If these heads happen to have much larger valves, piston to . The Mustang 5.0L Trick Flow valve spring kit includes 16 each of 1.47" diameter Mustang valve springs with dampers (110 lbs. Best cam for my 302? | Factory Five Racing Forum 1987 Notch - N/A stock 302, TFS heads, Holley Systemax, FTI cam, Astro A5. best stock ford ever made. If you're seeking an aggressive camshaft and 400 horsepower, stock cylinder heads probably won't be your casting of choice. 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. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . 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. 1996-2001 Ford Explorer 5.0L V8 Specifications - The ... 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. GT40P's, 600 cfm Holley, Performer intake and matching cam, Blackjack headers on a 302. LOW BUCK, GT40P 5.0L HEADS-CHEAP & EFFECTIVE. 69-70 351w and gt-40s have bigger intake ports. Over 1000 investedFresh GT40P Heads with Alex Parts .540 lift kit. A bit of info for those looking to build 300+hp 5.0L/302s ... Ford GT40P GT40 P SVT Explorer 302 V8 5.0 5L H.O. Stainless steel valves are included, have been reground, and are 0.100" oversized. 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 . Install a set of 1.7:1 roller-tipped rocker arms on the heads. . Ford Motorsport GT40 aluminum heads are already made for the 351W's 1/2" head bolts. Cylinder Head, X2, Aluminum, Assembled, 64cc Chamber, 188cc Intake Runner, Ford, 289, 302, 351W, Each. How much horsepower does GT40 heads add ... Aclot of racers that have to meet stock OEM heads requirements, also uses these heads. All OEM int/exh manifolds will bolt on. ARP 155-3601 High Performance Head Bolt Kit for Big Block Ford 390-428 FE Series (Fits: Ford GT40) $120.47. Re: GT40P Heads on 302 windsor. Trickflow Performance Upgrade This Trick Flow valve springs kit allows you to install a high performance cam of up to .542" lift on any 289-351W with OEM cast iron cylinder heads. Comes with parts to fit the staggered tip length valves used in SB Ford GT40P heads. (Please note these are not GT40P Explorer heads). The GT40 was used on mustangs and some explorers, GT40P on 97 explorers and Mountaineers I believe. GT40, GT40P, would be great factory heads. How to Get More Horsepower Out of a Ford 289 | It Still Runs If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. If these heads happen to have much larger valves, piston to . Vehicle: '70 Maverick Grabber. Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at .50-inch lift, but flow more than the 289 heads at all other lift ranges. Brand New. best et 11.13 and no head problems yet to date. GT40P Heads that were bought by a friend of mine on Corral. The exhaust ports are the weak link on all of them. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Heads are machined for screw in rocker studs (about $300 worth of machine work). Free shipping Free shipping Free shipping. If I could afford after market then I would have gone with something else. Ford small block engine - Wikipedia 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. LOOK NO FURTHER THAN YOUR LOCAL JUNKYARD. GT40P 302/351W Heads FOR SALE! | SVTPerformance.com GT40P heads - Ford F150 Forum - Community of Ford Truck Fans very mild cleanup of the ports (DIY in my basement) i would think a carb would be closer to 300 too. The Ford small-block (aka Windsor V8) is a series of 90° overhead valve small block V8 automobile engines built by the Ford Motor Company from July 1961 to 2002.. C. gt40p's,Bcam,1.72 rr's,exloder intake,etc.. EFI. 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. I have some gt40p heads that I was going to enlarge the head bolt holes so they would fit a 351w. Re: Choosing pistons to complement GT40P heads. 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. The best 351W head castings were produced from 1969 to '74, with right-sized chambers, ports, and valves for the 289/302. 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. Will also fit 1979 to 1985 V8 Mustang and other Fox chassis vehicles with modifications. Category. Ford Shortblock with Rebuild Kit RCF302QP .020 over. GT40p Heads | Note: These heads have a different spark plug angle, which will require headers that clear the spark plugs. If by 302 you mean an early '67 on flat tappet engine you will, as he said, need to sort the steam holes. Ford Racing M6049-Z2 Cylinder Head Z2 Velocity Vane Aluminum Assembled 63cc NEW (Fits: Ford GT40) $1,284.39. These engines came with the GT40P head, which even with its small valves, offers really good performance. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. 4 Bar cylinder heads 289 351. 500. Feb 11, 2010. The only combo off the top of my head was a 88 hatch. 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. GT40P is supposed to be the best factory head ford ever made for the 302. You can use these on any 289/302/351W engine. 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. 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. May 5, 2003. If your adding those gt40p heads, I wouldnt worry to much about a cam. It was a low-performance head designed to increase economy, due to the gas crunch. Last edited by BLDTruth; 04-22-2017 at 11:27 AM. Once again, something to consider if your build requires you to take emissions into consideration. The bottleneck will be the heads. Best cylinder heads for a 68' 302. 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. Basically they are the highest performing stock ford production head available for the 5.0l. Almost everyt You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. 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. mine made ~270 at the wheels. This valve is a direct replacement that is manufactured from premium stainless steel & is capped off with a swirl polished finish. 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. I've got gt40p heads for it I'll be running, and can't afford better . On slicks the car went some low 7.70s right at 90mph. Ford Australia also built some stroked, 5.6 L Windsors. posted 10-21-2005 12:45 PM. What a difference in performance too. built one using a 91' HO short block with a set of AFR 165 heads, Weiand dual-plane and a Road Demon Jr. 625-cfm carburetor. They have 150k miles on them, alot of people have bought GT40P's from the guy he got these from and have been happy. I'm not sure about the dimensions, but the GT40P heads, if I recall right, I think were produced for trucks or Explorers and are different. 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. Ive heard that gt40p heads go flat in hp after 400 lift so duration is your friend. Jun 14, 2009. Also, GT40p heads DO NOT have smog ports. 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. Save. 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. More port flow equals more power, so choose carefully. Free shipping Free shipping Free shipping. Everything fresh from machine shop wrapped in plactic.Edelbrock 2121 Aluminum Intake 289 302 150Powermaster Ford Mini Starter 125New flexplate, balancer, gasket kit, misc. Windsor Car and Truck V8 Performance Parts. Posted on May 07, 2014 by promarengine. He hasnt run them, he decided to buy a built longblock I have and gave these to me plus cash. However there are plenty of factory heads that with the help of an experienced machine shop can be great. I have the exact combination you describe. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. It diffeniatly pulls real hard. Free shipping. Long tube headers are a terrific idea, but you need to open up the exhaust side. GT40 heads can be found pretty much anywhere you look. Aftermarket Cylinder Heads. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. The high performance 302 engine block was produced in Mexico and had a higher nickel content, therefore, making it stronger. madmaxx69. T5 with 3.73s. 2 L was to be an interim engine which would remain until the new V6 was in production - the 255/4. The hp bump of the heads is on a modified short block that will use the air increase, it's going from 350 hp to 450. These heads have been remanufactured using refaced reclaimed Factory Valves. I think AU falcons came with the explorer intake (I'm not 100%), and they all had gt40p heads, too. After discussing the cam specs, Alex smiled and agreed to build a kit for him. At some point in the 70s Ford combined the 302 and 351W head into one. Im sure you are close to 260 hp. I picked my heads for $45 and a buddy did all the machine work (larger exhaust valves, milling the heads, valve job . These MAC Shorty Unequal Length Headers are designed to fit the 1986-1993 5.0L V8 Mustangs with production and new angled spark plug 5.0L GT-40 "P" cylinder heads. 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. Answer: Best estimate is about a hundred horsepower. That said there are some better aftermarket options for heads also. GT40P heads; can get rebuilt pair, complete for $400+/-, new complete, just a little more. Can I put 302 heads on a 351W? 668. Ford Windsor V8 5.0 Xr8 GT40P Cylinder Heads (2) . Fitment: GT40P 302 heads. The actual performance boost of the GT40 head isn't as noteworthy as you might think given the reputation this cylinder head has amassed. 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). . 289-302-351w all have the same size exhaust ports, avoid ones with air injection bosses, they are further restricted. The MPH was there to run a little better but the local track is about terrible. Reference from: maintenanceassociates.net,Reference from: mojamall.net,Reference from: perception-architecture.com,Reference from: innovadigitals.com,
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