302 with gt40p heads horsepower

Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. Win or lose, if you buy the ticket you must take the ride. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. I had those on my car before I upgraded and they were nice heads. We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. A forum community dedicated to Ford performance owners and enthusiasts. This is a function of the somewhat wider lobe-separation angle of 112 degrees. The hardest part of swapping the cam was just getting the timing cover off and back on again. Im now thinking of adding a cam to match the carb. Anythoughts? Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at 0.50 . .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . Joined: Sun Mar 15, 2009 9:31 am. 289 or 351 heads on a 302 advantage? | The H.A.M.B. Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. $169.50. Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. 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. Its increase while significant is still only about that of a decent 351 w, hi im building a nastalgic car so im not going to drag race it but it must go ok ive got a 302 windsor basicly recoed stock but i want to run tunnel rams to go with the the3am would like to put choppy cam and replace the heads any ideas would be much apprecited thankyou, What is the stock head cc of a 1992 f150 302 windsor. Everything fits, use the stock rockers and pushrods. SBF engines are modified constantly. Cloudflare Ray ID: 7a2e2d95dedea1e4 I am very happy too. This is a common mistake with first-time cam buyers who dont necessarily appreciate that the cam is just one component of the overall engine package. We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. In less than an hour, we were ready to test. Dec 8, 2011. I'm wondering how these heads will interact with the paxton 1220 sl supercharger I'm trying to put on. Upgrading Fox Body Cylinder Heads - AmericanMuscle.com We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. check out the. GT40P heads, what kind of performance do they give? - FourEyedPride.com You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. What Are The GT40 & GT40P Heads? - LMR.com GT40 Heads On A 289? | Ford Muscle Cars Tech Forum FULL DYNO RESULTS. Thanks. What did the heads flow? 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. never messed with the timing, its at 35* total . Good on ya Jeff Smith. These are Ford iron GT-40P heads. If you go with a diffrent cam, make sure you change springs, The Trick Flow kit comes with everything for around $130. 1983 Mustang G.T. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. As a final goal, we decided to bolt on a simple nitrous system and see if we could push this little small-block Ford to make some real power. 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. Because of this, your tuneup will probably need to be modified. 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. this is the price for one head. 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 looking for crazy HP. The only one that's close, is #7. A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. 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. The action you just performed triggered the security solution. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - anyone have experience with GT40P heads on a 92 351W - ive got a 92 F250 with a 351W that needs a pretty serious rebuild. 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. If the head bolt holes are 1/2" or slightly larger, ARP makes the washers and can be sourced from Ford Racing or ARP through a speed shop or Summit, Jegs and PAW among others. First, adding headers will improve power on the existing combination. The fix: basic power upgrades for a sluggish 302 Where they differ is the combustion chamber size. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR Obviously, tuneups will vary. Since the engine is nearly stock, we would want to choose a relatively mild camshaft with somewhat more lift and duration than stock, but again not going too aggressive. Ask Away! with Jeff Smith: Camshaft and Cylinder Head Recommendations This website is using a security service to protect itself from online attacks. (Please note these are not GT40P Explorer heads). Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. 1983 Mustang G.T. GT-40 heads HP increase | Mustang Forums at StangNet Required fields are marked *. There are too many variables to add to this regarding aftermarket stroker kits or components. Gt40p heads - FourEyedPride.com He'd be the best source. 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. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. We need a build on a 400+ hp 302/6 build. Slover primarily focused on the exhaust side of the GT40P heads. The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. If you're running a stock cam, 1.7 rockers will work perfectly. +1 I would go with the regular GT40 heads. I would like to know what heads, cam and intake manifold combination to use for the most HP I can squeeze out of that motor. The 302 uses smaller 7/16" head bolts and your "P" heads may or may not require the step washers. Because its all been done time after time after. However I think the opportunity window is slowly closing. 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. i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. Weiand 7515 xcellerator intake. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. Learn how your comment data is processed. Compare. These timeslips are from 1280' above sea level. For a better experience, please enable JavaScript in your browser before proceeding. The Fora platform includes forum software by XenForo. 302 heads on 351w | ClassicBroncos.com Forum . However there are plenty of factory heads that with the help of an experienced machine shop can be great. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. Over $2050 for the 165/185 renegades. The heads got a 3 angle valve job, new valves from speed-pro and all the valve train was from crane that matched the current hydraulic cam. No-option stripper- I like strippers. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. 1979 Indy 500 Pace Car. Free shipping. any input is apprecciated:smartass: Thank you for the info, if all I have to worry about is the plugs then I'm in good shape hahaha. You gave me the info I was looking for, and I really do appreciate it. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. . GT40 vs GT40P: Who has Smaller Chamber Volume ! More compression 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). How to Build a Cheap Drag Racing 302 Ford Motor | It Still Runs Torque on the other hand isnt something to write home about. 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. how much HP and torque? You could run a thinner head gasket as well. Thank You. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. 68 Mustang GT/CS Highland Green, PS, PB & Console, C Code w/C4 & 3.55 8 rear, If you aren't using the GT40P's stock, with maybe a spring upgrade and valve job, they aren't worth it anymore. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Maybe I'll think about a cam swap? Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. If I get different urges later, Ill pursue those then. 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. If there isnt room without disassembling half the front clip on the car, then it might be easier to remove the engine and do the conversion that way. Yea. Because of this, your tuneup will probably need to be modified. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. Cant wait to try um out. I'd get the gt40 setup, and put an s trim on it. Location: Re: Stock Ford 351W 4bbl dyno numbers. I had a set of 69 302 heads I ran for a while . We also discovered some issues with the GT40P heads that required changes, so we added valves from Manley that eliminated the exhaust-valve rotators and allowed us to set the proper valvespring installed height. 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. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. Runs well. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. That's a 40 per cent increase in power from a simple head and cam swap, and one seriously happy Mustang owner! This kind of improvement may not seem like much, but the owner of our test car, Jamie Holten, runs in FFW Trophy Stock where three-tenths is a lifetime. 302 GT40 Dyno Results - FourEyedPride.com They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. Good Luck. A bit of info for those looking to build 300+hp 5.0L/302s I have a 432 HP non Hi Po 289 I built. I don't need tons of power to enjoy the car. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. The Fora platform includes forum software by XenForo. Gt40 heads/intake from a jy explorer, leave the . All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. Hey all, I'm working on building a 302 with my gt40p heads. 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. Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. Some ideas never go out of style. Click to reveal Shop by category. However, since Holten's car has an E303 cam, we didn't want the pistons and valves becoming too close, so we chose the 1.6 rockers. Have fun, be safe, enjoy. We've already been motivated to put this engine in a buddy's Mustang. They almost seem like flywheel numbers rather than RWHP numbers. We decided to test both ideas, so we ordered two roller cams from Lunati: a shorter-duration cam that would deliver decent idle vacuum and maybe make around 320 to 335 hp, and a longer-duration version that might push the horsepower up to perhaps 350 hp. HiPo manifolds and Ill be good. 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. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. Motor is going into a Ranger. timing and compression ratio with gt40p heads - Modded Mustang Forums AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. (A starter is a motor, windshield wipers use a motor,electric windows use motors) Any one uses that terminology in my shop will be corrected once, only once. Take the assembly to a machine shop to have it balanced and install it in the block. Ha! There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. 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. The heads that were used were also old C8 casting with 58cc chambers. Depends on the budget. We compare the GT40s to modern cylinder heads as well as other heads from the era. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. You didnt provide a lot of information about the engine itself, Im assuming its 85 or newer ( roller cam) May need a freshen up of the bottom end if compression is the issue. Can I run the new cam with the same roller hydraulic lifters or do I have to change the lifters too? You can email the site owner to let them know you were blocked. But the part about a cam replacement possibly being a labor intensive undertaking is correct. Your IP: Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend Rowe studied engineering, philosophy and American literature at Central Florida Community College. If they are cheap enough, take them anyway. gt40p heads on a 289 in a 66 | Vintage Mustang Forums This is needed for the steel roller cam. How to Get More Horsepower Out of a Ford 289 | It Still Runs 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 . Dyno results GT40P heads | Vintage Mustang Forums Yeah, except those. a) ain't early and b) aren't 289 heads. LOW-BUCK 302 FORD HEAD UPGRADE Richard Holdener 239K subscribers 189K views 2 years ago WESTECH PERFORMANCE GROUP WHAT'S IT WORTH? Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! Most of them are aware of what changes need to be completed. Test 3: Installed the larger Lunati camagain, no other changes. You didnt mention which cam you had in mind. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. Ford 302W / 5.0L History & Specifications - The Ranger Station Step 1. that is a healthy budget deal. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. HAD '82 GT monochromatic (red).black cloth HAVE VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. For a better experience, please enable JavaScript in your browser before proceeding. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. Pretty sure that was name, but I could be wrong. 351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum 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. The MPH was there to run a little better but the local track is about terrible. You'll also have to use your 289 timing chain cover since it has a hole for the oil dip stick and fuel pump. Never not once have I ever seen a SBF rod bolt create a failure. 97% Positive Feedback . The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. 302HO with gt40p heads | Mustang Forums at StangNet 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. With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . In an effort to preserve the history of the Early Fox Era, FEP covers the following vehicles: 79-86 Mustang and Capri, 84-86 Mustang SVO, 78-83 Fairmont & Zephyr, 83-86 LTD & Marquis, 80-88 Thunderbird & Cougar, 82-87 Continental, 84-92 Mark VII, 81-82 Granada. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. FORD GT40p 4 BAR HEADS IN GOOD CONDITION . Theres many options available for a little more power. I must agree with Jeff Smith. JavaScript is disabled. 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. 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. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system.

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