302 with gt40p heads horsepower

302 with gt40p heads horsepower

many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. That's a good combo in my book. A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. I recall having an absolute blast with my old K-code coupe back in the day. 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. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. Stock valve sizes? 97% Positive Feedback . Ask Away! with Jeff Smith: Camshaft and Cylinder Head Recommendations JavaScript is disabled. Joined: Sun Mar 15, 2009 9:31 am. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. Not looking for crazy HP. 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. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. Ported Hurricane Single Plane and custom 750 HP. 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. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. 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. Related Resources Mustang Generation Nicknames: What Do They Mean? Through Central Coast you can have the heads fully prepped for your combination. The only way to really make more power is to go with a stroker kit, blower and/or heads. 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. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. For a better experience, please enable JavaScript in your browser before proceeding. Commonly referred to as Explorer heads, GT-40P iron castings are found on current 5.0-equipped Explorers. 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. 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. ford 302 sbf gt40p v8 cast iron complete cylinder head and head bolts and head gasket set. Yes- thank you. Theres many options available for a little more power. 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. This is a function of the somewhat wider lobe-separation angle of 112 degrees. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. Like I said lots of options. As with all head installations, check piston-to-valve clearance before final startup. GT40, GT40P, would be great factory 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. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. A COMP hydraulic roller cam we found works well with this combination. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Yep my **** is coming apart again Isnt life great! PTP Engineering front suspension and 25540R17s all around. Ha! He'll have to get a gear for his distributor. If you dont feel comfortable doing this higher a pro. 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. Car Craft mag. Common sense would suggest that with the heavy lifting complete and the old cam removed, by not installing the new roller lifters along with the camshaft could be asking for the possibility of trouble just a few thousand miles down the road. Check my post above. Worst AFR 165 dyno ever | Factory Five Racing Forum Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. Torque on the other hand isnt something to write home about. I got lucky and found a complete Explorer GT40P engine online. GT40P heads? how hard to put on? how much HP and torque? We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. Let us explain. 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. First, adding headers will improve power on the existing combination. 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. $139.99. This website is using a security service to protect itself from online attacks. 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). Also, the spark plug angle makes it a pain. 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. 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. No-option stripper- I like strippers. Be careful, I was once bitten by one of those reptile engine builders. I turned it because it was tired when I got it. 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 Not sure how they would mate up to your existing exhuast, but otherwise they should work. 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 . Works on all factory cast iron E7, GT40, and GT40P cylinder heads! 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. The GTp heads are like GT 40's with smaller combustion chambers and the spark plugs are relocated for a more efficient burn. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. 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. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. That's more than enough to feed a power-brake booster. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. These engines came with the GT40P head, which even with its small valves, offers really good performance. The only one that's close, is #7. GT-40 heads HP increase | Mustang Forums at StangNet Because of this, your tuneup will probably need to be modified. Test 1: 750-cfm carburetor, dual-plane intake manifold, and stock camshaft. Step 1. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. A mild porting with gasket matching will be very good. I'm also have the regular GT40 heads on my current build. Instructions on porting the GT-40p heads here. 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. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. And have discovered something that I dont think anyone else knows. I'm wondering how these heads will interact with the paxton 1220 sl supercharger I'm trying to put on. In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. 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. Thank You. Everything fits, use the stock rockers and pushrods. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . A trip to Orlando Speed World provided us with updated quarter-mile times. Required fields are marked *. These are some of the pictures I have showing the Explorer manifolds. Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. However, when we dyno'd the car before installing the GT-40P heads, the fan was on the car. I have to agree, the GT40P heads flow better than the GT40 iron heads. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. K.S. Ive bought wrecking yard SBFs and put 20 lbs of boost to them and spin them to 7000 and made 500 HP with several of them. 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. Shop by category. Add 40 to 70 HP to your 302 yourself - Factory Five Racing Forum 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! I plan on running a AFM b31 cam too which has relatively small duration for the intake valve. Slover primarily focused on the exhaust side of the GT40P heads. It took him and yours truly eight hours from start to finish, using air tools and a lift to gain access to the header flanges. 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. I'll save the effort and lighten my front end by 50# with aluminum. We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. 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. But what we were most impressed with was the solid gain in torque over the smaller Voodoo cam from 3,500 and up. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. 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. The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. Best of all, no machining is required to install these on your stock cast iron heads! We heated the bottle to 950 psi and hit the button at 4,500 rpm. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. This one added another 10 degrees of duration over the smaller Voodoo cam, along with 0.020 inch more intake valve lift. But don't think that adding a bigger camshaft will make more power. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. There are caveats to this plan, however. 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. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. $169.50. I have been working on Fords for 40 years and I have experimented with a few tricks of my own. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New Smith began writing for Car Craft magazine in 1979 and became editor in 1984. Building 400hp Into A 5.0L Small-Block Engine - MotorTrend Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. How to Build a Cheap Drag Racing 302 Ford Motor | It Still Runs Im now thinking of adding a cam to match the carb. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. Then why did you port the heads and how do you know if you made an improvement. 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. Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend built one using a 91' HO short block with a set of AFR 165 heads, Weiand . Compare. I don't need tons of power to enjoy the car. If you can find individual flanged headers like the obsolete MAC headers had, those worked really well with GT40P's. That's fantastic for the minimal investment we made. Your IP: You should be able to get away with a 150 to 200 horsepower shot later, but it's best to start out small and work up. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . You can have your current 28 oz rebalanced to 50. A forum community dedicated to Ford Mustang owners and enthusiasts. You can have your current 28 oz rebalanced to 50. A LOT of them do it these days. I have a 66 mustang with its original untouched 289 with over 140 k on it that Ive been running a blow thru turbo making 14 lbs of boost on for the last 5 years and its never given me a problem. Anyways, I know the gt40ps will bump . SBF engines are modified constantly. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. They almost seem like flywheel numbers rather than RWHP numbers. I love my setup and it is very strong engine. 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. 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. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. Step 2. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. I have a 5.0 from a 1992 Mustang in my 65. But dont think that adding a bigger camshaft will make more power. 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. Well offer one as an example. #1:::Throw out all your Magazines that suggest what to do! GT40P heads, what kind of performance do they give? - FourEyedPride.com 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. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. I have managed to get 402 horse power from a 289 hipo natural aspirated. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. 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. 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. 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! The "P" heads flow better. Max hp out of gt 40 heads | Mustang Evolution Forum 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. Posted on May 07, 2014 by promarengine. I've not seen a set of longtubes that have an issue with GT40P's, either. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. Some ideas never go out of style. MAC is the only manufacturer of these headers, and the parts we installed fit like a glove with no problems whatsoever. fordfan289, Aug 27, 2011 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. 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? It's a classic move we've pulled off many times. This is not a criticism but instead consider it to be more of a heads-up. Nudge us with emails, and we'll make it happen. 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. Win or lose, if you buy the ticket you must take the ride. This is an older thread, you may not receive a response, and could be reviving an old thread. GT40P heads, what kind of performance do they give? I have a very good running stock 1981 302 in a F100 short box. GT40s have 64cc chambers. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. The hardest part of swapping the cam was just getting the timing cover off and back on again. Most all long tubes come out far enough to clear and other short tube headers will work but there is clearance issues on two of the cylinders. AFR 165cc 58cc Heads. Eldelbrocks Air Gap intake manifold should work well with the combination. Buy the lifters for peace of mind now and hopefully for the duration. 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. this head fits years 95-01 explorer mountaineer mercury mountaineer . However there are plenty of factory heads that with the help of an experienced machine shop can be great. He has worked as a tractor-trailer driver and mechanic, a rigger at a fire engine factory and as a race-car driver and builder. Well assume it is a 5.0L with stock heads. 950.00 us a set and will ship . Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). The Fora platform includes forum software by XenForo. When building an engine there is a lot to take into consideration. GT40Ps have 58cc. 68stang351 Founding Member May 16, 2002 850 Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc Mustang Cylinder Head & Camshaft Guide (79-95) - LMR The engine was only rated at 215 hp, but it at least had 9.0:1 compression. Now he serves as a regular contributor to OnAllCylinders. A forum community dedicated to Ford performance owners and enthusiasts. For 2018, the Coyote makes 460 hp. 1983 Mustang G.T. Choosing pistons to complement GT40P heads - MustangWorks.com When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Even with a stock Mustang 5.0 cam makes good power. T5 with 3.73s. For the first test, we were reusing the stock Explorer cam, so the engine didn't need any break-in time. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. Joined . The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. 351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. Junkyard Gt40p Heads-add 30+ Hp to Your 5.0l (For Free?) 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. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. Now we know why Dennis Hilliard of Central Coast Mustang is so high on these heads. The reason this new generation of Ford engines make a ton more power is they also enjoy fantastic cylinder heads and four valves per cylinder. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. Compare. Install a set of 1.7:1 roller-tipped rocker arms on the heads. They fill that spot between power and budget. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. I have a 432 HP non Hi Po 289 I built. With no other changes we gained 25 hp using factory iron heads. #3::: Do your homework,get quality parts,dont skimp. Boy, were we surprised with the results. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. That said there are some better aftermarket options for heads also. We've already been motivated to put this engine in a buddy's Mustang. This will keep you from dropping your overall static compression ratio and losing power. Their weak point is that the rotator used on the exhaust valve is very thick. i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. The Fora platform includes forum software by XenForo. Supercharging GT40p heads | Modded Mustang Forums Every thing he tells you on this site is true. Cant wait to try um out. this is the price for one head. 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. The MPH was there to run a little better but the local track is about terrible. These are Ford iron GT-40P heads. What would be the best cam and springs to use for these heads in a 302 Windsor? 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. Mild Build Gt40p Really hurt too. For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. I ran the Speed Pro L2488 pistons and it had me around 9.9 compression with a .041 head gasket, Now I had GT40 heads milled .020 and so that's just a guess on the CC. 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. Location: Re: Stock Ford 351W 4bbl dyno numbers. . I'll prob take a trip up there this weekend after scavenging the junkyards, thanks a million. You can find them on later model Mercury Mountaineers and several other Ford SUV applications. this head is complete with new 1.837 int valves and 1.536 exhaust valves. 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. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! 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. You can use the stock roller lifters with any size cam you want. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . 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. the springs are new stock oem ford. i'd love to use these heads,. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. Yea. Not bad for off the shelf parts and a stock shortblock. I am very happy too. If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. Calculated compression to 9.8:1. What Are The GT40 & GT40P Heads? - LMR.com 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.

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