302 with gt40p heads horsepower 302 with gt40p heads horsepower

We gained 45 hp and 40 lb-ft of torque. Calculated compression to 9.8:1. 68 XR7 & 68 M-100. However, stepping up in the performance head market will set you back more than $1,200 for a decent pair of aluminum castings--and that's straight out of the box, with no porting. this is the price for one head. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Gt40 heads/intake from a jy explorer, leave the . 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. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. Everything fits, use the stock rockers and pushrods. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. For this reason, we're not sure what kind of boost the GT-40P heads will give. 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. They also have emissions legal heads as well. Free shipping. I guess I had it backwards, sorry about that, didn't mean to spread misinformation. 1986 Short block with notched pistons. A forum community dedicated to Ford Mustang owners and enthusiasts. Ive been building ENGINES for 40+ years. A good port job can set you back another $500-$1,000. Took me 7 hours to do one head.but they cleaned up real nice. In review, we rescued a used 5.0L Ford from the boneyard, ported the heads, added a cam, carburetor, intake manifold, and headers, and pulled an amazing 376 hp out of the mix. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. So . 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. You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. That's a 40 per cent increase in power from a simple head and cam swap, and one seriously happy Mustang owner! SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. 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. I need that part number too! Just put some 1.7 pedistal rocker arm on along with a mild camshaft (make sure to use the correct valve springs), you will make over 300 flywheel hp. 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. The engine was only rated at 215 hp, but it at least had 9.0:1 compression. Those heads were unported and had stock valve sizes! 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. The reply has so many assumptions that I cant even assume to know the answer. 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. GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . Never not once have I ever seen a SBF rod bolt create a failure. Like I said lots of options. 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 used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. I'd much rather be able to drive it at 8 or 9/10s of what it can handle. (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. Choose a cylinder head before you install the pistons. 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. $930.00 + $55.00 shipping. how hard to put on? I got a set of AFR heads , night and day. I don't need tons of power to enjoy the car. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. Yea. Even with a stock Mustang 5.0 cam makes good power. The action you just performed triggered the security solution. For 2018, the Coyote makes 460 hp. For real performance, stock E7TE heads leave a lot to be desired. These timeslips are from 1280' above sea level. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. 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? I've not seen a set of longtubes that have an issue with GT40P's, either. I got rid of the carburetor and went with a F.A.S.T. Not looking for crazy HP. i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. Where they differ is the combustion chamber size. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . How much HP and torque do you think I. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. The car weighs #2835 with driver. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. Because of this, your tuneup will probably need to be modified. Thanks. i'd love to use these heads,. Cant wait to try um out. Runs well. Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. by travis Sun May 03, 2020 8:33 am. These heads have been remanufactured using refaced reclaimed Factory Valves. This time around, we chose a shining example of this junkyard art form. Learn how your comment data is processed. These are Ford iron GT-40P heads. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. I'll prob take a trip up there this weekend after scavenging the junkyards, thanks a million. I may do some port matching and a little cleanup, otherwise just a set of springs and cam and see what I have. No-option stripper- I like strippers. 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 You just want to keep it out of detonation. With no other changes we gained 25 hp using factory iron heads. But dont think that adding a bigger camshaft will make more power. Let us explain. Hey all, I'm working on building a 302 with my gt40p heads. There was an article in Hot Rod magazine in the mid '80's where Jon Kaase was developing 351w packages. 950.00 us a set and will ship . (Please note these are not GT40P Explorer heads). Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. The spark plug issue is almost a non-issue. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. the springs are new stock oem ford. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. Over $2050 for the 165/185 renegades. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! 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. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. That said there are some better aftermarket options for heads also. Take the assembly to a machine shop to have it balanced and install it in the block. For those of you running a carb, or aftermarket intake, you already have a leg up in this area and should see even greater gains in power. Be careful, I was once bitten by one of those reptile engine builders. this head fits years 95-01 explorer mountaineer mercury mountaineer . Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. 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. 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. HAD '82 GT monochromatic (red).black cloth HAVE 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. Many years ago, a friend bought a used 2001 Mercury Mountaineer 5.0L that was equipped with a set of really decent GT40P style iron heads. Calculating pushrod length 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. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! Motor is going into a Ranger. They work, but present their own challenges. 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. Consider having the head's intake ports matched to the intake manifold gasket. Assemble the rotating assembly with a stock 5.0L crankshaft, a set of 5.0L rods and the specified pistons with stock-type rings. This will keep you from dropping your overall static compression ratio and losing power. Pretty sure that was name, but I could be wrong. I'm also have the regular GT40 heads on my current build. The gt40p head is considered the best OEM 302 head made. Without changing the stock pistons. Because its all been done time after time after. 1979 Indy 500 Pace Car. could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. Now he serves as a regular contributor to OnAllCylinders. You can use the stock roller lifters with any size cam you want. These engines came with the GT40P head, which even with its small valves, offers really good performance. how much HP and torque? 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. Yea. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. The GT40 heads have thermactor holes built in to connect to the EGR/smog equipment whereas the GT40P heads use an external EGR connective system. Stock valve sizes? JavaScript is disabled. What would be the best cam and springs to use for these heads in a 302 Windsor? JUNKYARD GT40P HEADS-ADD 30+ HP TO YOUR 5.0L (FOR FREE?) The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. 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. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . Anythoughts? Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. Obviously, tuneups will vary. 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. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. Ported Hurricane Single Plane and custom 750 HP. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. These are some of the pictures I have showing the Explorer manifolds. I had those on my car before I upgraded and they were nice heads. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. 02-11-2012, 07:16 PM #6 fiveoh 86lx Stock 1989 5.0L HO pistons will work if you can find them. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. Theres many options available for a little more power. Nice to see actual dyno results instead of "butt dyno" guesses. You can email the site owner to let them know you were blocked. 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. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. Skip to main content. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. 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. 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.