I dont know too much about heads so any info will be appriciated. Apr 09, 2017 the new gt40 heads first appeared in the 1991 svo parts catalogue. He said they fit with no modificatons to the shock towers, plugs are easily accessible, regular size plugs, not shorties this would save money in the long run, even if the headers are more expensive. Mustang explorer 40p cylinder heads gt40 p for sale sold. This version was deckfacemachined further than the catalogue heads and machined for addition pushrod clearance. Basically they are the highest performing stock ford production head available for the 5. My question is, does anyone know for certain which headers will work with gt40p heads, t5 conversion. Hey all, coming here to see if someone has a similar setup. Valve guides have been resized for optimal valve stem life. Also youll need new head bolts, you dont wont to reuse torq to yield bolts. These heads have been remanufactured using refaced reclaimed factory valves.
I was contemplating them for my 90 gt a few years ago, before deciding on the edelbrock performer heads. An overview of the difference between gt40p top end and gt40 top end. But to answer your question, i built a 306 for my buddy to put in his 90 lx mustang, we bought the motor from pullapart and completely redid it, and i used the p heads cast iron and ran that 306 pushing 305310 hp no problem on the heads. Also, what other parts might i need besides new headers for the reangled spark plugs to make it fully. I have a 60 falcon with a 78 302, what are some upgrades that i can do to squeeze a little more power from it. If this is your first visit, be sure to check out the faq by clicking the link above. A gt40 head will have 3 vertical bars on the front of. Gt40p header installation installing gt40p specific ford. I know im taking off the heads, upperlower intake with tb but, is there any other parts anyone would recommend taking off to put to good use on my fox. They are popular because while they are relatively inexpensive they also offer a measurable increase in power to your engine. Best street cam with gt40p heads and explorer intake 5. After discussing the cam specs, alex smiled and agreed to build a kit for him. The gt40 p cylinder head is popular for classes that must run a stock ford production head.
The best advice i got was get a cam that favors the exhaust as thats where these heads lack. I have done a lot of research with the gt40p heads as at one point i was going that direction and agree with ed. I used the frpp y heads for my personal comparison. Best street cam with gt40p heads and explorer intake. Lift, duration, lsa, ramp rates are all very different. For real performance, stock e7te heads leave a lot to be desired. Upgraded springs is a must, and the gt40ps are a vast improvement over the e7 heads of the later 5. From what i understand i can find these on any explorer with the 5. Do the gt40 and gt40p heads have a typical milling point to go to or stop at.
I have a chance to pick up a set of gt40p heads with 5 angle valve job. I know a head swap is a must, but i cannot do that till i have the funds. Late model restoration offers a wide selection of aluminum and cast iron cylinder heads for 4. Best street cam with gt40p heads and explorer intake page 4. I got a call back from the guy that bought the headers for the p heads. Ford gt40 cylinder heads brzezinski racing products. The gt40p heads originated on the 94 mustangs and were fitted to the later explorer 4 wheel drives.
We show you how to upgrade your ford heads with help from comp cams, lunati, trick flow specialties. Gt40p head upgrades and cam selection questions ford. Trick flow valve spring upgrade kits tfs2500100 summit racing. Gt40p with 716 head bolt size came on later oe 302s gt40 with 12 head bolt size came on gen1 lightning and super rare mustang cobra rs ford aftermarket gt40s with both size head bolts only heads with a 12 head bolt hole will work on a 351w. Would like to know what the board thinks of these heads.
There is no need to get special spark plug boots when installing these headers. After working with it, i have found that it is not very easy to improve on, for an amature like myself. Gt40p heads, what kind of performance do they give. Get your mustangs engine breathing more air with a set of mustang cylinder heads. We are installing the correct headers for the gt40p heads.
Back then, there wasnt a lot of choice for staggered tip length sb ford heads. To squeeze some more ponies out of your fox body mustang, upgrading the cylinder heads can lead to some substantial results. Why are the gt40p heads so cheap over the other gt40 heads. Discussion in the hokey ass message board started by phoenix24, nov 22, 2019. Incorrect or at least less than completely accurate. Increase the horsepower and torque output of your push rod 5. I am looking to put gt40p heads and intake on my 92 lx. It needed to fit the heads without machine work, produce a decent seat and open load and allow for at least. Through central coast you can have the heads fully prepped for your combination. We walk you through what gt40 heads are, why they are a popular upgrade, and what kind of power increases you can see. They were most famous for their debut on the 1993 cobra.
How to upgrade your ford gt40p heads ford, hot rods cars. To make it work i need to do the mass air conversion and find diffrent headers that will work. Check out all of the specs, differences, and dyno proven power gains to help you make the right decision. How to identify gt40 cast iron heads it still runs. My car has a lowmid cam, trickflow trackheat intake, 70mm throttle body, and underdrive pulleys. Looking for feedback on gt40p heads car forums and.
I know i have seen where you can gain some good time with suspension upgrades. Oh youll have to have the mounting holes drilled out to use on a 351, gt40p heads ar for a 302 or 5. To accomplish this i felt that i had to open up the exhaust port and do decent bowl work on both the intake and exhaust. I need a budget set of heads and am wondering whether or not to just port my e7 heads or maybe look into the gt40p heads.
Where to get gt40p heads car forums and automotive chat. You can make anywhere from 50 to over 100whp gains, be mindful you will start finding limits with the stock headers here. I gave him my email address, and he said he would send pictures installed. As you said, the p heads require a specific header, but the regular gt40s dont. Stock air flow on this head tops out at 190 cfm intake and 128 cfm exhaust.
So money for good valve springs and decent cam would be ideal. Ford gt40p heads gt 40 p mustang explorer 40p cylinder. In 1996, ford used gt40 heads on explorers, mountaineers and lightnings, until the gt40s were replaced in midproduction 1997 with upgraded gt40p heads. Like other stock castings, there is plenty of room for improvement with this head. To identify your gt40gt40 heads, look for a gt or gt40p stamp. Aslo, dont forget you will need to deal with the spark plug issue one way or another. Fords gt40 cylinder heads fox body mustang mods cj pony parts. I appreciate honest feedback because im on the fence of just putting on gt40p heads or not. For those who will be taking their heads to a machine shop, theyll want to order gt40p 393a 1.
Gt40gt40p heads were a more free flowing cylinder head that outperformed the factory e7 heads that were found on most 5. Ford f150 questions looking to upgrade my 1990 f150 302. Sent from my iphone using tapatalk white95 likes this. Confirmedheaders with clear fit and plug access for gt40p. As a matter of fact, central coast has an 89 coupe with gt 40p heads that has run a best of 11. Am i missing anything or is there anything else i should know before. Stainless steel valves, sb ford, gt40p exhaust, select 1. When undercover ported, the gt40 head will flow 202 to 210 cfm intake and 145 on. Id like to rebuild my old 176k gt40p engine for reuse in place of my v6 truck engine. Real world data seems to show that gt40 or gt40p cylinder heads, assuming no other mods on your foxbody, are good to add anywhere between 2040 hp over stock heads.
Im running ported gt40p heads, ported gt40 intake, stock bottom end 302, longtubes, c4 trans,410s,3200 stall. These headers are specifically designed to work with gt40p specific heads. Its more having cash in hand for when a bargain comes along. Ford racings gt40x cylinder heads install hustle and. The customers heads had stock springs and he was getting ready to change cams.
Whats needed to install a trickflow head on my foxbody. After installing the gt40p heads, that time dropped to a 12. Between 1993 and 1995, mustang cobras came equipped with a type of cylinder head called a gt40. Gt40 gt40p heads were a more free flowing cylinder head that outperformed the factory e7 heads that were found on most 5. Aug 04, 2014 we show you how to upgrade your ford gt40p heads with help from comp cams, lunati, trick flow specialties and more. Foxbody mustang gt40gt40p cylinder head upgrade part 2. The gt40 heads were originally designed for the mustang cobra the performance version of the mustang and were cast iron. We show you how to upgrade your ford gt40p heads with help from comp cams, lunati, trick flow specialties and more.
For those who will be taking their heads to a machine shop, theyll want to order gt40p393a 1. Most ford motorsport ctrate motors were fitted with these heads and the gt40 tubular manifold. Gt40p heads upgraded valve springs ford mustang forums. Gt40 heads are a factory small block ford head found on a certain vehicles. There are a lot of variables that must be addressed to give a better estimate, but a good basic estimate is 2040 hp at the crank. Last step is pull the heads and for 2500 or so with cam and materials get a set if fully assembled, cnc ported heads and skies the limit on cam size, just your choice of balancing drivability and power. From what ive read, the b303 is a modified version of the stock cam. These gt40x heads feature a 64cc combustion chamber to greatly improve the airflow over the original gt40 design allowing you to bolt on 65 more horsepower. As a matter of fact, central coast has an 89 coupe with gt40p heads that has run a best of 11. Ford gt40p heads gt 40 p mustang explorer 40p cylinder heads.
This guide contains a fox body cylinder head flow chart and information on available upgrades, ranging from the stock e7 heads to fully prepped, cnc machined aluminum beauties. Our slugomatic aod mustang now finally feels like the quarter horse that it. I know the spark plug angle is an issue with headers. Gt40p heads warnings and help look here archive ford. Hey whats up yall, this is the follow up episode showing you guys how to properly identify the differences between gt40 and gt40p heads. Yes used them with b303 and gt40p heads ran fine never vowl float. Mustang heads are just one of the many things lmr offers. The ford gt40p intake port looks pretty well designed and cast in its stock form. Find great deals on ebay for gt40 heads and gt40 heads 3 bar. These heads had all the quality detail and attention i could possibly attain as. The 1993 to 1995 cobra mustangs received the new gt40 heads distinguished with the 3 vertical ribs cast into each end of the heads. Im personally about to go gt40p headsintake and e303 sent from my iphone using tapatalk. People dump a ton of money into modifying the old 289 heads, or even 351w heads. Initially, my work was very conservative since i had read that its easy to mess up the p heads and actually lose cfms throughout the entire lift range.
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