready to go in tomorrow. long tube headers will fit with the gt40p heads instead of buying the MAC or ford racing headers. 5° ICL, NMRA prepped GT40P heads 1. The H. 6 Roller rockers, TFS Stage 1 cam, MSD 6A, Holley 650 4150 carb, Edelbrock Performer RPM intake, FRPP Shorty "P" headers, Dr Gas X-pipe, Flowmasters, 8. focusgm Discussion starter. in the stock shortblock with a 5spd car. If you're running a stock cam, 1. A torque monster from idle to 5500 rpm. im also using 1. I disassembled the engine and it’s gone. loss in a cyl. 72 putting valves open faster and sharper closing. I have a 1995 351w with roller cam and tappets, I want to put the gt40p The interesting part of the article was comparing Edelbrock's new "partial CNC" Performer RPM heads against a set of GT40p heads. P heads and a Stage 1 have been proven to be a 12 second combo around here time and time again. At the track the car went 1986 GT-X303 cam, 289 heads, 1. If I am not mistaken cam lifters and pushrods can be used as well. I am having the engine rebuilt. I'm running a 97 GT40P with a 5. 0 cam are pretty mild, it's a straight profile, . 93 GT 277whp 324tq, 306, GT40P heads, TFS stage 1 cam, 3. carb intake and I was wondering if you guys could point me in the right direction as far as a hydraulic flat tappet cam for this combo. 7 rockers will work perfectly. 0 with gt40p heads. GT40 lower and upper intake, 4. So not much reason to go above that unless you’ve done some serious porting. My engine is a pretty basic engine and every little bit helps. they have the same plug angle/bolt pattern as stock heads GT40P heads- only certain headers will work,due to the spark plug angle change. 302, GT40 Heads, GT40 Intake, 1. GT40, GT40P, would be great factory heads. basically you gunna get a few answers a custom cam=the best option obviously but it is not always in the budget. i am gonna call MAC tomorrow and see if they have anything that would work. Its a roller cam for a factory roller block, factory-type idle, . 0 with the GT40P heads and a set of 1. The most interesting part was the dyno graphs. 544 lift, 208/216 Dur @ . 050". 0 HO Bolt on upgrades - Guys, I have a HO with stock heads and intake. There's pretty much only one single coil performance spring that everybody sells. The original I believe was used in modern (mustang) times for the special CI heads used on the 93 Cobra Mustang which was a powered up 5. I'm getting some valve float @ around 5800 rpm so I've decided to replace my valve springs and lifters. 1987 Notchback - N/A stock 302, TFS heads, Holley Systemax, FTI cam, gt40 heads, gt40 intake, B303 cam w/1. 1979 Indy 500 Pace Car - Ported GT40P heads, Crane 1. Needless to say its not getting the job done lol. 500". If I go GT40 or(40p) heads, keep the non roller cam/lifters or do the retro fit to the roller rockers It's a new rebuilt shortblock 306 with my previous GT40P heads I had on my old engine. any help info would be great thanks. 0 out of a 1996 And ill need to know what length pushrods to go along with the machined heads, and the best cam to go along with this other option, i'm not sure if your summit headers will work. 302, GT40P Heads, E cam, 4 into 4, Holley 600, Mallory Unilite, Levy SD T5, 3. 6 roller rockers, ported stock lower, msd 6a box . Use care porting GT40 heads, as they have different flow patterns. car With D0OE heads, a fresh valve grind, a little clean up work, and (probably) new guides you will have about what a GT40P head does. What can I gain by bolting on a set of GT40P heads and a GT40 intake? The GT40P's are a little higher compression and should flow better so is there a big difference? Thanks, Mike I am currently running a rebuilt 96 Explorer 302 with GT 40 heads, 600 cfm carb, T5, 3. I think that cam is fine to use, I was erroring a bit more on the streetable side. 1987 Notchback - N/A stock 302, TFS heads, Holley Systemax, FTI cam, Astro A5 Best so far: 10. With a better/higher flowing tb And When all my buddies had 5-oh's; the hot ticket to the unported GT40P heads and a tubular intake was the XE258HR from comp. 0L V8 Mustang's stock HO cam, The stock Gt40P heads are good heads and will support 320-350 lb-ft of tourqe and 265Hp using the HO cam. The problem is when I bought the heads, the guy I bought them from said they had a valve job and the springs were running on a fcam.