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. 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. T5 with 3.73s. 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. 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. Even with relatively small valve sizes of 1.85-inch intake and 1.46-inch exhaust, the P-heads flow much better than previous. 331/347 stroker w/gt40p's, waste?Hp?cost involved? - Maverick For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. We took the heads to Mike Slover of Slover's Porting Service in Sun Valley, California, to do this work, plus some basic pocket-porting to improve flowespecially on the exhaust side. I have to agree, the GT40P heads flow better than the GT40 iron heads. At the dragstrip, we gained two-tenths and 2 mph. If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. Compare. According to his data and verified dyno tests with an EFI 302, you can go above this level if you port the stock, lower intake manifold, or upgrade it altogether. 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. There are caveats to this plan, however. Application Fits 1979-95 Mustang 302/351 w/ OEM Small Block Ford Heads Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. Gt40p heads - FourEyedPride.com . You could run a thinner head gasket as well. For a better experience, please enable JavaScript in your browser before proceeding. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. Cloudflare Ray ID: 7a2e2d95dedea1e4 You can have your current 28 oz rebalanced to 50. 1996-2001 Ford Explorer 5.0L V8 Specifications Assorted screwdrivers, pliers and vise-grips. '85 GT vert two tone (white on charcoal)white leather, http://www.facebook.com/groups/233213650060739/, http://www.summitracing.com/parts/TFS-2500100/, 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 It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. Keep in mind that swapping camshafts is a fairly extensive effort. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. LOW-BUCK 302 FORD HEAD UPGRADE Richard Holdener 239K subscribers 189K views 2 years ago WESTECH PERFORMANCE GROUP WHAT'S IT WORTH? Win or lose, if you buy the ticket you must take the ride. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! This is needed for the steel roller cam. In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. Every thing he tells you on this site is true. In order to make Coyote-type power you will need some expensive, high-flow cylinder heads with a short block that can withstand spinning in excess of 6,500 rpm. However I think the opportunity window is slowly closing. Ported Hurricane Single Plane and custom 750 HP. Test 1: 750-cfm carburetor, dual-plane intake manifold, and stock camshaft. 302 heads on 351w | ClassicBroncos.com Forum You just want to keep it out of detonation. gt40p heads on a 289 in a 66 | Vintage Mustang Forums The question was whether we wanted a torquey small-block or a more cammed-up rpm engine to boost peak horsepower. Purchase a set of flat top pistons (from Ford Motorsport, TRW or Keith Black) with machined valve reliefs and designed to provide 10:1 compression with a 59 to 60 cc combustion chamber cylinder head. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Max hp out of gt 40 heads | Mustang Evolution Forum In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. I'm also have the regular GT40 heads on my current build. I got lucky and found a complete Explorer GT40P engine online. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. Ford Factory 5.0 Performance Cylinder Heads. You didnt mention the car this engine is in, but lets assume there is enough room to remove the radiator and any other coolers and perhaps some or all of the front grille and/or brackets before the cam has sufficient room to exit the front of the engine. Im 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. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. Free shipping. Yea. 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. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. 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. check out the. All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! The hardest part of swapping the cam was just getting the timing cover off and back on again. Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at 0.50 . 950.00 us a set and will ship . Compare. The 302 uses smaller 7/16" head bolts and your "P" heads may or may not require the step washers. This is not a criticism but instead consider it to be more of a heads-up. 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 just read about this build on the corral.net. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. But dont think that adding a bigger camshaft will make more power. 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. I view the GT40P heads similar to Granada brakes. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. I guess someone could just do a basic valve job and throw on the GT40 upper/lower intake for a cheap HP boost. this head fits years 95-01 explorer mountaineer mercury mountaineer . 68 XR7 & 68 M-100. A LOT of them do it these days. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. Obviously, tuneups will vary. Free shipping. This one added another 10 degrees of duration over the smaller Voodoo cam, along with 0.020 inch more intake valve lift. Nudge us with emails, and we'll make it happen. Budget 300HP 302 Build They suffered from poor aftermarket support up until about 15 years ago when it really came on strong. If I get different urges later, Ill pursue those then. Can I run the new cam with the same roller hydraulic lifters or do I have to change the lifters too? Like I said lots of options. Im now thinking of adding a cam to match the carb. A bone stock 2bbl early 351w with stock replacement forged pistons (9.0 compression) and dyno headers made 211 Hp . 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. This engine will be good for your 65 Mustang. What Cam and Springs to Use for GT40 Heads We've already been motivated to put this engine in a buddy's Mustang. You need to check. Once the headers are in place, then you can consider if you still want more power. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . Consider having the head's intake ports matched to the intake manifold gasket. The longer duration created a slight loss of torque below 3,300 rpm compared to both previous cams, but beyond that mild loss of power, the bigger Voodo out-powered its smaller cousin, cranking out a peak torque of 355 lb-ft at 4,300 (a gain of 7 lb-ft over Test 2) and charging to a peak horsepower of 376 at 6,000 rpm. I was looking at putting on the GT40P heads on. 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. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. Without changing the stock pistons. There's not a lot of reson to use 351 heads later than '75 since they essentially identical to 302 heads except for head bolt holes. Here a comparison of different heads on a 302: I'm very happy with my GT40P. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. GT40P heads, what kind of performance do they give? We need a build on a 400+ hp 302/6 build. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. For additional insurance, we also added a set of ARP head studs, which are stronger and offer better thread overlap than factory bolts, which helps prevent pulling threads out of a used block. As you might expect with more duration, the idle quality dropped significantly but was still able to make 11.5 inches of vacuum at 980 rpm. 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 the springs are new stock oem ford. 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. Thanks. Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. Just make sure it is a roller cam. Runs well. Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend I have managed to get 402 horse power from a 289 hipo natural aspirated. 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 cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. That's an improvement of 22 hp over Test 2. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. Along with the heads, we used MAC headers for GT-40P heads. For 2018, the Coyote makes 460 hp. You didnt mention which cam you had in mind. The multiple-layer steel construction allows the gasket to conform to movement between the cylinder head and block while maintaining a good seal. GT40 vs GT40P: Who has Smaller Chamber Volume ! More compression 69.90.139.244 Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. These are a great head but do need some machining mods to make they really work well. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. Anyways, I know the gt40ps will bump . I'm new and I'm currently building a 302 on a budget and want to raise compression without milling heads but by pistons and I want to get close to 10:1. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. What you are trying to do is to increase the amount of airflow through the engine in order to make more power. 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. So I've got the motor and heads already for my maverick project. Buy the lifters for peace of mind now and hopefully for the duration. Paying a premium for a set of GT40P heads or dumping money into some to get their performance to rival aftermarket is not for me. Also, the spark plug angle makes it a pain. The kit offers adjustable power from 50 to 250 hp with a simple jet change. Well that article just got me very ancy, I want these heads!! 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. 1983 Mustang G.T. I have been working on Fords for 40 years and I have experimented with a few tricks of my own. 351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum I wouldnt recommend reusing lifters though. Pride is built, in your garage, with your two hands. Ha! The later model distributors had a different diameter shaft than the earlier ones. just curious. These are Ford iron GT-40P heads. However, stepping up in the performance head market will set you back more than $1,200 for a decent pair of aluminum castings--and that's straight out of the box, with no porting. Over $2050 for the 165/185 renegades. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. Slover primarily focused on the exhaust side of the GT40P heads. LOW-BUCK 302 FORD HEAD UPGRADE - YouTube SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. Generally expect with a good cam, intake, roller rockers and a good ignition system to see around 300-350 max rear wheel horsepower, depending on what type of dyno you use. Install a set of 1.7:1 roller-tipped rocker arms on the heads. I got rid of the carburetor and went with a F.A.S.T. Gt40 heads/intake from a jy explorer, leave the . Even with a stock Mustang 5.0 cam makes good power. The action you just performed triggered the security solution. GT-40 heads HP increase | Mustang Forums at StangNet Step 2. Because its all been done time after time after. Thank You. Free shipping for many products! But the part about a cam replacement possibly being a labor intensive undertaking is correct. We know what you're thinking--only two-tenths from an extra 45 hp? I'm an old school guy (289 in 65 mustang), and I'm just looking into the new 5.0 engine (roller cam) stuff recently.
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302 with gt40p heads horsepower