302 with gt40p heads horsepower302 with gt40p heads horsepower

And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. Assuming this will be a daily driver engine, a short duration camshaft, especially when combined with a four-barrel dual plane intake manifold and headers, will deliver extremely snappy throttle response and the whole combination will increase the torque and peak horsepower by somewhere in the neighborhood of 20 to perhaps 35 horsepower. 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. 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! If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. Everything fits, use the stock rockers and pushrods. Once the headers are in place, then you can consider if you still want more power. The Fora platform includes forum software by XenForo. You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. 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. 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:?:!?!?!? 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! T5z and 3.89 9" TL rear. (Please note these are not GT40P Explorer heads). Find many great new & used options and get the best deals for FORD GT40p 4 BAR HEADS IN GOOD CONDITION w/ONE BOLT BROKEN at the best online prices at eBay! check out the. If you have a early 351W ie pre 76 it probably . Holten runs the factory fan, but he had removed it when he ran the 12.63. Install a set of 1.7:1 roller-tipped rocker arms on the heads. For this reason, we're not sure what kind of boost the GT-40P heads will give. 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. 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. If I get different urges later, Ill pursue those then. This engine will be good for your 65 Mustang. I was looking at putting on the GT40P heads on. You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. Obviously, tuneups will vary. $169.50. 68 XR7 & 68 M-100. Those heads were unported and had stock valve sizes! The spark plug issue is almost a non-issue. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. Its NA but makes use of AFR heads and some other aftermarket goodies. The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. I'd much rather be able to drive it at 8 or 9/10s of what it can handle. 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. In less than an hour, we were ready to test. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. Calculated compression to 9.8:1. I had a set of 69 302 heads I ran for a while . The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. The later model distributors had a different diameter shaft than the earlier ones. He'll have to get a gear for his distributor. This one added another 10 degrees of duration over the smaller Voodoo cam, along with 0.020 inch more intake valve lift. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. people can stop saying that adding aftermarket cam with stock heads is a waste of time. Yea. We've already been motivated to put this engine in a buddy's Mustang. 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. Just got through porting one of my gt40p heads today. 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. Dec 8, 2011. Maybe I'll think about a cam swap? For a better experience, please enable JavaScript in your browser before proceeding. What did the heads flow? Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. 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 PTP Engineering front suspension and 25540R17s all around. T5 with 3.73s. $700.98. I must agree with Jeff Smith. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. A forum community dedicated to Ford performance owners and enthusiasts. 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. This is just a quick overview of the changes that need to be done. The HP DIFF column on the far right lists the horsepower difference between Test 1 and Test 3. This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons. Save narve00 If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. SBF engines are modified constantly. You gave me the info I was looking for, and I really do appreciate it. The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. Ive been building ENGINES for 40+ years. I went to a couple in Tucson and almost all the Ford vehicles that came with a 5.0 had the heads missing. 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. Free shipping. Because its all been done time after time after. 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. 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. Slover primarily focused on the exhaust side of the GT40P heads. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. Click to reveal Along with the heads, we used MAC headers for GT-40P heads. Stock valve sizes? With the engine reassembled, we boxed up our second camshaft and headed for Westech's dyno. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. K.S. It runs smooth but seems lazy. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. 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. this head is complete with new 1.837 int valves and 1.536 exhaust valves. - I have a 1989 f150 with a 302 5 spd. 69-70 302 heads (the ones with the heart-shaped combustion chamber) Any early 289 heads for the chamber size (but you'll have small ports & valves w/all that CR) Flat Ernie, Aug 27, 2011 SHARE POST #8 fordfan289 Member from indiana correct me if Im wrong but cant you use 351c heads and get the same thing as a 302 boss. As with all head installations, check piston-to-valve clearance before final startup. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. Manual trans. 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. GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . OR you could put your automotive journalistic skills in motion by reporting on the many new modern components available for the latest generation 351 Cleveland. Check my post above. The rest went very smoothly, and we reused the stock lifters and suffered no ulcers worrying about breaking in the cam. This will cost additional money but is still worth it, in our opinion. JavaScript is disabled. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . You need to check. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. We heated the bottle to 950 psi and hit the button at 4,500 rpm. 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 kit offers adjustable power from 50 to 250 hp with a simple jet change. Now we know why Dennis Hilliard of Central Coast Mustang is so high on these heads. All manufactured using advanced CNC technology for the extreme durability and precision required of the modern canted valve Ford Small Block at power levels around the 1000 mark reached during recent competitions at the EMC and at the strip. 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. But dont think that adding a bigger camshaft will make more power. This is what I recommend to everyone who is doing a budget 5.0 build. We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. 69.90.139.244 This is not a criticism but instead consider it to be more of a heads-up. Shop by category. Rowe studied engineering, philosophy and American literature at Central Florida Community College. '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 Joined: Sun Mar 15, 2009 9:31 am. The reason for this is that we're actually replacing mildly worked E7TE heads. Cant wait to try um out. Not sure how they would mate up to your existing exhuast, but otherwise they should work. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. 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. 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. Your email address will not be published. Related Resources Mustang Generation Nicknames: What Do They Mean? You keep stock drivability, and stock gas milage if you can stay out of boost. Well offer one as an example. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. Posted on May 07, 2014 by promarengine. Learn how your comment data is processed. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. Because of this, your tuneup will probably need to be modified. Ill do springs and a moderate cam and go for a good, dependable power plant. I turned it because it was tired when I got it. 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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. All this is worth it. 1979 Indy 500 Pace Car. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. How much HP and torque do you think I. Your IP: Mar 23, 2004. Weiand 7515 xcellerator intake. Its always refreshing to see a FORD getting a little face time in your column, even if its a tired 302 with no great expectations of setting the world on fire when the dust settles. 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. They almost seem like flywheel numbers rather than RWHP numbers. Over $2050 for the 165/185 renegades. Assorted screwdrivers, pliers and vise-grips. With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. i'd love to use these heads,. 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. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! Pride is built, in your garage, with your two hands. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. We need a build on a 400+ hp 302/6 build. This is an older thread, you may not receive a response, and could be reviving an old thread. This test went so well that we were eager to see what the slightly bigger cam would do. 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. Yep my **** is coming apart again Isnt life great! I have a 5.0 from a 1992 Mustang in my 65. Instructions on porting the GT-40p heads here. Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. Just make sure it is a roller 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. If you know him, ask him. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. . Keep in mind that swapping camshafts is a fairly extensive effort. Boy, were we surprised with the results. These cast piston short-blocks are not quite as good as the forged piston 5.0L that came in Fox-body Mustangs, but the GT40P heads flow much better than earlier 5.0L heads. The asterisk HP differences are calculated using Test 1's 294-hp peak. 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. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. We know what you're thinking--only two-tenths from an extra 45 hp? #1:::Throw out all your Magazines that suggest what to do! I don't need tons of power to enjoy the car. 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. Even with a stock Mustang 5.0 cam makes good power. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). You could run a thinner head gasket as well. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. JavaScript is disabled. We then dyno'd the car without the fan to get some consistency and were rewarded with a peak of 316 hp at 5,500 rpm, and 348 lb-ft of torque at 4,000 rpm. The best thing to do would be to use a specific break-in oil for the first 200 to 300 miles of use to reduce the change of a potential problem with undue wear. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. BONUS TEST-FOUR DIFFERENT 302 INTAKES.. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. What would be the best cam and springs to use for these heads in a 302 Windsor? Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! The tube headers showed a gain of almost 100 hp! 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. (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. They fill that spot between power and budget. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. 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. Here a comparison of different heads on a 302: I'm very happy with my GT40P. We decided on a Powerstar kit from Nitrous Supply, owned by our good friend Mike Thermos, who was one of the original nitrous kit suppliers back in the early '80s. That's an improvement of 22 hp over Test 2. First, adding headers will improve power on the existing combination. Never not once have I ever seen a SBF rod bolt create a failure. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. A forum community dedicated to Ford Mustang owners and enthusiasts. I guess someone could just do a basic valve job and throw on the GT40 upper/lower intake for a cheap HP boost. that is a healthy budget deal. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. When combined with modern power-makers, such as nitrous, the 302 is more than capable of producing 400+ horsepower for little more than the cost of a stock engine rebuild. Also, the spark plug angle makes it a pain. LOW-BUCK 302 FORD HEAD UPGRADE Richard Holdener 239K subscribers 189K views 2 years ago WESTECH PERFORMANCE GROUP WHAT'S IT WORTH? Torque on the other hand isnt something to write home about. 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. THANKS VERY MUCH! Win or lose, if you buy the ticket you must take the ride. The "P" heads flow better. HiPo manifolds and Ill be good. Can I run the new cam with the same roller hydraulic lifters or do I have to change the lifters too? 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. 1.7 shaft rockers and beehives. just curious. 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. For a better experience, please enable JavaScript in your browser before proceeding. 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.

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