302 with gt40p heads horsepowermost awkward queer eye moments

If I get different urges later, Ill pursue those then. Your IP: If you're not a header kind of guy, the repro 289 HIPO manifolds bolt up to the GT40P heads with plenty of spark plug room. Supercharging GT40p heads | Modded Mustang Forums All this is worth it. The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. 950.00 us a set and will ship . There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Gt40p heads - FourEyedPride.com He'll have to get a gear for his distributor. You can use the stock roller lifters with any size cam you want. The Fora platform includes forum software by XenForo. This pushed that little Ford to a peak horsepower of 503, and that was where we stopped. Going from your heads to the GT40p heads will bump your compression by about a point.so hello bottom end torque. 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. After we installed the heads and with the fan off, he ran a 12.46 at 107.9. 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. What you are trying to do is to increase the amount of airflow through the engine in order to make more power. 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. The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. Here a comparison of different heads on a 302: I'm very happy with my GT40P. They fill that spot between power and budget. I got lucky and found a complete Explorer GT40P engine online. Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. ford 302 sbf gt40p v8 cast iron complete cylinder head and head bolts and head gasket set. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New GT40P heads, what kind of performance do they give? After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. 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. They work, but present their own challenges. 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 messed with the timing, its at 35* total . A forum community dedicated to Ford Mustang owners and enthusiasts. Over $2050 for the 165/185 renegades. Ask Away! with Jeff Smith: Camshaft and Cylinder Head Recommendations 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . The GTp heads are like GT 40's with smaller combustion chambers and the spark plugs are relocated for a more efficient burn. FORD GT40p 4 BAR HEADS IN GOOD CONDITION w/ONE BOLT BROKEN For a better experience, please enable JavaScript in your browser before proceeding. 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. The fix: basic power upgrades for a sluggish 302 A bit of info for those looking to build 300+hp 5.0L/302s For the most part 302 heads and 351W heads are the same. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. I have a 432 HP non Hi Po 289 I built. I recall having an absolute blast with my old K-code coupe back in the day. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. 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. I am working on a set of iron GT40s hoping it goes faster. I view the GT40P heads similar to Granada brakes. When I purchased my "brand new" set of GT40P's, I bought them from an Mustang specific machine shop that used to exist called Central Coast Mustang. Do not ever, ever think about using the tube type manifolds. Calculated compression to 9.8:1. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. The reply has so many assumptions that I cant even assume to know the answer. (its not their engine) That's a good combo in my book. Dec 8, 2011. ***Most important is theStupid question is the one that was never asked!*** Well that article just got me very ancy, I want these heads!! Pretty sure that was name, but I could be wrong. Be careful, I was once bitten by one of those reptile engine builders. You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. 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. This will follow the guideline of a 1.6 rocker baseline and factory bottom end 79-95 related 5.0L Mustangs only. 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. If you dont feel comfortable doing this higher a pro. These are some of the pictures I have showing the Explorer manifolds. The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. Ill do springs and a moderate cam and go for a good, dependable power plant. AFR 165cc 58cc Heads. Hey Motorheadty,Like your comments,question for ya,I have a 92 convertible,just bought a 5.0 out of a 94 gt that was just freshened up top end,gt40p heads w/new springs etc for the new E303 cam,new FRP roller lifters,Crane 1.7 rockers,hardened push rods,double roller timing set,all put on a bottom end w/104000 miles,needless to say previous owner pulled said engine after 800 miles and now building a 351,I pulled engine down my machinest,putting forged internals in and bolting everything back together,I want to run about a 150 shot N2o,and iam going carb,wondering which intake would be best w/the 150 shot,heard that dual planes might not be the way to go? 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. Good Luck. - I have a 1989 f150 with a 302 5 spd. 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. JavaScript is disabled. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. While we've seen engine dyno tests performed with GT-40P heads replacing factory E7TE castings and resulting in a boost of more than 25 hp, we have reluctantly set our horsepower gain goal at 25 ponies, as well. 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. Build Thread 1965 Fastback Project "Racesteed". The combination of this cam with your intake and headers will produce a very nice street engine. 99 Explorer engine (302) with GT40P heads - Ford Muscle Cars Tech Forum . A mild porting with gasket matching will be very good. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. They almost seem like flywheel numbers rather than RWHP numbers. Very true about finding them at the local yards. T5z and 3.89 9" TL rear. I may do some port matching and a little cleanup, otherwise just a set of springs and cam and see what I have. However there are plenty of factory heads that with the help of an experienced machine shop can be great. Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend Mustang Cylinder Head & Camshaft Guide (79-95) - LMR That's an improvement of 22 hp over Test 2. Motor is going into a Ranger. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. HiPo manifolds and Ill be good. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. These are a great head but do need some machining mods to make they really work well. 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. Budget 300HP 302 Build Your email address will not be published. There was an article in Hot Rod magazine in the mid '80's where Jon Kaase was developing 351w packages. This time around, we chose a shining example of this junkyard art form. This is just a quick overview of the changes that need to be done. But dont think that adding a bigger camshaft will make more power. Just got through porting one of my gt40p heads today. A forum community dedicated to Ford performance owners and enthusiasts. 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. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. 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 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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. Good on ya Jeff Smith. 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. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. by travis Sun May 03, 2020 8:33 am. The 2 heads are about the same when looking at the numbers with the GT40p heads having a slight edge. For the first test, we were reusing the stock Explorer cam, so the engine didn't need any break-in time. Instructions on porting the GT-40p heads here. I had those on my car before I upgraded and they were nice heads. For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. The older pushrod engines just dont offer the same kind of power potential for their displacement and it all has to do with cylinder head flow. Ford Factory 5.0 Performance Cylinder Heads. Without changing the stock pistons. 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. people can stop saying that adding aftermarket cam with stock heads is a waste of time. I'd much rather be able to drive it at 8 or 9/10s of what it can handle. Performance & security by Cloudflare. 1986 Short block with notched pistons. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. Because of this, your tuneup will probably need to be modified. Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. JEGS High Performance. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. 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. Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. A trip to Orlando Speed World provided us with updated quarter-mile times. 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. Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. The Fora platform includes forum software by XenForo. Both swaps made more sense when parts were readily available at the bone yard for cheap. Im new and Im 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. Free shipping. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. I've got gt40p heads for it I'll be running, and can't afford better . 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . check out the. 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. I have been working on Fords for 40 years and I have experimented with a few tricks of my own. Check my post above. What would be the best cam and springs to use for these heads in a 302 Windsor? 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. Sponsored. 302 GT40 Dyno Results - FourEyedPride.com Yes- thank you. (Image/Harrison Creamery). You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. The only way to really make more power is to go with a stroker kit, blower and/or heads. Every thing he tells you on this site is true. Joined . They also have emissions legal heads as well. 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. Eldelbrocks Air Gap intake manifold should work well with the combination. Install a set of 1.7:1 roller-tipped rocker arms on the heads. Buy the lifters for peace of mind now and hopefully for the duration. The rest went very smoothly, and we reused the stock lifters and suffered no ulcers worrying about breaking in the cam. 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. GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . Yea. K.S. This test went so well that we were eager to see what the slightly bigger cam would do. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. FORD GT40p 4 BAR HEADS IN GOOD CONDITION . You keep stock drivability, and stock gas milage if you can stay out of boost. As with all head installations, check piston-to-valve clearance before final startup. I got a GT40P off the assembly line years ago. could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? Over $2050 for the 165/185 renegades. We know what you're thinking--only two-tenths from an extra 45 hp? If you have a early 351W ie pre 76 it probably . For this reason, we're not sure what kind of boost the GT-40P heads will give. Where they differ is the combustion chamber size. Have fun, be safe, enjoy. HAD '82 GT monochromatic (red).black cloth HAVE I guess I had it backwards, sorry about that, didn't mean to spread misinformation. These heads have been remanufactured using refaced reclaimed Factory Valves. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. 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. Well offer one as an example. For 2018, the Coyote makes 460 hp. this head fits years 95-01 explorer mountaineer mercury mountaineer . We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. The asterisk HP differences are calculated using Test 1's 294-hp peak. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. For all of us interested in Gt40p heads. Manual trans. You gave me the info I was looking for, and I really do appreciate it. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. 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 have a very good running stock 1981 302 in a F100 short box. Mac and Ford Motorsport both make a GT40P spacific header. Or, you could invest in a new set of heads that would also do the same job but you can expect to spend quite a bit more money. How much HP and torque do you think I. 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. Not looking for crazy HP. So . Thanks. He'd be the best source. Application Fits 1979-95 Mustang 302/351 w/ OEM Small Block Ford Heads GT40Ps have 58cc. Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. Ive been building ENGINES for 40+ years. (Please note these are not GT40P Explorer heads). These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. 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. Really hurt too. You could run a thinner head gasket as well. If you know him, ask him. Shop by category. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. Someone does make the Tri-Y's headers for the early Mustangs using the "P" heads. The Fora platform includes forum software by XenForo. Choose a cylinder head before you install the pistons. how much HP and torque? Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. I have a 5.0 from a 1992 Mustang in my 65. Aftermarket headers, such as those made by Hooker, BBK and Competition Engineering, are better and are just as easy, if somewhat more expensive, to procure used. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . 351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum Cast iron GT40Ps as cast flow better than non-Ps due to revised plug location/angle. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. A bone stock 2bbl early 351w with stock replacement forged pistons (9.0 compression) and dyno headers made 211 Hp . Hey all, I'm working on building a 302 with my gt40p heads. They suffered from poor aftermarket support up until about 15 years ago when it really came on strong. I had a set of 69 302 heads I ran for a while . Those are really good numbers. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. The later model distributors had a different diameter shaft than the earlier ones. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. Click to reveal These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. The dyno recorded a peak horsepower reading of 489 hp, but the air/fuel ratio was slightly on the rich side at 11.5:1, so we increased the nitrous jet to a 61 and hit the button again. gt40p heads on a 289 in a 66 | Vintage Mustang Forums $139.99. In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. Once the headers are in place, then you can consider if you still want more power. Slover primarily focused on the exhaust side of the GT40P heads. Choosing pistons to complement GT40P heads - MustangWorks.com Sure, you could race-port the existing E7 castings, which many have done, but then you're putting quite a bit of change into stock heads. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel.

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