I'm wondering how these heads will interact with the paxton 1220 sl supercharger I'm trying to put on. We need a build on a 400+ hp 302/6 build. If by 302 you mean an early '67 on flat tappet engine you will, as he said, need to sort the steam holes. T5 with 3.73s. The whole sbf head thing is pretty complicated. Kaase's P38 heads fit the 302-347 and the 351Windsor blocks as well as Dart's . gt40p's,Bcam,1.72 rr's,exloder intake,etc.. EFI. GT40p Heads | Note: These heads have a different spark plug angle, which will require headers that clear the spark plugs. For the most part 302 heads and 351W heads are the same. '67 project. 226 duration and .474 lift and it works great. At some point in the 70s Ford combined the 302 and 351W head into one. The exhaust ports are the weak link on all of them. Ford Factory 5.0 Performance Cylinder Heads. Best cylinder heads for a 68' 302. The downside is this head also has smaller valves (1.67/1.39 inches), which can be increased to 1.94/1.60 inches to improve performance. Depending on your induction system, camshaft, and exhaust, these can add anywhere from 35 to 90hp on average over your stock cylinder heads - possibly more. This version is for SB Ford GT40P w/ Hyd Flat Tappet cam/lifters. or Best Offer. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. It just needs a special header, and all of the smog pump stuff has to go for the F150 application. These power numbers will be very similar with both the GT40 and the GT40p Cylinder heads. Your about to add a very mild 302 top end on a 347 , you mine as well just slap that stuff on your current 302 save the money on a stroker and buy a blower. I have a simulair combo but my camshaft has allot of duration. BE sure to order the correct headers for your heads, a standard header will not clear . Also, GT40p heads DO NOT have smog ports. The 5.0L with the GT40 head had a 9.0:1 compression, and the 5.0L with the GT40P head had 9.1:1 compression. Use Ford Performance Head Gasket M-6051-CP331 or M-6051-S331 or for "Big Bore" application, use M-6051-R351 ; Must use Ford Performance M-6065-D289 Head Bolt Kit to install heads on 289/302 production blocks Ford Performance "X2" heads use either GT-40 or aftermarket intake manifolds. But there must be more potential from 302c heads than GT40Ps. C. Ford GT40P GT40 P SVT Explorer 302 V8 5.0 5L H.O. I've got gt40p heads for it I'll be running, and can't afford better . Up for sale is a 1986 4eye coupe ,with a 302 ,gt40 aluminum heads,typhoon upper and lower,car is mini tubed with weld rims front and back,custom stereo with a moni block and a 4 channel ,skar audio from front to back,the car has a v1 and is at 8 lbs of boost which made 443 trqe to the wheel,car has a holley efi in it,and will be fine tuned before sold,373 gears bbk long tube headers..car has . Ford offered a performance head that was a stock part on 1993-1995 Mustang Cobra models and pre- 1997-1/2 Ford Explorers and Mercury Mountaineers equipped with the 5.0 L engine called the GT-40 head (casting ID F3ZE-AA). The high performance 302 engine block was produced in Mexico and had a higher nickel content, therefore, making it stronger. Stainless steel valves are included, have been reground, and are 0.100" oversized. the heads are stock, redone with new spings, stock but new, i dont think i will have a problem with it, i hope, if not where could i get a cheap set of springs, i dont want this build going over a 1000, have about 350 in it so far with cam heads and heads gaskets and all, what rockers should i go with and should i convert to MAF, i saw the wiring kit on ebay for 39.99 then all i would need is . Check manifold for port match; not all intakes are . You could tell the difference.

How to identify your GT40 heads look for a "GT" or "GT40P" stamp inside the head casting or a three-bar (GT40) or 4 bar (GT40P) stamped on the side of the head. Anyhow, just to bring everyone up to speed on my little project, here's the plan: 306 (5.0L overbored .030-in), ~10.35:1 compression, TRW forged flat-top pistons, factory rods and crankshaft, GT40P cylinder heads w/ only a mild port cleanup and shaving, roller rockers, full-length headers, Exploder intake, 65mm TB, ~3000rpm stall through a . The 289 High Performance head to look for is the C3OE, which is the 1963 head casting with smaller 49.2-cc chambers for higher compression. Let's start with the GT40, these heads can be found on Ford Mustang, Explorer and SVT/truck Lighting applications. Save. GT40 heads can be found pretty much anywhere you look. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. Share - Ford Windsor V8 5.0 Xr8 GT40P Cylinder Heads (2) CURRENTLY SOLD OUT. Ford Racing M6049-Z2 Cylinder Head Z2 Velocity Vane Aluminum Assembled 63cc NEW (Fits: Ford GT40) $1,284.39. ARP 155-3601 High Performance Head Bolt Kit for Big Block Ford 390-428 FE Series (Fits: Ford GT40) $120.47. That said there are some better aftermarket options for heads also. If anything, it will make less power. It needed to fit the heads without machine work, produce a decent seat and open load and allow for at least .544" lift. Buy NEW SOUTHWEST SPEED BLACK T-BUCKET FENDERLESS CLASSIC ROADSTER HEADERS FOR SMALL BLOCK FORD ENGINES, 260 289 302 351 WINDSOR FORD GT40P HEADS, 32 FORD MODEL A, STREET HOT RAT ROD, NOSTALGIA, VINTAGE: Headers - Amazon.com FREE DELIVERY possible on eligible purchases GT40P heads; can get rebuilt pair, complete for $400+/-, new complete, just a little more. Step 1. I picked my heads for $45 and a buddy did all the machine work (larger exhaust valves, milling the heads, valve job . With reworked GT40P heads (featuring larger valves), a unique eight trumpet inlet manifold, long throw crank, H beam rods and roller rockers. Long tube headers are a terrific idea, but you need to open up the exhaust side. Install a set of 1.7:1 roller-tipped rocker arms on the heads. SAVE CLOSE TO $200.00 FOR THE SAME PRODUCT JUST DIFFERENT BRAND NAME. The MPH was there to run a little better but the local track is about terrible. The bottleneck will be the heads. Related: gt40 heads 3 bar gt40 intake gt40p heads 302 heads 302 ford heads gt40 intake manifold gt40 aluminum heads sbf heads sbf aluminum heads 351w heads gt40 cobra heads ford gt40p heads.
Back then, there wasn't a lot of choice for staggered tip length SB Ford heads. Early 351w's have bigger valves. madmaxx69. Go for it if you get them super cheap and can get headers/manifolds super cheap as well but otherwise I'd say it's a waste of time and money. Brand New. Last edited by BLDTruth; 04-22-2017 at 11:27 AM. Just put some 1.7 pedistal rocker arm on along with a mild camshaft (make sure to use the correct valve springs), you will make over 300 flywheel hp. It was a low-performance head designed to increase economy, due to the gas crunch. More port flow equals more power, so choose carefully. These engines came with the GT40P head, which even with its small valves, offers really good performance. Some exceptions are GT40 or GT40P irons, which can be had for less, but the performance gains are commensurate with the savings. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . I have some gt40p heads that I was going to enlarge the head bolt holes so they would fit a 351w.

Jun 14, 2009. For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. FIND A 5.0L EXP. Ford Motorsport GT40 aluminum heads are already made for the 351W's 1/2" head bolts. item 1 Ford 289 302 351W 408 427 5.0 Mustang Aluminum Heads GT40 EFI OR carburetor 1 - Ford 289 302 351W 408 427 5.0 Mustang Aluminum Heads GT40 EFI OR carburetor AU $1,240.77 +AU $1,665.11 postage The 302/5.0 is still available as a complete crate motor, from Ford Racing and Performance Parts. FOR MORE INFORMATION REGARDING PRODUCT OR WARRANTY PLEASE EMAIL OR PHONE INFO LINE. Posted on May 07, 2014 by promarengine. Basically they are the highest performing stock ford production head available for the 5.0l. The best 351W head castings were produced from 1969 to '74, with right-sized chambers, ports, and valves for the 289/302. Install a set of GT-40P cylinder heads from a late 1990's Ford Explorer or a set of GT40 heads from an early 1990's Mustang 5.0L. Mar 29, 2009. After discussing the cam specs, Alex smiled and agreed to build a kit for him. Remember building with 302 parts is going to yeild you 302 power. Designed as a successor to the Ford Y-block engine, it was first installed in the 1962 model year Ford Fairlane and Mercury Meteor.Originally produced with a displacement of 221 cu in (3.6 L), it eventually increased to 351 cu in (5 . If you're seeking an aggressive camshaft and 400 horsepower, stock cylinder heads probably won't be your casting of choice. The GT40 heads have thermactor holes built in to connect to the EGR/smog equipment whereas the GT40P heads us an external EGR connective system. posted 10-21-2005 12:45 PM. He hasnt run them, he decided to buy a built longblock I have and gave these to me plus cash. Once again, something to consider if your build requires you to take emissions into consideration. Adding to my '89 302 w/ stock rotating assembly: Explorer intake, have it 1 5/8" FRP shorties, have them 65 mm TB, have it 75 mm ProM MAF meter w/24# injectors; I know C&Ls are less expensive, but seem unpopular here - I'm still learning this EFI stuff. If I could afford after market then I would have gone with something else. Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. SPONSORED. We started with a 120,000-mile 5.0L out of a Ford Explorer, removed the EFI and DIS, and pocket ported the stock GT40P iron heads with stock valve sizes. They are doing me no good right now so they are up for sale! Windsor Car and Truck V8 Performance Parts. My 351w is a 1974 with stock heads and pistons. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. All OEM int/exh manifolds will bolt on. very mild cleanup of the ports (DIY in my basement) i would think a carb would be closer to 300 too. There's potential for 300+ streetable horsepower there. I think AU falcons came with the explorer intake (I'm not 100%), and they all had gt40p heads, too. The Mustang 5.0L Trick Flow valve spring kit includes 16 each of 1.47" diameter Mustang valve springs with dampers (110 lbs. I have the exact combination you describe. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. For use with hyd flat tappet cams w/ up to around 226 degrees @ .050". Only show this user. Anyways, I know the gt40ps will bump. People dump a ton of money into modifying the old 289 heads, or even 351w heads, and stock . Really, it was only at its best when coupled with the GT40 intake manifold. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. The 351W uses 1/2" head bolts the 302's use a 7/16" head bolt so you would have to redrill the the heads to 1/2", which would be a total waste since there is zero advantage in doing it.The majority of aftermarket heads are just the opposite which require a bolt spacer or a step down bolt which is available from A.R.P. Get into 58cc heads, and you're talking closer to 11:1. Fitment: GT40P 302 heads. Free shipping Free shipping Free shipping. 668. It might be easier to go for gt40p heads with the 5.0 Ford Explorer intake. Free shipping Free shipping Free shipping. The GT40P heads flow a lot better than stock 351 heads. A set of race-ported 351W C5AE heads will net you a whopping 215 cfm. Application: Hydraulic Flat Tappet cam applications. I plan on running a AFM b31 cam too which has relatively small duration for the intake valve. Ford Windsor V8 5.0 Xr8 GT40P Cylinder Heads (2) . Ford 289 302 332 347 427 5.0 Top End Kit Aluminum Heads .700 Springs Gt40 Efi Notes: P.C Automotive also offers early 289, early 302, E7, and 351 W heads. mine made ~270 at the wheels. Re: Choosing pistons to complement GT40P heads.

Im sure you are close to 260 hp. The heads I had previously were a set of fully ported and polished '70 351W's, three angle valve job, screw in studs and roller tip rockers. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Hey all, I'm working on building a 302 with my gt40p heads. Edelbrock 5089 Complete Pair Cylinder Head. I just upgraded my 94 GT with GT40P heads and I installed a trick flow stage one cam.I am pleased with the results for what I have in them. Cylinder Head, X2, Aluminum, Assembled, 64cc Chamber, 188cc Intake Runner, Ford, 289, 302, 351W, Each. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. Car Craft mag. (Please note these are not GT40P Explorer heads). Can I put 302 heads on a 351W? If these heads happen to have much larger valves, piston to . Learn more. Buy NEW SOUTHWEST SPEED BLACK T-BUCKET FENDERLESS ROADSTER HEADERS FOR SMALL BLOCK FORD ENGINES, 260 289 302 351 WINDSOR FORD GT40P HEADS, 32 FORD MODEL A STREET ROD, HOT ROD, RAT ROD, NOSTALGIA, VINTAGE: Headers - Amazon.com FREE DELIVERY possible on eligible purchases Buy a Ford Performance Single Groove Exhaust Valve for your 289, 302 or 351W GT-40 Cylinder Heads from CJ Pony Parts today! Save. May 5, 2003. The actual performance boost of the GT40 head isn't as noteworthy as you might think given the reputation this cylinder head has amassed. Actually the regular gt40's in either aluminum or iron are the good ones but the gt40p's are only a slight improvement over regular 302 heads.

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