E7 vs gt40p. I agree with bartl on flow vs static CR.

E7 vs gt40p May 28, 2005 #13 May 28, 2005 Works on all factory cast iron E7, GT40, and GT40P cylinder heads! Application. Properly ported E7 heads flow better than stock GT40 heads, but if you're on a budget, you'll be happier with GT40 or GT40p heads for your dollar spent. S. GT40 Heads comparison. The springs are double springs so I don't think the springs and are actually preferred over the stock gt40p springs. 512" lift, 145Lbs Seat, 10 Degree Hardware, Custom Build, ships in around 30 days from order. money is tight so i'm just looking at using the d8 head for now to get the car back on the road. from what i understand, the gt40p's are the ones that give everyone so much trouble with the headers not lining up Well, if your on a budget like many of us, GT40P heads are the way to go. 8/351W) - E7TE Heads, Are they the best ?? - I cant run the GT40P heads in the class I race in since we are required to run cast iron exhaust manifolds. com/cylinder-heads/ford-heads/ I just wanted to replace the stock 302 heads with GT40P heads in this thread in this sub-forum in the entire site. 5. 800" and a . 8/351W) - E7TE vs. The P How well do these heads flow unported vs e7, gt40, gt40p? 3. they dont flow enough on a 302 so dont bother with putting them on a 351. However, though they were once available in just about every junkyard, it’s become more difficult to find GT40s in good condition. . 540" Lift (ADD HARDENED VALVE SHIM KIT: No, ADD VITON VALVE SEALS: No) VSK7G49-M If I go back to the Stock Explorer cam, I'm running the springs I have now. 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. 800" vs 1. Jump to Latest 11K views 15 replies 10 participants last post by Adower Aug 8, 2007. gt-40p vs stock Jump to Latest 5K views 10 replies 5 participants i guess il start this out with what i know, but im not an expert GT40's have a 1. gt-40's; Notices E7's Vs. They fit with ease, no modifications needed, and I went with the fordracing GT40p headers. 1454 posts · Joined 2007 Add to quote; Only show this user To clarify, for $300 you get ported E7's AND a ported Explorer intake? If that's the case, I would say that's a pretty good deal. I did make a mistake on the peak torque rpm's. 570" lift and provides spring rates that can handle significantly more aggressive lobe profiles to 業務用ハンディターミナルPRea（プレア）GT-40の概要を紹介しているページです。 Small Block V8 (221, 260, 289, 5. Both have 1. S Spencer - did you ever get the heads reflowed The e7 heads came off 5. 544 w/1. 3: P heads have a slightly smaller exhaust valve, 1. Should I have any compression concerns? 4. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright An overview of the difference between GT40p top end and GT40 top end. As you said, the P heads require a specific header, but the regular GT40's don't. 0L will make a good donor engine. The heads came with springs and stamped rockers, presumably stock gt40p pieces. The other thing to consider though, P heads need specific headers. e7 vs p's. If you poor flow and high CR you're just compressing a lot of nothing. 60-63cc. 46". The GT40P has smaller chambers, so it is a bit tighter than the GT40, although we do not recommend using the GT40P heads on a high compression build. If you can obtain them inexpensively, GT40 heads are dependable and have improved flow when compared to the E7s. Mar 18, 2010 12:15 PM. 512 lift . Feb 18, 2001 42,404 17,960 224 Massachusetts. the locating dowel pins are the same. My short block is a non roller '89, probably from a cop car going by the casting numbers. I'm debating on heads for 5. 0 motors even hold back the stock Mustang 5. The E7 head peak was at 3200 and the gt40 x was at 3500. 46 exhaust, again i could be off on that, but it's close, i run With the P heads they have the plug issue. both are great heads. and like stingrey said, good ported 7's will flow good too. Jump to Latest About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ported E7's vs. Small Block V8 (221, 260, 289, 5. Jump to Latest 8. RedGT; Start date Sep 20, 2005; 1994Vib. Here are some pictures. I would search around for a set of the actual GT40 heads off of a '93-'95 Cobra. 562" Guide, GT40, GT40P & E7. beartoothweb Discussion starter. jb65542. 78intake valves and 1. 8 Engine Tech We show you how to upgrade your Ford GT40P heads with help from Comp Cams, Lunati, Trick Flow Specialties and more. I was contemplating them for my '90 GT a few years ago, before deciding on the Edelbrock Performer heads. Mod Dude. yea they flow a little better,have bigger valves. while the gt40 is the same internal design as the e7's. Research is showing me that factory GT40's from a Lightning has 64cc's. SB FORD, GT40P, E7 DROP IN VALVE SPRING KIT, HYD ROLLER - Alex's Parts I am trying to figure out which head I want to install. 0 Mustang & Super Fords Magazine 80 mustang, 331, ported small valve E7`s, 780 vac sec, rpm airgap, mac 1 5/8 lt`s, C4 w/3200 stall, 255x60x15 MT dr`s, 3. gt40 were on the 94-95 cobra's and explorers up till 97. stock or ported P heads, im guessing it wouldnt really be worth the trouble and money over my ported stockers, unless the P's can be ported and really outflow ported E7 heads, thanks guys Edelbrock's E heads vs. But I had to heavily clearance the tubes of cylinders 2, 5, 6 to get them to bolt up. Merchandise. 0 cam. Hey Folks, I'm going to be starting my gt40p swap in the next couple months. 5cc chamber, if I remember. The spark plugs come out at a different angle. Advantages: Easy bolt-on mod for stock E7 or GT40/GT40P heads, fit under stock valve cover, rocker arm channels ensure valvetrain stability. 1 2. 98 Explorer Limited PROJECT, 6R80 trans, XP8 body kit, KB 2. What are the advantages of a GT-40 iron head, versus the stock E7TE heads, and how much power are the GT-40 heads capable of supporting? 00' Lightning -- Basic Bolt-ons. You might want to look at the cam too. 78 intake 1. My cam is a . Magazine. 9K views 13 replies 8 participants last post by MustangTurboCoupe May 9, 2007. Powerheads are the ones who supply the information about the flow potential of those heads. Gt40p. E7 vs GT40 heads. 1996 f150 and gt40p heads. iwantmore. 530" Lift, Hyd Roller, VSK7F48-M2. if it is a money factor, then go with any gt40 head Not sure on the mcsa, I'm sure it's at the pushrod pinch on both and they were both stock in that area so maybe someone here knows. The only way I know to identify the E7 or E6 heads is to remove them, flip them over and read the part #Cobra #Budget #JunkyardOne of the best kept foxbody secrets to date. 73`s, Cam 228/236 . the p heads have external egr. In this video I discuss how to identify GT40 GT40P E7 E6 E5 by the casting marks. killacal Discussion starter. 0/5. per the builder. Aug 25, 2010 #3 The COMP Cams® GT40 Drop-in Valve Spring Kit allows up to . 2619 posts · Joined 2008 Add to quote; Only show this user #1 · Mar 17, 2009. 8/351W) - GT40P heads in a 351w - This is a repeat of the same post that I put in the 351w fourm, just wanted a few more people to see it. 0 They to almost flow the same and the gt-40 heads and are cheaper. '67 Pro-Touring Fastback that does wheelies and gets 20 mpg. net and read the 100's of posts about the advantages of the GT40p's over E7s (stock mustang. If you have to worry about emissions. I have a good d8 head , what are the differences, The car is a stock dd. 393" Tip Length; Stock Replacement valves for SB Ford w/ GT40 and GT40P heads. Ported E7's are nice, but the GT40 heads are better, in my opinion. Nov 14, 2005 328 2 18. This 351W has E7 heads that were milled down to 59cc's. gt40p vs. There is a better way. The cheapo headers fit the E7 heads I originally had. But if you're really looking for performance, A set of 500~1200 dollar performance heads will perform 10 times better than a As long as you have fun builing it do it. Also the plugs are different from the E7 heads. Like it's been mentioned before, the E7/GT40/GT40P heads use pedestal mount rockers. GT-40 iron longblock, both 100% stock. port of gt40 and gt40p's the P's cannot be ported as much due to a revised water passage in the casting that will not allow the P's to be opend up as much as the reg. I THINK the GT40P heads read "GTP" in the same location. E7, GT40 & GT40P valve spring swap. 0/302 engines. 90 ferrea valves. There's no need to to do a port job to mach the intakes in this case it will be fine. Manufactured to OEM specifications. The GT The comparison is easy because I never touched anything in the longblock's here, untouched E7TE longblock vs. Honestly, unless you're given a set of rebuilt E7's or you get them for less than $100, I wouldn't mess with them. Your '96 should already have a roller cam. 855 posts · Joined 2004 Add to quote; Only show this user #1 · May 6, 2007. 54". hey so on a 302 we all no that e7 heads breath as well as a 90 year old daily smoker so which heads would be the best pick for a 302 ford non roller or in this thread in this sub-forum in the entire site. EDELBROCK HEADS - does anyone know what would give better performance? the gt-40 heads or the edelbrock performer heads? im looking to put some performance heads on a 351w and what would be the way to go? My E7 heads out-flow a gt40p per the flow chart I got with them but since I have no idea what level of vacuum these were flowed at, I can't really be sure how they compare in any meanignful way. Events. Can't remember exact exhaust fow Parker intake I still have to finish intake. GT40P's That's 115 hp more than a stock 5. 0L engines 89MustangGX I have nothing productive to add! Jul 3, 2001 10,262 1 0 Mill Creek, WA. P heads sell all the time for 300 bucks or so, a port job on a set of E7 heads is gonna run you 600-800 bucks. I would opt for the gt40p heads myself my reasons, gt40p heads have a 60cc compared to stock 64cc more compression power. regular mustang heads ( e7's) have a 1. Steven Thompson Discussion starter. 0/302, 5. I had how much power is a head swap worth on a 5. If your reffering to the gt-40 iron, like the heads that came factory on the 93-95 cobra, and early ford exploders, they arent a whole lot better, the valves are bigger 1. 8 Engine Tech. Sure, you could race-port the existing E7 castings, which many have done, but then you're putting quite a bit of change into stock heads. My engine is not assembled yet. Only The heads are off and im going with stock e7's for emissions and then probably going with real gt40's. ) Lots of reading. e street heads. Jump to Latest The gt40p heads has bigger intake runners little bigger valves smaller 58cc chambers for more compression. thumper E7 vs GT40p. How-To. 1987 - 1996 F150 & Larger F-Series Trucks. 844" Diameter Head; 5. which is plenty suffient for a mild build I'm still in the middle of porting my E7's (for my 5. sidewinder Discussion starter. *NEW* SB Ford, GT40P, E7, Drop In Valve Spring Kit, Max Output II, for Boosted engines running . corral. 120. No change at all compared to the E7 heads as far as outer hardware The GT40P came in 97-01 Explorers. Jump to Latest But I erred on being 1. I'd love to get a pair of GT40 heads, but I'm trying to keep the build as low budget as possible, so unless I can find someone who will trade me a set for some other parts I have, I'll probably port the E7 heads and go from there. Some aftermarket headers work better than others for the GT40P heads. Click to expand You are correct, he's posting runner volume in cc's and calling it flow, my guess is that he doesn't really know what the numbers mean. Gt40p Does anybody have or know of any horse power gain going from E7TE heads to GT40P's? If your running these heads in a 1965 or 66 mustang please contact me. I'm contemplating doing some ported E7 heads from All the charts I have read list E7's flowing 160cfm and GT40/GT40P's flowing about the same at around 190cfm. Here is a great review, GT-40P Heads - 5. E7TE vs GT40 heads. the E7's, GT40's and GT40P's all came on factory stock Ford 5. Could went more % but I didn't. there are so many advantages of aluminum heads. -Eric 65 Comet wagon, 60% of the time it works every time. GT-40 2N stainless valves lapped and Trickflow 2500100 valve spring kit review These where /are for my kids 94. Thread Tools Search this Thread Dec 21, 2008 | 07:56 PM Share What is the difference between the GT40's and GT40P heads? one better than the other? Reply. Stud mount: E7 Cylinder Head. sweet91lx50 Discussion starter. Compare "NEW* SB Ford, GT40, Drop In Valve Spring Kit, Max Output II . This will make for a slightly higher compression ratio. 84" intake valves. Jump to Latest 2. I've been searching through the archives trying to find some detailed information about the E7 or the GT-40(P) heads and have found some good stuff. Disadvantages: Non-adjustable (may require shims or longer pushrods to correct lifter preload), 5/16" rocker arm bolts limit maximum spring pressure and rpm capability to ~6000rpm. 0 Fox Body The GT40 is a better flowing head than the E7. I. 0), what a job! My compressor has a hard time keeping up with the die grinder. 230cfm. Which head is best for you would be a question of how you intend to drive the vehicle. I was wondering if anyone else has done this swap and if they Fitment: Small Block Ford w/ . Mustang5L5 That isuntil I whipped out my Bissell. 3859 posts · Joined 2001 Add to quote; Only show this user #1 · Jan 30, 2006. gt40's might as well. Jump to Latest Use gt40P heads. Every single V8 Explorer had the GT40P. Also fits some 351W applications. FFR4373RD MK3, nondonor, DIY options/mods/paint, Lexus indigo/Viper silver, Hydroboost PS&PB/discs/ABS, I'm switching out my tired 352 FE for a 351w, and I'm going to be using GT40P heads. I have dual springs, but would the pressure be too much for the "soft" seats? 5. At 88%. In relative terms, the E7 heads are open chambered. Sep 20, 2005 #1 Sep 20, 2005 #1 As long as you have fun builing it do it. I know the E7 will be the easiest to find, the P's will flow worse than the 40's, and the 40's will probably be the hardest to find, and that all of them will need new valve Properly ported E7 heads flow better than stock GT40 heads, but if you're on a budget, you'll be happier with GT40 or GT40p heads for your dollar spent. 54" exhaust valve whilst the GT40P cylinder heads have a slightly smaller one at 1. phutch11 Member. 78 intake and 1. 0, have rebuilt set of Thus, GT40P cylinder heads may give a small bump in compression. P heads sell all the GT40 cylinder heads were a more free-flowing high-performance cylinder head that outperformed the factory E7 heads that were found on most 5. 46" vs. 50. The flow numbers for both heads are the same. Installation Instructions. Had a set on a 92 short block milled down to 47cc for even more compression had a 510/534 lift cam and a 150 shot it only ran 7. I know these springs This rebuild will consist of my block punched over 0. Ported E7's Vs GT40P Stock. the e7 heads are better, but not "that much" better and may need some relief in the piston to work. These use the OE design/shape except they're manufactured of a higher grade material known as: "Viton". GT40P's and then go over to corral. The GT40 was used for a very short period of time. Features. You can find them in ford 150's that had the 5. 030-in. 84" intake valves, but the GT40 has a 1. Greg . Install & Tech Guides. #GT40P #Ford302 #small How to identify Ford Small Block 302 Cylinder Heads. Both heads have 1. E7 vs. Advanced Search gt40 vs. The stock E7 heads on the Mustang 5. The bars or lines as mentioned are very obvious on the ends of each head. Reply Subscribe . 0's that where 1987 and newer I think that's why it's e"7". castheads. 0l ford? Windsor Tech Forums. I have a set of ported E-7 heads in my garage that I was planning on insalling but I recently ran across a set of GT-40P heads at a great price. I bet they have a similar kit for the GT40's Tim Windsor Tech Forums. GT40/p The only change that I know of will be with the angle of the plugs, so you may have issues with your existing headers/manifolds. Save Share Reply Quote Like. GT40 vs GT40P, which cylinder head is better? The GT40 and GT40P are two different sets of castings for four-cylinder Explorer/Mountaineer heads. I'm swapping my E7s with a pair of remanufactured P heads, a tubular gt40 intake, and retaining the stock cam. the p's are on the 98-99 explorers i believe. Read the thread right above this about E7 vs. 6K views 15 replies 11 participants last post by heavyd5 Apr 27, 2024. 0 HO E7 cylinder heads to the GT40 "3 Bar" cylinder heads & the GT40P "4 Bar" cylinder heads. 13. The comparison is easy because I never touched anything in the longblock's here, untouched E7TE longblock vs. Aug 19, 2004 585 0 16 Denver, CO. The GT40 heads have far better chambers than the E7 heads. The head change was during the 97 model year. 22 posts · Joined 2023 Add to quote; Only show this user #1 · Apr 5, 2024. The GT4 Re: 302 E7 heads vs 289 C6AE heads Great information, thanks to everyone who weighed in. Upgrading to GT40 Heads. E7 heads have 1. Tom. 5K views 11 replies 11 participants last post by motorheadcrm Apr 7, 2009. I think all in all, the explorer 5. , GT40P heads (completely stock, no alterations), Explorer/GT40 upper & lower intake manifold(s), Dynomax or MAC headers, some variant of CompCam, with my 'personally tweaked' AOD backing it up. I picked up mine with the upper and lower intake for 300 bucks, and my gt40p heads came with CHP springs. GT-40 VS E7 Heads. Mar 10, 2009 #4 Mar 10, 2009 #4 No just normal GT40 irons. Also if you look at the lower head bolt by the number 1 or 8 cylinder you would see GT for GT40 heads and GTP for GT40P heads cast into the head. GT40 vs E7-TE. gt40'sso ported to ported the reg. Which head will perform the best with my combo: Heads:Ported e-7 or gt-40p cam:e303 or TW i was reading on another boards and this guy said "My stock heads that i home ported out flowed GT-40 X heads. 075" Overall Length. 46 exhaust but they have a better plug angle, and reguire special headers. Don 92 Mark VII LSC SE - soon OBDII and 4R70, GTC kit and 347, custom paint. Im not an expert. E7 to Gt40 head swap. I am running a e303 cam with mine and it seems to run well. Jump to Latest GT40P heads - 97 1/4-2001 (four bars) GT40 heads - 96ish-97 (three bars) There's a million posts on www. Okay, nothing in there too special, but that's what I'm working with. Expect to pay $250-$400 for used cores + $200 in rebuild + $150 in new springs. if you sit and think about it u will spend 1300 for a set of good aluminum heads that On this episode, I compare the Stock Foxbody Mustang 5. GT40 parts are Junkyard GOLD! A welcomed budget minded upgrade for your Mustang! Includ I have a 95 gts with a cracked head -e7. . 48 exhaust valves GT40 heads have About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright This is almost an apples-apples comparison That might help some of you evaluate what iron GT-40 heads are "worth" in terms of HP or what not when bolted on. Need4spd90 uses P heads and I use F3ZE-AA non-P heads. Valve Spring Kit GT40P, Low & Mid Lift Cams, High Output Drop in up to . My question is how do these heads compare to each other? I found a link that was supposed to have a lot of head flow info, but it was dead. gt40 heads "should" outflow the p's if done wellbut prob. moss1949 · Registered. 6K views 5 replies 5 participants last post by Huskinhano Jan 30, 2006. 163 posts · Joined 2004 Add to quote; Only show this user #1 · Aug 7, 2007. Jump to Latest bout the only difference between the gt40 and teh gt40p is where the spark plugs sit, the p's give you better combustion. A lot of people here will tell you not to bother wasting money on E7's, but if you're getting both ported heads and intake that's a pretty solid deal - very economically friendly. Angled milled . 0 Worked over E7's still do not equal a stock set of GT40s. not by that much. Jason '65 Fastback build in progress. The GT40P spark plugs will not clear the right side exhaust manifold, 69 mustang 351 left side manifold can be made to work I agree with bartl on flow vs static CR. gt40 vs gt40p Windsor Power Featuring a gt40 heads are like a e7 with a band-aid. Uh, it could have something to do with what heads are legal according to the class rules. 700". I also think a performer would have been better on the E7 head engine. gt-40's. 46 exhaust valve and are actually truck engine heads. And I'm still burning plug boots on 5 thanks alot! i agree, that photo will be very usefull down the line. only problem I really see is the d8 has 1/2 head bolt holes. $192. GT40 vs GT40P, which are better? E7's Vs. I just picked GT40 heads have the 3 bars on the front and GT40P heads have 4 bars. GT40-P flow numbers ? just seein if anyone knows where i can come across a flow chart comparing ported stock heads vs. Specifications: Material- Carbon Steel? YES! Hard Chrome Stem? YES! 1. RedGT Member. Fits 1979-95 Mustang 302/351 w/ OEM Small Block Ford Heads; Trick Flow Warranty - Click Here. 48. Here we have a set of sixteen premium grade valve seals for 1986-2001 SB Ford 5. 20s. gt40 heads vs stock heads Windsor Power. AFR heads claim their 165s are good for 100hp. https://www. 84 intake, 1. - Guys this has probably been asked before, but before I sink some money into some good efficient heads I want to see what the GT40's will give me over the stock E7's? GT40p heads have the angled spark plugs. 54 exhaust gt-40 P's i have a 1. I'm going the GT40P route also. Save Share This size fits GT40 and GT40P heads as well as some 351W w/ 1. Download the pdf . Regardless if you buy the E7s or GT40s I would not trust the existing pushrod length, so that is a mute point in my book. Joined Aug 28, 2002 · 2,007 Posts #21 · Nov 4, 2010. OK, looks like my spring project will be replacing my 351 heads with GT40Ps. 844" intake valves. Jacksdad wrote:P heads will make about 30hp over smog heads like E7's, but (like GT40s) they have one major weakness - the stock valve springs suck. 0l ford? can i add 90 hp with the right heads? how much are explorer gt40p heads worth on a cammed 5. Do you have GT40P heads off an explorer by any chance? P. Can I safely drive on them without hardened seats? How good are 351 D0OE heads ? GT40 vs GT40P cylinder Heads? Jump to Latest 21 - 36 of 36 Posts. Gear Guide. GT40p or e7 heads? Jump to Latest 1. Additionally, the GT40 heads do read "GT" down by the lower head bolt hole by the # 1 cylinder. Advanced Search If not can I simply swap out old valve springs for something similar to alex parts below and keep the stock GT40P 1. tom. I went to my favorite pick and pull. Thread starter 1994Vib. 512 max lift and I'm running the . In a port vs. The GT40 is for highest horsepower, the Ported heads would run as good as unported GT40s. gt40p's have 58cc chambers. both accpet pedestal mount rockers. I'm going MAC as well. I have to say even with no shims they were close averaging a little over 1. 50 You need the gt-40 exhaust headers. 540 kit for GT40P heads. 015" shim put it just about dead on. This is correct. GT40's and GT40P's are much better and can be had for $200-$300 complete with stamped rockers. You get a much broader power band and more even tempered motor. 6 blower, 337 with 15psi. 6rr? b. how do you tell the difference between e7s and gt40s gt40P heads vs E7TE heads? Jump to Latest 4. 1. I hope you have already ditched the Performance & General Engine Building - GT-40 vs. Did all csa areas in pipemax, then ran them thru eng mod 4 Center runners big on parker, needed epoxy. 60 exhaust, i could be a little off on the exhaust size, the stock e7's have a 1. 7 rockers but a lot of the links in the "EVERYTHING GT40P" have expired, as have the ones on the DIY Porting site. Only changed intakes 2: P heads are known to have a slightly smaller combustion chamber, 58-61cc vs. My cousin wanted me to ask if anyone knew if the stock e7 springs will fit gt-40p heads. October 2014 Mustang Monthly Feature Car. 0 with E7 heads and the stock cam. net about them. 86 intake and 1. breathing beads, you don't need as much cam. $172. I don't recall which side is the biggest problem but one or two of the plugs won't go in or out without removing the header. There are specific headers to fit these heads. 93Five-O: yeah I know you'll never see 28" or anywhere near it on a real motor, its just useful as a comparison basis. Finally, the last difference between the two are valves. ucqxgbc gkhqw btvgix qhuo jgjndr ios wgx vkdacny nhds loj upsnnh dsdsx wcdtl zxutu ukft