Gt40 Heads Vs Stock

you can see the 3 bars on the heads in his pic says its a GT40. 84 intake and 1. It now out flows a GT-40 & Cobra intake according to flow numbers provided by Richard Holdener's 2000 Dyno Pulls book. dyno tested at 290 hp (flywheel) and 235 Rear wheel hp. The following day, April 17, 1964, people "attacked" the Ford showrooms. any input would be great!. 87-93 mustang 5. please help. Both valves had flash chrome plated stems for wear resistance. Performance & General Engine Building - GT-40 vs. Not the same stuff you find in Ford car, yet Ford product. The lower intake is ported to match the FelPro 1250 gaskets. It will pull much harder over 3K RPM. 46" valves The GT40 Heads have 65. GT40 Cylinder Heads. The 2031 cam seems to be some kind of a "crap shoot. As for the 93-95s being slow, they should have no problems taking out '99+ GTs stock vs stock. Aerohead Racing Component is a stock division of Indy Cylinder Head. #1---Head Flow Charts & Comparisons : 12/23/2019: There are enough flow numbers on our website to keep everyone busy for a while. Let’s start by reviewing the evolution of these heads. If you have 4 lines its a GT40P head if you have 3 lines its a GT40 head. Aclot of racers that have to meet stock OEM heads requirements, also uses these heads. UK dealer Girardo & Co. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members) i'd love to use these heads,. : sent from my Samsung Galaxy S II Epic 4G Touch :. Get wut im sayin alumin cost 3x more the stock gt40. with the limitations of the stock block i don't see why you would want to spend any $$ on hp heads. Also the GT40P's differ in emissions, whereas my stock heads and the GT40's have vacuum out of the back of the heads into the exhaust below. Even vs stock heads your only talking about 20-30 hp gain total so there is no big power gain with them. His Porsches, Cobras and Ferraris were also all genuine. These headers feature extra thick 3/8" CNC laser-cut flanges on the head and collector to prevent leaks caused by warping. com 1965 Ford GT40 Active Power Cars Stock NY74779 Exterior Color Light Blue Interior Color Black Mileage 194 Engine Size 5. Ford later released GT 40 and GT 40 P iron heads for the 5. Not to be an asshole but you will not notice much HP differences with the f303 vs a stock cam. Also they're faster burn heads because of a revised combustion chamber. just curious at to which would be better. If you're looking for a set of headers for your five liter equipped Fox Mustang, you need to check out these shorties from Ford Racing Performance Parts. The fittings are black anodized billet aluminum and attach to the corners of your GM LS cylinder heads. Like other stock castings, there is plenty of room for improvement with this head. The M-9430-P50 headers will fit stock in most aftermarket cylinder heads and are widely known because they allowed for the extra plug clearance needed on the cast iron GT40P cylinder head. the reason i am selling is because i am going with a big block motor. Each casting is handled individually and machined to OE specs on top of the line equipment to ensure high quality product. 0 stock heads If you just want a decent head for little $$$. Ford's answer was that the special heads were the ones used on cars built in Canada. 94 ECU in control of Motor and Nitrous Oxide, with Launch-Anti-Lag. The minute one of us " assumes " you have a stock engine, and then find out you have a non stock cam or pistons etc. With the stock E7TE heads, you will reuse your pushrods and rocker arms. Well, stock 351W heads flow better then stock 302 heads and GT40 heads flow better then stock 302 heads. We can special order the item for you. Note: No cam seals have been installed on overhead cam cylinder heads, as one comes in your gasket set. The heads are torqued down, and new Crane 1. Shop in stock and ready for shipping right now! Replacement Engine Parts Je Cut Ring Head Gasket For Bmw E36 S52 M3 87mm Bore Turbo Boost Spacer. I used the FRPP "Y" heads for my personal comparison. they dont flow enough on a 302 so dont bother with putting them on a 351. So, You Think You Want To Port Your Intake Huh? By: tmoss OK, well I guess I can try to convey some of the techniques I use in porting the stock 5. Shop in stock and ready for shipping right now! Replacement Engine Parts Je Cut Ring Head Gasket For Bmw E36 S52 M3 87mm Bore Turbo Boost Spacer. they have been ported and polished with a felpro 1262 gasket on the intake side and a felpro 1450 on the exhuast side. They have custom designed a head to meet the needs of the SBF world, while keeping the quality high and the price reasonable. If your looking at your engine from the front of your car. 0 mustang GT iron heads 156 CC 116 CC stock late model 5. I'd stick with the stock heads, have a set of 351W valves put in as well as some port work. com or call (814) 237-4990 Ported Stock Lower Intake. The following bench flow data was taken from these articles. My specs: 1987 5. o car engines. just curious at to which would be better. I got a Boss Katana 100 to compare the 2 and for all the hype it gets, I admit it's a good bang for your buck, but not without flaws. Of course they simply bolt on and yes no 5 plug is a little cramped etc but they do bolt on with no fuss and they will work fine. I believe the 94-95 gt's also had the gt40's stock. 5 cc to raise the compression ratio a bit although the official compression ratio is 9. i have for sale some GT40 aluminum heads for a 302-351w based motor. The differences are not huge. 8 Mustang with a 1990 Super Coupe motor, block bored 30 over with larger forged pistons, gasket matched ported SC heads, gen 4 Eaton M90 blower pushing 14psi, front mount CX Racing innercooler, BBK cai, BBK short throw shifter, Pypes high flow cats with Pypes x pipe, Flowmasters, Ford Racing aluminum driveshaft, 8. Early Explorer engines (1995 to 19971/4) came with GT-40 Heads, easily indentified by the 3 vertical ribs on the front and rear of the heads or the "GT" cast into the corner of the head just outside the valve cover. Even vs stock heads your only talking about 20-30 hp gain total so there is no big power gain with them. 0 & GT-40 Intakes. 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? We compare the GT40s to modern cylinder heads as well as other heads from the era. To see ads from the August, 2019 issue, you must be a subscriber to Hemmings Motor News. Car details. There are tons of write ups on the various Forums on the flaws in Pro Comp products. 75mm thottle body enough? also, do 1. Small Block Ford Canted Valve Cylinder heads for Windsor Series engines. Hot Topic: Iron vs. How To Identify GT40 Heads. putting a nice box intake on top of it. I don't want this to become another Grado bashing thread, because either the RS2 is not that good of a value or SR80i is a terrific headphone for the price. any ideas?? im looking for a tad more power down low than the e303 and a better idle but still lopey. 351w with Gt40 Heads. This is one of our customers cars and his results so far. IV and the Chaparral 2F at the head of the grid. head # f77e-aa knock sensor in block. the 96 to 97. 7 roller rockers too. Get the best deal for Cylinder Heads & Parts for Ford GT40 from the largest online selection at eBay. EXOTO '66 Ford GT40 MKII LeMans. 7 roller rockers on the 393W I'm building for my Crown Vic. Which would be the better buy between only these parts For most power and torque? price not an issue. Small Block Ford Cylinder Head Porting e-mail us: shadydell2005@aol. 1 product rating - comp cams ford gt40 heads valve spring set (16) m-6513-a50 972-16. Find Gt40 in Canada | Visit Kijiji Classifieds to buy, sell, or trade almost anything! New and used items, cars, real estate, jobs, services, vacation rentals and more virtually anywhere in British Columbia. The ford explorer upper is the best flowing of the GT40 upper manifolds due to it's chamber design, but the lower is the restriction. Ford GT40P Power Heads 289 GT40 P. Find FORD 5. I also have a brand new set of Comp Cams valve springs for the E303 cam that I'll throw in for an extra $100. 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. 1 product rating - comp cams ford gt40 heads valve spring set (16) m-6513-a50 972-16. The data was all given at 28" of water. He is running our Race ported GT40 manifold and our Stage 2 ported TFS heads with a mild TFS Stage 1 c am on a stock bottom end 302 with a mild turbo setup. Ford Mustang Shelby Gt350 Voodoo 5. The cast iron GT-40 cylinder heads may be identified by casting marks shown here. Best deal would depend on the parts used, if the GT40's are new and have a SS valves, Good Springs, Ect its good deal. i have for sale some GT40 aluminum heads for a 302-351w based motor. Link your active subscription or subscribe for instant access. the Flatheads through 1948 and consisted of two halves which were fit on the crankshaft throw, two rods were then fitted one each bearing meaning you only have (4) rod bearings for your (8) rods. 0L engine with the Ford Racing Turbo-Swirl GT40X Aluminum Head. accepted this explanation. New-car reviews and in-depth analysis. 0 Cylinder Head Comparison Several years ago, Muscle Mustangs and Fast Fords began extensive testing on the available heads for the 5. Buy right now!. In addition to slightly better flow, p's also have smaller chambers so they give you about a point of CR over the regular gt40's. these heads are bolt on and go. Also keep in mind that the GT40 heads are not the best heads available for the 351W engine. Just looking to get rid of the restrictive heads and go with something niceobviuosly not trying to break the bank either. If you can find a 96 exploder like i did you get the gt40 cobra heads, not the gt40p's which require a specific header and have a revised plug location. These GT-40 heads are casting # F3ZE-AA. You must also drill the steam holes in the heads to match the block holes found in the 289 / 302. 0L In To A 1998-Up Ranger 5. I will say, if your going to just leave them stock, dont bother, but with porting they'll be good, i would rathe rhave ported e7's with some good springs, then some unported gt-40 ironsmy. An overview of the difference between GT40p top end and GT40 top end. We are offering a pair of original Ford Cobra 5. Showcasing in stock and ready for shipping today on the internet. Presenting 302 Engine available to buy today online!. Within the major head groups, there were also differences in chamber designs, with small chambers, machined chambers and large chambers. Heads were milled from 64cc down to 62. No more guess work. The data was all given at 28" of water. Each casting is handled individually and machined to OE specs on top of the line equipment to ensure high quality product. 2 Cylinder Heads Coyote 5. If they are stock used ones the new Jr's are a better deal. GT40 vs GT40P Head / Engine / Manifold question Discussion in ' Stock 1995 - 2001 Explorers ' started by JCat , November 19, 2014. › Best heads for 302. 0 GT40 cast iron cylinder heads. 0- GT40 heads although - even the Cobra one's NEED a valve spring upgrade (Trickflow make a very nice kit) - the stocker springs suck I wouldn't use them. Please login or I figured I start a new topic and go step by step from stock untouched heads to the final. On April 16, 1964, the day before it's release, Ford ran simultaneous commercials at 9:30pm on all three major television networks, ABC, NBC, and CBS. While there is an abundance of after-market cylinder head choices for the Windsor family of engines, many do-it-yourselfers will choose to use original cast iron offerings for originality or to cut costs. these heads are bolt on and go. We can special order the item for you. The differences are not huge. I can't remember the exact numbers of the GT40 and 351W heads so I don't know if they flow better. 84-inch) and exhaust valves (1. Real - Written by Tim Suddard-From the Sept. powered by a Ford V-8 fitted with Gurney-Weslake cylinder heads, I'm proud to point out. This is preliminary tuning and will be updated soon. yes it will be a noticeable difference - the stock EFI intake is the bottle neck of the 5. ANY set of gt40's. 0L In To A 1998-Up Ranger 5. In 1996, Ford used GT40 heads on Explorers, Mountaineers and Lightnings, until the GT40s were replaced in mid-production 1997 with upgraded GT40P heads. Welcome, Guest. 5 cc to raise the compression ratio a bit although the official compression ratio is 9. I can't remember the exact numbers of the GT40 and 351W heads so I don't know if they flow better. the reason i am selling is because i am going with a big block motor. If you are boiling c. Porting and Flow testing GT40 heads. The 351 block is very similar to the 302. Small Block Ford Cylinder Head Porting e-mail us: shadydell2005@aol. the 98-01 were the Gt40P heads. On the stock heads, none of the valve is even close to being visible. Home » Used Performance Parts. 7 roller rockers on the 393W I'm building for my Crown Vic. , all time has been. The smaller GT 40 is a 40-watt amp with two 6. " - Martin Luther King Jr. 7:1 pedestal mount rockers. FORD, SMALL BLOCK 302 HO & GT40P, GT40. 0 lower intakes. That's what we see in the next picture. You can pick up a set of GT40 heads for much less than 1500, check ebay and somewhere in the 500 range seems more likely. accepted this explanation. Buy Your Mustang Intake Manifold Gasket Set GT-40 5. Testing showed that the GT-40 intake was worth nearly 20 horsepower over the stock 5. Which would be the better buy between only these parts For most power and torque? price not an issue. Gooding & Company is predicting a selling price between $2 million and $2. 0L HO, stock bottom end w/Boss 302 windage tray E7TE heads, ported with GT40 valves & valvetrain B303 cam 1. Get a low price and free shipping on. Rear intake bolts broke in head. they have the letter s stamped in the corner and the number 19 stamped on the opposite corner i think if they are gt 40 or cobra heads i plan on replacing my stock heads with these. Are you ready for a micro-history lesson? I bet you didn't know that Henry Ford II nearly bought Ferrari in 1963. On the stock engine 1UZFE injector size are 220 cc/min. The bigger difference between the two in stock form is the compression chamber's cc. Aluminum heads have higher compression, are lightweight and have better ports when compared to iron heads. Performance & General Engine Building - GT-40 vs. 11/03/95 and 2/07/96 ported GT-40 heads and ported E7TE stock heads. Get free stock quotes and company summary for up to 25 stocks at a time for NASDAQ, NYSE, and Amex companies at NASDAQ. dyno tested at 290 hp (flywheel) and 235 Rear wheel hp. By using the P's you can save money on the rest of the valve train, pedestal rockers and push rods. Ford V-8s have always struggled to make power because they've always been limited by factory cylinder head design. i have for sale some GT40 aluminum heads for a 302-351w based motor. Shop Hunting Recovery Magnet Amp now! EXOTO '66 Ford GT40 MKII LeMans Afficionado Deluxe Trio Gift. The F303 powerband is coming on when the stock parts putter out. This 1965 Ford GT40 for sale has a 347c. Today, life is a bit easier! Trick Flow® GM LS engine steam line fittings are available to upgrade the factory steam tubes of your modified LS-powered cars and trucks to update your race car plumbing system. When the Sanctioning Body found out about the special heads, they asked Ford what was going on. which smallblock ford heads to use ?gt40 or 351w out the 351 heads and will now look at finding a set of gt 40 heads or porting the stock ones. 0 COBRA GT40 CYLINDER HEADS. 5-inch speakers, and it has five front-panel control knobs (gain, volume, treble, bass, master). This article on Jason's GT40 was originally published in the August 2017 issue of Street Machine. From April 2006 to May of 2009, Here just outside of Reno at the Reno-Fernley Raceway,we hosted 4 consecutive years of Historic Races featuring many great Vintage race cars and had 4 Grand Marshals as guests to honor the Racers and to help promote the event and facility. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. Outstanding variety of One Stock Accord and. We walk you through what GT40 heads are, why they are a popular upgrade, and what kind of power increases you can see. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. i have a 408 that i'm getting ready to put victor jr heads on, and then my vr4 supercharger. the Flatheads through 1948 and consisted of two halves which were fit on the crankshaft throw, two rods were then fitted one each bearing meaning you only have (4) rod bearings for your (8) rods. First step add $ 100, $ 75 second step, $50 third step. The M-9430-P50 headers will fit stock in most aftermarket cylinder heads and are widely known because they allowed for the extra plug clearance needed on the cast iron GT40P cylinder head. One little thing they did to regain some performance was enlarge the exhaust valve and bowl area. , all time has been. The lower intake is ported to match the FelPro 1250 gaskets. The following day, April 17, 1964, people "attacked" the Ford showrooms. That's faster than both the guys that were arguing the E'bock vs. Ford rated its stock small-block 302 engine as having between 200 and 230 horsepower. The ford explorer upper is the best flowing of the GT40 upper manifolds due to it's chamber design, but the lower is the restriction. Plug angle of the p's are an advantage on our upswept marine manifolds. quasi skateboards apparel. No more guess work. These heads used the "dry-deck" method, meaning the coolant circuit for the block was separate from the cooling circuit for the head The "dry-deck" method of design is intended to strengthen the block by removing the need for open coolant jackets around the cylinder and reduce hot spots by providing more direct cooling. Although not technically a new release, if there was a model that enthusiasts in our hobby wanted produced, the GT40 would clearly be near the top of the list. Back then, there wasn't a. This includes 260, 289, 302, Boss 302,. In addition to slightly better flow, p's also have smaller chambers so they give you about a point of CR over the regular gt40's. com or call (814) 237-4990 Ported Stock Lower Intake. If you use this intake with heads that flow more than 210cfm, then you will benefit from porting the lower intake. Begin with a clean work space. First on the to-do list was to run the 5. Best cam for GT-40. The Trick-Flow 165's would be excellent on your 289 also the GT40's are now available in an improved flow aluminum version thru Ford Racing and available from Summit at around $900 a pair. 7:1 pedestal mount rockers. they dont flow enough on a 302 so dont bother with putting them on a 351. The flows are similar but, where the P's have the advantage is in combustion efficency. If you are boiling c. I can't remember the exact numbers of the GT40 and 351W heads so I don't know if they flow better. If you have noticed Ford replace the regular cast iron GT-40 heads which is the 69-70 head design with the GT-40p's because they are better. A GT40 That Beat Ferrari at Le Mans Is for Sale;. A LOT of you are probably thinking: “Wait, what? Why is there a GT40 in Street Machine? This mag is for people who pour their blood, sweat and tears into building. January 16, 2015 by Muscle Car DiY. ported stock heads (depending on if they were ported properly) will outflow a set of untouched gt40's. Stock air flow on this head tops out at 190 cfm intake and 128 cfm exhaust. " On the corral site, most people who have installed this cam had to buy longer pushrods and still shim the rockers. Ultra Thick. Recommend 3. Cast Iron GT-40, and Aluminum GT. And if the “off boost” is where we drive 70% of the time, then the higher flow numbers of a “larger valve” head means slower moving air and a low to mid range loss where we don’t want to lose it. dyno tested at 290 hp (flywheel) and 235 Rear wheel hp. Cheap easy Horsepower for your Foxbody Premium Fuel Mag. they dont flow enough on a 302 so dont bother with putting them on a 351. Technical Information for Factory Mustang 5. 0 GT40 cast iron cylinder heads. Great with TFS or Edelbrock heads. this is with the stock HO cam too. com or call (814) 237-4990 Ported Stock Lower Intake. 0L Cobra 1986-1993 from CJ Pony Parts, one of the industry leaders for Mustang Parts and Accessories. I'm sure once you put on a decent intake, cam and headers it would help get you up closer to 300. You still need to overcome the fitment issues associated with the GT-40 manifold however. roller cam. Stock flow on cylinder #5 was. They also installed GT-40-type cast-iron cylinder heads, the tubular “tuned” manifold, tubular stainless-steel headers, larger intake (1. Will E7 heads produce more flow and power over the stock H. com - FashionDee. Performance & General Engine Building - GT-40 vs. No more guess work. GT-40 heads and Trick Flow heads, among many others, can also be used, according to your budget. 0 Flow - Porting for Small Block Fords 5. As for the 93-95s being slow, they should have no problems taking out '99+ GTs stock vs stock. 0L In To A 1998-Up Ranger 5. BES Racing Engines now offers complete cylinder head packages. There were minor revisions over the years, some slight differences in port size, but for the most part they are the same. 1 product rating - comp cams ford gt40 heads valve spring set (16) m-6513-a50 972-16. We took my buddies car to the dyno with both sets of heads, the GT 40's and the E7TE's. Cylinder Head Design Let us help you design new valve geometry and port shapes for custom projects. head # f77e-aa knock sensor in block. The 1996-97 models got the normal GT-40 heads while the 1998-2000 models got the revised versions, or the GT-40P. Shop Flat Pushrod 7 today online! Highlighting our robust group of flat pushrod 7 in stock now!. with the limitations of the stock block i don't see why you would want to spend any $$ on hp heads. 5 1600cc These are awesome heads with NO ISSUES) Complete Stock with Stainless Steel Valve Upgrade (Better Choice with todays fuel, always run Super Unleaded in Air-Cooled motors) Complete Stock w/Hi-rev springs. com gt40 heads are like a e7 with a band-aid. I've heard that the aftermarket GT40 heads (cast iron) are supposed to add 30 horsepower to even a stock mustang GT. Hey guys! tried to upload last night but youtube crashed out lol. The gt 40's ported and polished made 270 hp at the rear wheels, the E7te's made 254hp fully ported and polished. Our combinations are proven. When the Sanctioning Body found out about the special heads, they asked Ford what was going on. The GT40P does have a slight edge over the GT40 cylinder head because of its smaller chamber volume. Gt40 Heads Vs Stock.