99 Explorer engine (302) with GT40P heads | Ford Muscle ... Best cam for my 302? | Factory Five Racing Forum For the most part 302 heads and 351W heads are the same. 5.0, GT40P heads, Comp Cams XE270HR-12 on 1.6 rockers, TFI spring kit, Weiand 174 blower, Holley 750 mechanical secondarys, Mishimoto radiator, Edelbrock street performer mechanical pump, BBK shortys, T-5 conversion, 8.8 rear, 3.73 gears, carbon fiber clutches, SS Machine lowers, Maximum Motorsport XL subframes, "B" springs. Category. 668. A bit of info for those looking to build 300+hp 5.0L/302s ... 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. Brand New. Basically they are the highest performing stock ford production head available for the 5.0l. 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 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. DESIGNED FOR NON EMISSIONS 289-302-351 FORD WINDSOR ENGINES THESE DIRECT BOLT ON HEADS DELIVER MAXIMUM PERFORMANCE IN THE 1500-6500 RPM RANGE. That will increase the airflow through the engine however the airflow can be stopped by a stock exhaust system along with that head there are certain things that you must also put on the the heads so that you can get the advantage of increase . 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. Free shipping Free shipping Free shipping. I have the exact combination you describe. Jun 14, 2009. 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. Chamber Size: Stock (289 = 54cc, early 302 = 59cc, E7 & 351W = 64 cc ) Hardware: Complete Rocker Mount Type: Pedestal or Screw-in stud Runner Volumes: Stock Valve Sizes: 1.94" intake 1.60" exhaust 50 State Smog Legal: Depends on stock configuration. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. 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. Some exceptions are GT40 or GT40P irons, which can be had for less, but the performance gains are commensurate with the savings. 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. 226 duration and .474 lift and it works great. 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 I could afford after market then I would have gone with something else. There are a lot of variables that must be addressed to give a better estimate, but a good basic estimate is 20-40 HP at the crank. 69-70 351w and gt-40s have bigger intake ports. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. The best 351W head castings were produced from 1969 to '74, with right-sized chambers, ports, and valves for the 289/302. 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 Feb 11, 2010. My 351w is a 1974 with stock heads and pistons. In the first year of production for the 302 Ford decided to turn some heads by offering a high-performance version for their new V8 that would be used in the Shelby GT 350. These engines came with the GT40P head, which even with its small valves, offers really good performance. About as high as I want to go on 87 or 89 octane pump gas with my cast pistons. $700.98. Save. You can use these on any 289/302/351W engine. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. If you want to do a 302 on the cheap a die grinder, cam and lifters, 4v carb and intake manifold with a set of headers can get you 300 hp. With reworked GT40P heads (featuring larger valves), a unique eight trumpet inlet manifold, long throw crank, H beam rods and roller rockers. SPONSORED. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. Im sure you are close to 260 hp. With 12cc pistons you're well over 10:1 with 64cc heads. People dump a ton of money into modifying the old 289 heads, or even 351w heads, and stock . They are doing me no good right now so they are up for sale! More port flow equals more power, so choose carefully. LOOK NO FURTHER THAN YOUR LOCAL JUNKYARD. 1987 Notch - N/A stock 302, TFS heads, Holley Systemax, FTI cam, Astro A5. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. The bottleneck will be the heads. madmaxx69. very mild cleanup of the ports (DIY in my basement) i would think a carb would be closer to 300 too. Get into 58cc heads, and you're talking closer to 11:1. Save. (Please note these are not GT40P Explorer heads). 2 L was to be an interim engine which would remain until the new V6 was in production - the 255/4. Can I put 302 heads on a 351W? Comes with parts to fit the staggered tip length valves used in SB Ford GT40P heads. Notes: P.C Automotive also offers early 289, early 302, E7, and 351 W heads. Free shipping. Finding Gt40p heads at the junkyard is getting more and more complicated and if you want to upgrade the heads you have to take into account the costs of the machine shop and compare everything to a set of cheap aluminum heads. The GT40 was used on mustangs and some explorers, GT40P on 97 explorers and Mountaineers I believe. Re: Choosing pistons to complement GT40P heads. 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 . It just needs a special header, and all of the smog pump stuff has to go for the F150 application. SAVE CLOSE TO $200.00 FOR THE SAME PRODUCT JUST DIFFERENT BRAND NAME. Ford Performance Parts M-6049-Z2 Multiple US Locations. That said there are some better aftermarket options for heads also. best stock ford ever made. These heads have been remanufactured using refaced reclaimed Factory Valves. We also added an Edelbrock Performer RPM. We took my buddies car to the dyno with both sets of heads, the GT 40's and the E7TE's. The gt 40's ported and polished made 270 hp at the rear wheels, the E7te's made 254hp fully ported and polished. Save. Ford Australia also built some stroked, 5.6 L Windsors. 289-302-351w all have the same size exhaust ports, avoid ones with air injection bosses, they are further restricted. 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. mine made ~270 at the wheels. I had a set of '69 302 heads I ran for a while . or Best Offer. It diffeniatly pulls real hard. If you mean a late 5.0 roller cam engine the heads will go straight on because this is what they were originally fitted to. I would like to see if someone could build a 450hp 302 with pump gas and no power adders. You can have your current 28 oz rebalanced to 50. Some exceptions are GT40 or GT40P irons, which can be had for less, but the performance gains are commensurate with the savings. posted 10-21-2005 12:45 PM. GT40P's, 600 cfm Holley, Performer intake and matching cam, Blackjack headers on a 302. For use with hyd flat tappet cams w/ up to around 226 degrees @ .050". Edelbrock 5089 Complete Pair Cylinder Head. Upgraded springs is a must, and the gt40p's are a vast improvement over the e7 heads of the later 5.0l, and higher performance than stock gt40 (non-P) heads. It needed to fit the heads without machine work, produce a decent seat and open load and allow for at least .544" lift. It was a low-performance head designed to increase economy, due to the gas crunch.
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