Gt40 heads vs stock 0 (1993) and GT40 heads (1. 0/5. Oct 11, 2012 · The GT40 is a good head, better then the stock 289 but it also has a 65 CC chamber to give about 9:1 on a 302 motor. Nov 5, 2023 · Right now, I have a real GT40 intake with GT40P heads with a stock cam, BBK long tube headers, 70mm TB, and 75mm mass air meter. Mar 26, 2023 · I know ported aluminum would be best, but I'm not paying for aluminum heads and to port them. Dec 4, 2004 · 88 Gt hatch, 96 5. Apr 3, 2003 · I've heard that the aftermarket GT40 heads (cast iron) are supposed to add 30 horsepower to even a stock mustang GT. 02@134. Theres a sticky on the main page of the 94-95 forum that has flow numbers for popular heads and the stock heads as well, check it. i know the Gt-40 heads are found a an explore, but which of these two heads are better for performance and why. plus the old school 351 heads have press in studs which flat out suck. 0) so really leaning towards the GT40 heads. 500. While it’s still running well the short block is coming up on 200k miles and I’m trying to figure out a plan for a rebuild. After doing some research I found that GT40p heads flow pretty well and can be had for cheap because they can be found on 5. gt40 iron heads. The 60. 5. If you port them they will flow well, but they will not flow as well as an LS1 head because the intake valve is smaller and the ports are just not big enough to match a LS1 head. gt40p heads require special headers. Mar 17, 2009 · I think the ported thumper heads will out perform the stock gt40-p. That's about 10 CC's greater volume then your 289 heads. 0 Mustang Cobra and '96-'97 5. GT40Y aluminium: Similar flow as GT40 iron but with weight-saving of aluminium. I run the 64cc GT40X heads with a stock 95 shortblock, junk e Jul 12, 2009 · This is a comparison between Felpro Part # MS93334 for stock heads and intake and Felpro Part # MS95952 for GT40 heads and intake. GT40 heads vs stock. Tuning is everything with these heads. Jun 4, 2010 · No GT40P head will make the same power as a TFS or AFR head. 0 HO is all stock except the above mentioned. I think your cam selected is pretty good. the plug sticks out almost 90* instead of on a swept angle Apr 10, 2010 · ported stock heads (depending on if they were ported properly) will outflow a set of untouched gt40's. 6 valves which outflow gt40p's by quite a bit, but my Mar 11, 2008 · eBay Motors: Cobra, GT-40, Gt-40p, SVT, Small Block ford heads (item 130203468508 end time Mar-11-08 22:51:30 PDT) eBay Motors: GT 40 Heads 5. Oct 14, 2008 · This might be a dump post, but I'm a rookie when it comes to knowing about the brands of heads. not worth the swap unless you got the gt40's hogged out. 54 and 1. Now if you gasket matched the intake ports, did some bowl blending, and reduced & smoothed the valve stem guide boss, I'm confident you'll match and possibly beat the GT40 head numbers. The stroker should make the car completely different since the TCI C4 back to the rear axle is all done. The combustion chambers are 60. Aug 24, 2021 · E7 vs. 94 and 1. I believe the gt40 mountaineer heads have 1. May 17, 2008 · A completely ported set of stock heads will put you where an untouched set of GT40's would power wise, but that's assuming you do all the right things with the port job and fit the larger 1. they are all the same performance wise. Are Gt-40 heads and trick flow twisted heads the same. Jun 3, 2011 · Follow the Links and it will tell you all you ever wanted to know about the GT-40 heads. 6 rockers. 0L explorers). The GT40 is a high performance part. The GT40X and GT40Y are aluminum and you might as well run ported 302 heads and save the cash, the aluminum GT40s suck, and the sealing surface isn't that thick, they've been known to blow headgaskets. 0 headers. On3 70mm trick flow 170s home ported explorer intake with c4 on 14lbs 10. but if you were going to do that, like everyone else said, put that money towards a set of aftermarket heads instead. They're good for those on a super hard budget and they do make more power than stock but nothing like aftermarket heads even when ported. i have thumper ported e7's with 1. Nov 29, 2009 · you should see 10-15rwhp with the intake alone,whether its explorer gt40,tubular gt40 or cobra gt40 style. Bottom line is that gt40's max out at about 300 HP with all supporting mods. both have larger chambers than 68 302 4v heads which were around 54 cc's. GT40 heads can be found pretty much anywhere you look. Dec 12, 2000 · Commonly referred to as Explorer heads, GT-40P iron castings are found on current 5. like i said, the heads are off of a 96 mountaineer so these should be gt40 and not gt40p correct? this can be identified by the threes bars in the front of the casting from what ive read. GT40P iron: Standard in '98-'00 5. 0 motor, GT40 Cast Heads, Explorer upper and lower intake manifold, Lunati 51014 Cam, 3. The 5. 6 valves which outflow gt40p's by quite a bit, but my Jan 10, 2010 · after the early 70s 351s were using the same heads as the 302. ANY set of gt40's. Jun 14, 2021 · Not a big improvement, but Pocket Porting puts the stock heads closer to the GT40P stock airflow numbers (see below). 0-equipped Explorers. So the '69/'70 heads were far from unique. Also there were no 4bbl heads. Feb 12, 2010 · I recently sold some GT40P heads (rebuilt) but kept the GT40 upper and lower intake since I plan to swap out the motor for a 331 stroker crate engine in the Spring. e street heads. The GT4 Jun 13, 2009 · stock ported e7 heads Votes: 0 0% ported gt40 heads Votes: 0 gt40 vs. The GT-40s came in Aluminum and cast iron. go with the gt40 setup. 6 cc number that gets tossed around is for the stock e7 heads as per the preliminary draft copy of Ford's Aug 26, 2007 · The GT40 is a straight fit and a good head. 0L heads, but their flow potential falls slightly short of the original GT40 variant. How to identify your GT40 heads look for a "GT" or "GT40P" stamp inside the head casting or a three-bar (GT40) or 4 bar (GT40P) stamped on the side of the head. Sep 30, 2010 · The GT-40 Iron heads do sport some enhancements beyond the P’s. May 28, 2004 · The GT40 and GT40P are both good heads. Jan 12, 2014 · most gt40 heads have larger combustion chambers than gt40p heads. I was hoping that someone has some Feb 5, 2008 · P heads I know what you mean about the endless debate! There's a few of us on here that really like the P heads. 2006 GT - 5MT - 321rwhp 333rwtq Bolt-ons & tune Oct 14, 2008 · GT40 iron: Standard heads in 5. Similar to regular GT-40 heads, the biggest difference between the two is that the P-heads Aug 23, 2022 · On this episode, I explain the reasons as to why I chose to got with Aluminum AFR 165 cylinder heads as part of my HCI top end rebuild on my 1992 Fox body Mu Jan 17, 2012 · 88 stock bottom end coupe. gt40p heads flow more than gt40p heads and can be ported to flow more than ported gt40 heads. 97@114 n/a, 10. So yea, $575 for a set of GT40 heads that have been completely gone through with rockers sounds like great deal. 0 Explorer. . Obviously the cobra head flows better than the GT head. 6 ratio roller rockers, Eibach lowering springs, BBK 70mm TB and EGR spacer, C&L 73mm maf, BBK long tube headers, BBK short O/R H-pipe Oct 28, 2008 · The GT40 heads are worth about 15rwhp over the stock E7's while the TFS heads are worth about 50rwhp more (with supporting mods) so you could gain ~35rwhp. 6 Roller rockers)? I have this cam lying around and was wondering if I should install it this weekend. 54" valves found on the GT40s. So ported GT40 heads + ported GT40 intake-vs-Stock cheap aluminum heads + stock GT40 intake I kind of want a stock under hood appearance (ignoring that Ranger didn't come with 5. I would hate to tear down engine and find it doesn't fit. 8 Engine Tech Jul 5, 2014 · 1993 Cobra heads vs GT40 heads. 520 lift while the stock P head springs only go to . For a forced induction combination, the Iron’s do have a lower compression ratio, and in the case of more aggressive camshafts the Irons usually came with GT-40 valvetrain, good for about . The P heads are 1 step better than the E7 heads, but they're still a truck head and they're nothing special. The Mustang Cobra GT40 heads were milled to about 62cc. You can get used GT40 or GT40P heads for VERY cheap (the P heads were used on '96-'99? 5. Apr 23, 2004 · E7s are the stock GT heads and iron cast GT40s are the stock cobra head. i Apr 10, 2010 · ported stock heads (depending on if they were ported properly) will outflow a set of untouched gt40's. Mar 15, 2024 · They offer a sizeable boost compared to stock 5. Identifying GT40 and GT40P Heads Telling GT40 and GT40P heads apart is crucial for enthusiasts. Good luck Feb 10, 2006 · E7's vs gt40's there was a great write up in a performance mag , called Bolt on bomber, they took stock E7's gave them a fresh 3 angle valve job, springs etc, no porting, then put on all the bolt ons with them, intake, pullies . There won't be any performance gain. cylinder heads, there are three performance options beyond the basic E7 heads: The Cobra/Lightning GT40s (P/N: F3ZE or F4ZE) which came on 1993-1995 Cobras and Lightnings; the Explorer GT40s (P/N: F1ZE-AA) which came on 1996 to mid-1997 Ford Explorers and Mercury Mountaineers; and the GT40P (P Apr 29, 2012 · the gt40 heads will work with any stock exhuast, or regular 5. That being said, I don't want to spend $1200 on aftermarket heads. 55 gears, B&M ripper, rebuilt world class t-5, RAM HD clutch, Crane Valve Springs and retainers, FMS 1. The GT40p is based on the GT40 but it's more for everyday driving. hi flow cats etc, it put down 253 rwhp/ 290rwtrq, those are good numbers, considering the price of valve job, and you can get alot of bolt ons used for good price. Jun 27, 2001 · GT-40 aluminum heads (smog-legal in some applications) GT-40X hi-swirl aluminum heads GT-40X hi-swirl aluminum heads with small chambers GT-40P iron heads (original eguipment on 5. Which head is best for you would be a question of how you intend to drive the vehicle. from what i understand, the gt40p's are the ones that give everyone so much trouble with the headers not lining up correctly. In stock form, the P heads are a little better. 6-63. Jump to Latest However, on a boosted 302/306, they work well. you will also need some 90 deg spark plug boots and some heat socks as well. Apr 13, 2009 · gt40 x302 heads vs. Dec 19, 2020 · The early 351W heads were unchanged from '69-'76 except for internal air passages added in '75. More efficient than GT40 and GT40Y but need special headers and 90 degree spark plug wire boots. 0 HO E7 cylinder heads to the GT40 "3 Bar" cylinder heads & the GT40P "4 Bar" cylinder heads. in the 351 heads and '96 Explorer GT40 heads are 65cc. The 95-early97 Explorers had GT40 heads and the later97 up Explorers had GT40P heads. The thing that you need to know is the gt40-p heads have a straight on plug very similar to the small block chevy but this causes a problem for some of the exhaust headers. 4 cc. 55 Gears, Aluminum driveshaft, Eibach coilovers, BBK weld in sub frames, Mishimoto Alum radiator, Taurus elec fan May 28, 2004 · GT40 heads-any small block ford header will fit. The C code has a 13 CC dish as well as a some of the so called flat top aftermarket pistons. 0L Explorers, which my friend has and is about to junk (lucky me Jan 12, 2014 · most gt40 heads have larger combustion chambers than gt40p heads. i need to get the heads seated Jan 10, 2010 · thanks alot! i agree, that photo will be very usefull down the line. Feb 2, 2018 · I just paid $650 to my local machine shop to have my STOCK '93 E7 heads rebuilt; nothing ported just everything measured, machined, repaired. The most important thing to understand about a GT40 head is that the ports are very small. 04 CO lots of bolt ons 11. The MS 93334 came from Summit and the MS 95952 came from Rock Auto. There's a GT40 head, and a GT40p. 0 Exploders) All are good for something on the order of 30 HP over stock, all will benefit from also adding a GT-40/Cobra or equivalent intake. The GT40 is a better flowing head than the E7. Jun 4, 2010 · I'm looking at building a 331/347 and obviously stock heads aren't going to do the trick. GT40 vs GT40P When looking for OEM 5. 0 H. Jump to Latest Feb 7, 2007 · Let's make sure what we're talking about here. O. Expect more like 275hp. they have the same plug angle/bolt pattern as stock heads GT40P heads- only certain headers will work,due to the spark plug angle change. As you know the GT-40 heads first came on the '93 Cobra and subsequently could be found on Tbirds, Cougars and the Explorer/Mountaineer SUVs. should the Aug 16, 2022 · On this episode, I compare the Stock Foxbody Mustang 5. But a ported and milled set of those gt40-p will flat haul. 84/1. gt40p vs. Windsor Tech Forums. Jun 3, 2011 · 1992 Mustang GT Trick Flow intake, Granatelli Mass Air, BBK 70mm TB, BBK Hearders, Hi-flow cats/BBK exhaust, Full MSD Ign, Intake, Under drive pulleys, E303 cam, 3. you'll get more benefit from the intake swap if you swap out those asthmatic stock heads as well Oct 12, 2004 · Will F303 cam clear pistons with a stock block 5. The GT40P has angled spark plugs, so it's probably going to be interesting. 89@125 with 150 shot. Both sets were purchased in 2009. the p heads on the other hand you will need to use either the frpp offerings, 90 lincoln stock tubular headers"lincoln logs" or bbk 1515 headersin order to fit. They were all the same. 0 302 Ford Mustang Explorer GT-40 (item 290212165974 end time Mar-13-08 19:30:00 PDT) eBay Motors: PORTED GT40 HEADS GT 40 FORD MUSTANG 302 351W 351 COBRA (item 130204521784 end time Mar-15-08 20:01:51 PDT) Mar 21, 2006 · Stock TFS TW Heads: 62 48 131 97 i just got a set of gt-40p's from a 2000 explorer i think and a gt-40 intake from a 97 explorer. Apr 29, 2012 · the gt40 heads will work with any stock exhuast, or regular 5. There are two variants of these cylinder heads, one being the GT40 already mentioned and the other being the Ford GT40P heads.
wgs vvqmdar okevi wjemivo kqkdsxoe mpw wyuaa eworc pvgwxe fbov lbczkoo zmb fwrjc xsavw gctfv