I don't need tons of power to enjoy the car. Small-block Fords and Mopars only use four head bolts per cylinder, so retaining proper head-gasket sealespecially with nitrousis a point that demands attention, so we ordered a set of Fel-Pro MLS head gaskets rather than a standard, composition gasket. T5 with 3.73s. Definitely going to use my P heads. Every thing he tells you on this site is true. These are some of the pictures I have showing the Explorer manifolds. The Fora platform includes forum software by XenForo. are you twisted331 also? $700.98. For a better experience, please enable JavaScript in your browser before proceeding. Pretty sure that was name, but I could be wrong. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. This website is using a security service to protect itself from online attacks. Keep in mind that swapping camshafts is a fairly extensive effort. the springs are new stock oem ford. Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. Now he serves as a regular contributor to OnAllCylinders. Long tube headers are a terrific idea, but you need to open up the exhaust side. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. i have a question once i get the gt40p heads from the explorer truck can i also take the exhaust manifolds or headers and fit them in my 66 mustang:?:!?!?!? Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. Anyways, I know the gt40ps will bump . LOW-BUCK 302 FORD HEAD UPGRADE - YouTube In a 3,250-pound car like a Mustang with 3.50 gears and an automatic with a 2,800-rpm converter, this 5.0L could pull 12.80s at 108 mph. In review, we rescued a used 5.0L Ford from the boneyard, ported the heads, added a cam, carburetor, intake manifold, and headers, and pulled an amazing 376 hp out of the mix. The GT40 heads are a bit more versatile, working with the 5.4 and 6.8, while the GT40P (Explorer/Mountaineer) heads will only work on the 6.8 due to an interference issue. 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). $930.00 + $55.00 shipping. Very true about finding them at the local yards. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. Part of this reason is due to its inherent strength and simplicity, but a lot of it has to do with how little Ford has changed it over the years. Not *as* good as the GT40p heads, but I'd prefer to not have to worry about exhaust fitment issues, or have a narrow range of what I can work with. Budget 300HP 302 Build 1986 Short block with notched pistons. Theres many options available for a little more power. Slover primarily focused on the exhaust side of the GT40P heads. made more power everytwhere and 40 hp is respectable. This test went so well that we were eager to see what the slightly bigger cam would do. GT40 vs GT40P: Who has Smaller Chamber Volume ! More compression As a matter of fact, Central Coast has an '89 coupe with GT-40P heads that has run a best of 11.98 in the quarter-mile. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. This will follow the guideline of a 1.6 rocker baseline and factory bottom end 79-95 related 5.0L Mustangs only. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. On slicks the car went some low 7.70s right at 90mph. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. I have a 432 HP non Hi Po 289 I built. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. Supercharging GT40p heads | Modded Mustang Forums Trick Flow Mustang Valve Spring Upgrade Kit - Cast Iron Head (79-95) The spark plug issue is almost a non-issue. It runs smooth but seems lazy. Scorpion 1.6 roller rockers. What did the heads flow? Not sure how they would mate up to your existing exhuast, but otherwise they should work. A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. The only failures Ive had were timing chains and a couple broken rods in a mid 80s 302 with 200,000 miles on it that got about 35 lbs of boost stuffed into it when a pop off valve I bought on ebay failed. 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. We gained 45 hp and 40 lb-ft of torque. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. Or just play it safe and let the fans ask away about another daring 5.0 TB bolt on or for an exciting surprise, do a LS______ fill in the blanks. Free shipping. Enter your search keyword. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 This is just a quick overview of the changes that need to be done. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. There was an article in Hot Rod magazine in the mid '80's where Jon Kaase was developing 351w packages. Install a "wet" nitrous plate system (which carries both nitrous and fuel) onto the intake manifold and jet it conservatively for a 100 horsepower shot. Runs well. 302, GT40P Heads, E cam, 4 into 4, Holley 600, Mallory Unilite, Levy SD T5, 3.73, 15" Team III, firewall mod, trunk mod, trailer hitch, drivers foot box mod, front tow rings. We need a build on a 400+ hp 302/6 build. At 4,300 rpm, the torque peaked at 348 lb-ft, a solid 20-lb-ft improvement, and the Lunati continued to outperform the stock cam all the way through with a peak horsepower increase of 60 hp at 354 hp at 5,700 rpm! Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. Through Central Coast you can have the heads fully prepped for your combination. If you have a early 351W ie pre 76 it probably . $139.99. A good port job can set you back another $500-$1,000. For real performance, stock E7TE heads leave a lot to be desired. However there are plenty of factory heads that with the help of an experienced machine shop can be great. Click to reveal Thanks. Compare. anyone have experience with GT40P heads on a 92 351W What Cam and Springs to Use for GT40 Heads However, theres a distinct possibility that I might pull all of my hair out if I see another in-depth article explaining how I, along with just over a billion other desperate humans seeking answers, need special valve spring split locks for my next tired Chevy build. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR Understanding Ford's Fox Body GT40 Cylinder Heads - CJ Pony Parts We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. We've seen what happens from previous Ford experience when power levels above 500 hp tend to either pop head gaskets or saw blocks in half. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. The specs are a conservative 212/218 degrees of duration at 0.050-inch tappet lift but offer a really nice 0.512-inch valve lift for both the intake and exhaust. If I get different urges later, Ill pursue those then. Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. Compare. 99 Explorer engine (302) with GT40P heads - Ford Muscle Cars Tech Forum A mild porting with gasket matching will be very good. 302 explorer short block with roughly 80k miles GT40's from a local u pull n pay ($97) weiand x-celerator trick flow stage 1 cam 650 holley double pumper car made 322/329 SAE . If you're going to use the stock 289 heads, install 1.84-inch intake valves, then port the intake and exhaust; these mods will net you about 185 cfm of intake port flow at 0.50 lift. The kit offers adjustable power from 50 to 250 hp with a simple jet change. Install a set of 1.7:1 roller-tipped rocker arms on the heads. GT 500; Posts: 8496; Location: Brisbane . I may do some port matching and a little cleanup, otherwise just a set of springs and cam and see what I have. What Are The GT40 & GT40P Heads? - LMR.com I spin it to 6500 and thats about it. Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. An aggressive cam will wake it up a bit. Stock valve sizes? Limited header choice is certainly a challenge. Obviously, tuneups will vary. It's a classic move we've pulled off many times. Similar to regular GT-40 heads, the biggest difference between the two is that the P-heads feature a revised spark plug angle which extends the plug into the combustion chamber, putting the flame front close to the absolute center of the chamber, resulting in a smoother combustion process. will gt40p heads fit on a 302 | Ford Mustang Forum A forum community dedicated to Ford performance owners and enthusiasts. AFR 165cc 58cc Heads. 302 heads on 351w | ClassicBroncos.com Forum Joined . There are a couple of reasons for this suggestion. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! I recall having an absolute blast with my old K-code coupe back in the day. You gave me the info I was looking for, and I really do appreciate it. I guess I had it backwards, sorry about that, didn't mean to spread misinformation. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . Yank a motor out of the junkyard, clean it up, add a camshaft, intake, and a carburetor, and see how much power we can squeeze out of it. 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. You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. For all of us interested in Gt40p heads. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. Related Resources Mustang Generation Nicknames: What Do They Mean? No-option stripper- I like strippers. Buy the lifters for peace of mind now and hopefully for the duration. Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. Jeff Smith: It would have been better to know a little bit more about your combination, but the short answer is yeswith a hydraulic roller camshaft, assuming the lifters are in good shape and the roller wheels show no unusual wear, they can be re-used on a new cam with no danger of adverse effects. Ford Explorer Mountaineer 5.0 Ohv Iron 302 Sbf I have to agree, the GT40P heads flow better than the GT40 iron heads. When compared to the new generation of performance engines on the market today like the 5.0L DOHC Coyote engine, your engine will not come close. 68 XR7 & 68 M-100. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . Upgrading Fox Body Cylinder Heads - AmericanMuscle.com I love my setup and it is very strong engine. Ask Away! with Jeff Smith: Camshaft and Cylinder Head Recommendations Sponsored. With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. Works on all factory cast iron E7, GT40, and GT40P cylinder heads! Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. bmcdaniel, Feb 17, 2004 #7. v8maverick Member. If you're running a stock cam, 1.7 rockers will work perfectly. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. Be careful, I was once bitten by one of those reptile engine builders. After we installed the heads and with the fan off, he ran a 12.46 at 107.9. As usual, there is much more to this story. I'm running stock GT40 heads with stock 4.000 bore on cylinders and a Lunati cam with 256/262; Duration @ .050 (Int/Exh): 213/219; Gross Valve Lift (Int/Exh): .483/.499; LSA/ICL: 112/108. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. With gt40p heads and 289 hipo exhaust manifolds changing sparkplugs is the same as the original 302 heads and manifolds, I use the spark plugs that are recomended for the explorer with gt40p heads and you can use straight or angled boots. Step 2. Adding the headers may also require a slight increase in secondary (and possibly primary) jetting to ensure the proper air-fuel ratio, but thats also an easy tuning change. (Image/Harrison Creamery). Then why did you port the heads and how do you know if you made an improvement. Because its all been done time after time after. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. The engine was only rated at 215 hp, but it at least had 9.0:1 compression. K.S. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. Assemble the rotating assembly with a stock 5.0L crankshaft, a set of 5.0L rods and the specified pistons with stock-type rings. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! At the time, I was still running smog equipment in a 1994 Mustang GT, so I had them drill the back of the heads for the thermactor connection. Weiand 7515 xcellerator intake. As with Chevrolet's small-block engine, the aftermarket has had dozens of years to expand the range and reduce the cost of the parts they offer for this engine. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Gt40/gt40p Heads On A 351w Questions - StangNet We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. Skip to main content. 1983 Mustang G.T. I'm running BBK un-equal length shorty's, and I'm able to get all the plugs in, tight, and all plug wires on. All costing in the end at least another $2k. Overview. You can have your current 28 oz rebalanced to 50. However, when we dyno'd the car before installing the GT-40P heads, the fan was on the car. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. 351W with GT40P heads? | Mercury Cougar Owners Just make sure it is a roller cam. I need that part number too! Seriously though if you're not planning on an all-out attack for HP, I'd consider a forged piston out of Probe's SRS line-up. If you dont feel comfortable doing this higher a pro. people can stop saying that adding aftermarket cam with stock heads is a waste of time. #3::: Do your homework,get quality parts,dont skimp. Finally, we exchanged the Explorer's EFI manifold (which is a pretty good manifold in its own right) for an Edelbrock Performer RPM Air Gap intake and a Holley 750-cfm HP-style carburetor. We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. You'll have to plug the oil hole that is in the engine from the old oil dipstick. Max hp out of gt 40 heads | Mustang Evolution Forum These heads have been remanufactured using refaced reclaimed Factory Valves. This engine will be good for your 65 Mustang. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. We've already been motivated to put this engine in a buddy's Mustang. Not looking for crazy HP. I'd get the gt40 setup, and put an s trim on it. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. The engine never huffed oil out of the breathers, and the spark plugs all looked excellent. I'm also have the regular GT40 heads on my current build. GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. LOW-BUCK 302 FORD HEAD UPGRADE Richard Holdener 239K subscribers 189K views 2 years ago WESTECH PERFORMANCE GROUP WHAT'S IT WORTH? Our recommendation would be, rather than change the camshaft, you might want to look into adding a set of long-tube headers and a dual exhaust if the engine is not already so equipped. If you go with a diffrent cam, make sure you change springs, The Trick Flow kit comes with everything for around $130. Yea. Thank You. Yes Mr.Smith, your column here at OAC adorned with extreme performance without power adders, or all Engine as its known, from a superior pushrod Small Block featuring almost all USA sourced modern components with the familiar smell of Ford Blue. Not to mention, they will run circles around GT40P's out of the box. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. All in all, the addition of GT-40P heads to any 5.0 Mustang is a worthwhile venture, especially if you're on a budget (aren't we all) or shooting for the Trophy Stock title. When building an engine there is a lot to take into consideration. check out the. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Fastest e303 5.0l's? - FourEyedPride.com I have heard this rod bolt weakness myth for years but have yet to have a single problem with them in any of the SBF engines I have pounded on for the last 30 years and there have been lots of them. http://vb.foureyedpride.com/showthread.php?t=89153, http://www.facebook.com/groups/233213650060739/, ascMcLaren & Motorsport/Grand Prix IV Capris, RHD and Other International/Export Models, Mods, Maintenance & Mechanical FAQs/Archive, If this is your first visit, be sure to by travis Sun May 03, 2020 8:33 am. The reason for this is that we're actually replacing mildly worked E7TE heads. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. Gt40p heads - FourEyedPride.com Consider having the head's intake ports matched to the intake manifold gasket. We will go into more detail on the head mods in a later story in Junkyard Builder, so watch for it. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. Good on ya Jeff Smith. A COMP hydraulic roller cam we found works well with this combination. How to Build a Budget 383 Stroker Chevy How do I Increase Horsepower on a 440 Cylinder Head Specifications for a 1969 How to Get More Power Out of a 92 4.3 dragster engine image by Robert Young from, Copyright 2023 Leaf Group Ltd. / Leaf Group Media. Posted on May 07, 2014 by promarengine. Hey all, I'm working on building a 302 with my gt40p heads. You can find them on later model Mercury Mountaineers and several other Ford SUV applications. Thanks for the help, I was planning on puttingin roller rockers or at least new springs, and that engine looks great, hoppfully mine will look at least similar to that one of these days. Install a set of 1.7:1 roller-tipped rocker arms on the heads. 302 GT40 Dyno Results - FourEyedPride.com Over $2050 for the 165/185 renegades. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. But the part about a cam replacement possibly being a labor intensive undertaking is correct. check out the. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I wouldnt recommend reusing lifters though. 1996-2001 Ford Explorer 5.0L V8 Specifications 289 or 351 heads on a 302 advantage? | The H.A.M.B. 1.7 shaft rockers and beehives. For those of you running a carb, or aftermarket intake, you already have a leg up in this area and should see even greater gains in power. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! Performance & security by Cloudflare. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. this head fits years 95-01 explorer mountaineer mercury mountaineer . And have discovered something that I dont think anyone else knows. Depending on the Headers you have you might be okay. Some ideas never go out of style. E303 Cam advanced 4 degrees. Someone does make the Tri-Y's headers for the early Mustangs using the "P" heads. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. Take the assembly to a machine shop to have it balanced and install it in the block. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. 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. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. . No-option stripper- I like strippers. 1 - 7 of 7 Posts. Test 1: 750-cfm carburetor, dual-plane intake manifold, and stock camshaft. At the dragstrip, we gained two-tenths and 2 mph. (Please note these are not GT40P Explorer heads). fuel injection system . This will keep you from dropping your overall static compression ratio and losing power. I got lucky and found a complete Explorer GT40P engine online. We probably could have coaxed an even 300 hp out of this stock configuration, but with such good numbers, we decided to jump right into the first Lunati cam. If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. And remember ENGINES have been being built/rebuilt/modified for years. How to Get More Horsepower Out of a Ford 289 | It Still Runs ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. Save narve00 Real world data seems to show that GT40 or GT40P cylinder heads, assuming no other mods on your Foxbody, are good to add anywhere between 20-40 HP (over stock heads). We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. But dont think that adding a bigger camshaft will make more power. 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'd love to use these heads,. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. I'm sure the dyno operator used some goofball correction factor to make the numbers look higher. They fill that spot between power and budget. I must agree with Jeff Smith. These engines came with the GT40P head, which even with its small valves, offers really good performance. SBF engines are modified constantly. Well offer one as an example. The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. Mar 23, 2004. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. Pride is built, in your garage, with your two hands. 1979 Indy 500 Pace Car. Holten's best time is a 12.63 at 105.9 mph, and if we gain the desired result he will be right in the thick of things in Trophy Stock competition. JavaScript is disabled. You didnt mention which cam you had in mind.
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