302 with gt40p heads horsepower

For a better experience, please enable JavaScript in your browser before proceeding. 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. Install a "wet" nitrous plate system (which carries both nitrous and fuel) onto the intake manifold and jet it conservatively for a 100 horsepower shot. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. The only one that's close, is #7. 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. 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. For the first test, we were reusing the stock Explorer cam, so the engine didn't need any break-in time. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. BONUS TEST-FOUR DIFFERENT 302 INTAKES.. - I have a 1989 f150 with a 302 5 spd. Everything fits, use the stock rockers and pushrods. 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. bmcdaniel, Feb 17, 2004 #7. v8maverick Member. I am working on a set of iron GT40s hoping it goes faster. What you are trying to do is to increase the amount of airflow through the engine in order to make more power. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. 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. 1983 Mustang G.T. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. I'll save the effort and lighten my front end by 50# with aluminum. Long tube headers are a terrific idea, but you need to open up the exhaust side. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. #2::: Get advice from a reptile engine builder with experience(first flag for me is when somebody refers to an ENGINE as a MOTOR! I love my setup and it is very strong engine. Sponsored. 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. Compare. This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. They almost seem like flywheel numbers rather than RWHP numbers. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. 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. The GT40 and GT40P cylinder heads are highly sought after, but how do they stack up against other cylinder heads, and is it worth it to upgrade the Fox Body's stock heads? The SUV indicated barely 120,000 on the clock, and after yanking the valve covers to judge the engine's condition, Tim Moore instantly made the decision to do the boneyard version of a smash-and-grab. Related Resources Mustang Generation Nicknames: What Do They Mean? Both swaps made more sense when parts were readily available at the bone yard for cheap. For 2018, the Coyote makes 460 hp. But what we were most impressed with was the solid gain in torque over the smaller Voodoo cam from 3,500 and up. Took me 7 hours to do one head.but they cleaned up real nice. The reason for this is that we're actually replacing mildly worked E7TE heads. FORD GT40p 4 BAR HEADS IN GOOD CONDITION . Without changing the stock pistons. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. Once the headers are in place, then you can consider if you still want more power. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. Anyways, I know the gt40ps will bump . REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. The heads that were used were also old C8 casting with 58cc chambers. The Fora platform includes forum software by XenForo. 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 reply has so many assumptions that I cant even assume to know the answer. Calculated compression to 9.8:1. Not looking for crazy HP. If you have a early 351W ie pre 76 it probably . A trip to Orlando Speed World provided us with updated quarter-mile times. are you twisted331 also? 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. You can use the stock roller lifters with any size cam you want. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. Even with a stock Mustang 5.0 cam makes good power. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. So I've got the motor and heads already for my maverick project. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. 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. I got a GT40P off the assembly line years ago. For the cherry on top of this Blue Oval desert, we bolted Mike Thermos' simple Powerstar plate nitrous system under the carburetor, installed the 140-hp jets (55 fuel and 55 nitrous), and used the trigger to retard the timing on the MSD ignition by 8 degrees. I'm running BBK un-equal length shorty's, and I'm able to get all the plugs in, tight, and all plug wires on. You can find them on later model Mercury Mountaineers and several other Ford SUV applications. Scorpion 1.6 roller rockers. 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. $139.99. That's more than enough to feed a power-brake booster. Assorted screwdrivers, pliers and vise-grips. Going from your heads to the GT40p heads will bump your compression by about a point.so hello bottom end torque. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. 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. Some ideas never go out of style. No-option stripper- I like strippers. We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. JUNKYARD GT40P HEADS-ADD 30+ HP TO YOUR 5.0L (FOR FREE?) Not sure how they would mate up to your existing exhuast, but otherwise they should work. Hey all, I'm working on building a 302 with my gt40p heads. However realistically, with the amount of money spent modifying the gt40p heads or even those older 289 & 351w heads, you could have even better performing aluminum heads. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. Gt40 heads/intake from a jy explorer, leave the . Best of all, no machining is required to install these on your stock cast iron heads! If we subtract the 20 hp that the fan is worth, we end up with a gain of 25 hp. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. This pushed that little Ford to a peak horsepower of 503, and that was where we stopped. But don't think that adding a bigger camshaft will make more power. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. 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. Build Thread 1965 Fastback Project "Racesteed". Not *as* good as the GT40p heads, but I'd prefer to not have to worry about exhaust fitment issues, or have a narrow range of what I can work with. Because its all been done time after time after. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. 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. 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:?:!?!?!? We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. 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. MAC is the only manufacturer of these headers, and the parts we installed fit like a glove with no problems whatsoever. 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. We gained 45 hp and 40 lb-ft of torque. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. Mar 23, 2004. 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. Go for it if you get them super cheap and can get headers/manifolds super cheap as well but otherwise I'd say it's a waste of time and money. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. 69.90.139.244 If you're running a stock cam, 1.7 rockers will work perfectly. Or just play it safe and let the fans ask away about another daring 5.0 TB bolt on or for an exciting surprise, do a LS______ fill in the blanks. I have managed to get 402 horse power from a 289 hipo natural aspirated. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . 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. 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. $700.98. I've got gt40p heads for it I'll be running, and can't afford better . 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? 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. Well offer one as an example. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. An aggressive cam will wake it up a bit. E303 Cam advanced 4 degrees. Runs well. how much HP and torque? check out the. In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. ***Most important is theStupid question is the one that was never asked!*** Boy, were we surprised with the results. 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. We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons. 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. 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. T5z and 3.89 9" TL rear. Limited header choice is certainly a challenge. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. A LOT of them do it these days. Install a set of 1.7:1 roller-tipped rocker arms on the heads. But the part about a cam replacement possibly being a labor intensive undertaking is correct. Yep my **** is coming apart again Isnt life great! Mac and Ford Motorsport both make a GT40P spacific header. 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. Ill do springs and a moderate cam and go for a good, dependable power plant. Enter your search keyword. No-option stripper- I like strippers. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Over $2050 for the 165/185 renegades. Holten runs the factory fan, but he had removed it when he ran the 12.63. T5 with 3.73s. Every thing he tells you on this site is true. This is a function of the somewhat wider lobe-separation angle of 112 degrees. 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. Here is my setup. 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. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. I think one of the finer traits of a true car guy, is the patience to put a prized car away and just let it sit for a while rather than selling it when life gets in the way. The spark plug issue is almost a non-issue. We know what you're thinking--only two-tenths from an extra 45 hp? They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. This needs to be removed and different exhaust valves, retainers, and valve springs added to turn this into a decent street head. The car weighs #2835 with driver. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . Shop by category. I'm also have the regular GT40 heads on my current build. 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. Shop by category. This time around, we chose a shining example of this junkyard art form. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. FULL DYNO RESULTS. The later model distributors had a different diameter shaft than the earlier ones. +1 I would go with the regular GT40 heads. Not to mention, they will run circles around GT40P's out of the box. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I got rid of the carburetor and went with a F.A.S.T. You can have your current 28 oz rebalanced to 50. These engines came with the GT40P head, which even with its small valves, offers really good performance. You'll also have to use your 289 timing chain cover since it has a hole for the oil dip stick and fuel pump. Buy the lifters for peace of mind now and hopefully for the duration. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. at the crank. 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. Joined: Sun Mar 15, 2009 9:31 am. Learn how your comment data is processed. that is a healthy budget deal. It's a classic move we've pulled off many times. Over $2050 for the 165/185 renegades. 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. Would have liked to see a comparison done on the same short block using a set of decently-ported early non-Thermactor iron heads Tracy Blackford, 65 Mustang FB, 331 built with 289 H beam rods and 383W piston, 282S cam, self ported '70 351w heads, Dougs Tri-Y headers. 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 had a set of 69 302 heads I ran for a while . What would be the best cam and springs to use for these heads in a 302 Windsor? THANKS VERY MUCH! Using the manufacturer recommended springs for your camshaft are a safe bet. A forum community dedicated to Ford performance owners and enthusiasts. The Fora platform includes forum software by XenForo. The hardest part of swapping the cam was just getting the timing cover off and back on again. 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. The GT40P heads flow a lot better than stock 351 heads. Because of this, your tuneup will probably need to be modified. 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. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . You just want to keep it out of detonation. 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. Again, assuming this is a nearly stock 5.0L with stock heads, the Weiand Street Warrior dual plane intake and 600 cfm carburetor, its important to not become overly aggressive and choose a big camshaft. A COMP hydraulic roller cam we found works well with this combination. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. 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. Nudge us with emails, and we'll make it happen. 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. However there are plenty of factory heads that with the help of an experienced machine shop can be great. If I remember right, non of the GT40P's (later models) had the thermactor smog provisions. If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. I turned it because it was tired when I got it. 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. 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. 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). Im now thinking of adding a cam to match the carb. On slicks the car went some low 7.70s right at 90mph. With the tuning finalized, the little cam made far more power than we expected, cranking out 328 lb-ft of torque at 4,200 and 294 hp at 5,400 rpm. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . Posted on May 07, 2014 by promarengine. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. The gt40p head is considered the best OEM 302 head made. They work, but present their own challenges. The MPH was there to run a little better but the local track is about terrible. 68 XR7 & 68 M-100. 68stang351 Founding Member May 16, 2002 850 Location: Re: Stock Ford 351W 4bbl dyno numbers. I have a very good running stock 1981 302 in a F100 short box. 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. Anythoughts? 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. 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. We need a build on a 400+ hp 302/6 build. Keep in mind that swapping camshafts is a fairly extensive effort. SBF engines are modified constantly. Free shipping for many products! Cloudflare Ray ID: 7a2e2d95dedea1e4 Cast iron GT40Ps as cast flow better than non-Ps due to revised plug location/angle. 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. 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 will go into more detail on the head mods in a later story in Junkyard Builder, so watch for it. 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. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. $700.98. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. 1979 Indy 500 Pace Car. The GTp heads are like GT 40's with smaller combustion chambers and the spark plugs are relocated for a more efficient burn. Assemble the rotating assembly with a stock 5.0L crankshaft, a set of 5.0L rods and the specified pistons with stock-type rings. They also have emissions legal heads as well. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust.

How Much Do Cage Warriors Fighters Get Paid Uk, Tamara Williams Obituary, Articles OTHER