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The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. Budget 300HP 302 Build AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. However there are plenty of factory heads that with the help of an experienced machine shop can be great. The hardest part of swapping the cam was just getting the timing cover off and back on again. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. Cloudflare Ray ID: 7a2e2d95dedea1e4 There are a couple of reasons for this suggestion. The specs are a conservative 212/218 degrees of duration at 0.050-inch tappet lift but offer a really nice 0.512-inch valve lift for both the intake and exhaust. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. The Fora platform includes forum software by XenForo. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. 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. The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. For a better experience, please enable JavaScript in your browser before proceeding. Using the manufacturer recommended springs for your camshaft are a safe bet. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. Im new and Im currently building a 302 on a budget and want to raise compression without milling heads but by pistons and I want to get close to 10:1. As usual, there is much more to this story. GT-40 heads HP increase | Mustang Forums at StangNet If you're not a header kind of guy, the repro 289 HIPO manifolds bolt up to the GT40P heads with plenty of spark plug room. Rowe studied engineering, philosophy and American literature at Central Florida Community College. 68stang351 Founding Member May 16, 2002 850 Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. Or just play it safe and let the fans ask away about another daring 5.0 TB bolt on or for an exciting surprise, do a LS______ fill in the blanks. 1.7 shaft rockers and beehives. This engine will be good for your 65 Mustang. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. Through Central Coast you can have the heads fully prepped for your combination. Torque on the other hand isnt something to write home about. 302 heads on 351w | ClassicBroncos.com Forum this is the price for one head. well i finally did my first ever carb build, ive always been an EFI guy Black 1985 GT: 408w, in the 6's in the 1/8 mile. This is what I recommend to everyone who is doing a budget 5.0 build. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. I'm also have the regular GT40 heads on my current build. Find many great new & used options and get the best deals for FORD GT40p 4 BAR HEADS IN GOOD CONDITION w/ONE BOLT BROKEN at the best online prices at eBay! I turned it because it was tired when I got it. The kit offers adjustable power from 50 to 250 hp with a simple jet change. If there isnt room without disassembling half the front clip on the car, then it might be easier to remove the engine and do the conversion that way. Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. I'm new and I'm currently building a 302 on a budget and want to raise compression without milling heads but by pistons and I want to get close to 10:1. Shop by category. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! We need a build on a 400+ hp 302/6 build. 302, GT40P Heads, E cam, 4 into 4, Holley 600, Mallory Unilite, Levy SD T5, 3.73, 15" Team III, firewall mod, trunk mod, trailer hitch, drivers foot box mod, front tow rings. Related Resources Mustang Generation Nicknames: What Do They Mean? I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. fordfan289, Aug 27, 2011 I have a 432 HP non Hi Po 289 I built. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. 302 with GT40 heads | Ford Mustang Forums Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. Pride is built, in your garage, with your two hands. A forum community dedicated to Ford performance owners and enthusiasts. We took the heads to Mike Slover of Slover's Porting Service in Sun Valley, California, to do this work, plus some basic pocket-porting to improve flowespecially on the exhaust side. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. According to his data and verified dyno tests with an EFI 302, you can go above this level if you port the stock, lower intake manifold, or upgrade it altogether. In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. Keywords Joined . It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. If you dont feel comfortable doing this higher a pro. As a final goal, we decided to bolt on a simple nitrous system and see if we could push this little small-block Ford to make some real power. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. gt40p headers | Maverick/Comet Forums We will go into more detail on the head mods in a later story in Junkyard Builder, so watch for it. With the engine reassembled, we boxed up our second camshaft and headed for Westech's dyno. With gt40p heads and 289 hipo exhaust manifolds changing sparkplugs is the same as the original 302 heads and manifolds, I use the spark plugs that are recomended for the explorer with gt40p heads and you can use straight or angled boots. For the cherry on top of this Blue Oval desert, we bolted Mike Thermos' simple Powerstar plate nitrous system under the carburetor, installed the 140-hp jets (55 fuel and 55 nitrous), and used the trigger to retard the timing on the MSD ignition by 8 degrees. JUNKYARD GT40P HEADS-ADD 30+ HP TO YOUR 5.0L (FOR FREE?) A forum community dedicated to vintage Ford Mustang owners and enthusiasts. This will keep you from dropping your overall static compression ratio and losing power. The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. the engine is carburated of that makes a difference. I'm 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. (Please note these are not GT40P Explorer heads). I just read about this build on the corral.net. What you are trying to do is to increase the amount of airflow through the engine in order to make more power. You should be able to get away with a 150 to 200 horsepower shot later, but it's best to start out small and work up. GT40Ps have 58cc. 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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The gt40p head is considered the best OEM 302 head made. Stock heads with a fresh 3-angle valve job, shorty headers, T5, 4.10s, stock Explorer intake and stock '88 GT short block with 140,000 miles on it and an E cam in it. . built one using a 91' HO short block with a set of AFR 165 heads, Weiand . The combination of this cam with your intake and headers will produce a very nice street engine. But the part about a cam replacement possibly being a labor intensive undertaking is correct. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. Install a set of GT-40P cylinder heads from a late 1990's Ford Explorer or a set of GT40 heads from an early 1990's Mustang 5.0L. This time around, we chose a shining example of this junkyard art form. They also have emissions legal heads as well. For a better experience, please enable JavaScript in your browser before proceeding. T5z and 3.89 9" TL rear. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. The HP DIFF column on the far right lists the horsepower difference between Test 1 and Test 3. The fix: basic power upgrades for a sluggish 302 Never not once have I ever seen a SBF rod bolt create a failure. Holley 670 street avenger carb. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. 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. The Fora platform includes forum software by XenForo. Ford offered a performance head that was a stock part on 1993-1995 Mustang Cobra models and pre- 1997-1/2 Ford Explorers and Mercury Mountaineers equipped with the 5.0 L engine called the GT-40 head (casting ID F3ZE-AA). I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. Over $2050 for the 165/185 renegades. There are caveats to this plan, however. The reply has so many assumptions that I cant even assume to know the answer. Not bad for off the shelf parts and a stock shortblock. A LOT of them do it these days. $700.98. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. This needs to be removed and different exhaust valves, retainers, and valve springs added to turn this into a decent street head. I am working on a set of iron GT40s hoping it goes faster. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. 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. 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. 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. I've not seen a set of longtubes that have an issue with GT40P's, either. FORD GT40p 4 BAR HEADS IN GOOD CONDITION w/ONE BOLT BROKEN 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. 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. We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. Both swaps made more sense when parts were readily available at the bone yard for cheap. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. You can find them on later model Mercury Mountaineers and several other Ford SUV applications. K.S. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. He'd be the best source. All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. ford 302 sbf gt40p v8 cast iron complete cylinder head and head bolts and head gasket set. If we subtract the 20 hp that the fan is worth, we end up with a gain of 25 hp. Hey Motorheadty,Like your comments,question for ya,I have a 92 convertible,just bought a 5.0 out of a 94 gt that was just freshened up top end,gt40p heads w/new springs etc for the new E303 cam,new FRP roller lifters,Crane 1.7 rockers,hardened push rods,double roller timing set,all put on a bottom end w/104000 miles,needless to say previous owner pulled said engine after 800 miles and now building a 351,I pulled engine down my machinest,putting forged internals in and bolting everything back together,I want to run about a 150 shot N2o,and iam going carb,wondering which intake would be best w/the 150 shot,heard that dual planes might not be the way to go? They suffered from poor aftermarket support up until about 15 years ago when it really came on strong. We then dyno'd the car without the fan to get some consistency and were rewarded with a peak of 316 hp at 5,500 rpm, and 348 lb-ft of torque at 4,000 rpm. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. While the heads were off getting a massage, we turned our attention to the cam timing. The only failures Ive had were timing chains and a couple broken rods in a mid 80s 302 with 200,000 miles on it that got about 35 lbs of boost stuffed into it when a pop off valve I bought on ebay failed. I spin it to 6500 and thats about it. GT40P heads? how hard to put on? how much HP and torque? REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. The 2 heads are about the same when looking at the numbers with the GT40p heads having a slight edge. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. Thanks for the help, I was planning on puttingin roller rockers or at least new springs, and that engine looks great, hoppfully mine will look at least similar to that one of these days. That's a 40 per cent increase in power from a simple head and cam swap, and one seriously happy Mustang owner! We've already been motivated to put this engine in a buddy's Mustang. This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons. people can stop saying that adding aftermarket cam with stock heads is a waste of time. The engine was only rated at 215 hp, but it at least had 9.0:1 compression. Most of them are aware of what changes need to be completed. this head is complete with new 1.837 int valves and 1.536 exhaust valves. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. No-option stripper- I like strippers. 302 explorer short block with roughly 80k miles GT40's from a local u pull n pay ($97) weiand x-celerator trick flow stage 1 cam 650 holley double pumper car made 322/329 SAE . Nice to see actual dyno results instead of "butt dyno" guesses. You need to check. How much HP and torque do you think I. The "P" heads flow better. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . You'll have to plug the oil hole that is in the engine from the old oil dipstick. If you're going to use the stock 289 heads, install 1.84-inch intake valves, then port the intake and exhaust; these mods will net you about 185 cfm of intake port flow at 0.50 lift. FORD GT40p 4 BAR HEADS IN GOOD CONDITION . The GT40P heads flow a lot better than stock 351 heads. Add 40 to 70 HP to your 302 yourself - Factory Five Racing Forum Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. Would have liked to see a comparison done on the same short block using a set of decently-ported early non-Thermactor iron heads Tracy Blackford, 65 Mustang FB, 331 built with 289 H beam rods and 383W piston, 282S cam, self ported '70 351w heads, Dougs Tri-Y headers. Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. Thank You. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. 68 XR7 & 68 M-100. This will cost additional money but is still worth it, in our opinion. The valve seats have been cut on a . Thanks. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. When building an engine there is a lot to take into consideration. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. this head fits years 95-01 explorer mountaineer mercury mountaineer . 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. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. Those are really good numbers. Stock Ford 351W 4bbl dyno numbers - Don Terrill's Speed-Talk If they are cheap enough, take them anyway. I got rid of the carburetor and went with a F.A.S.T. Assuming this will be a daily driver engine, a short duration camshaft, especially when combined with a four-barrel dual plane intake manifold and headers, will deliver extremely snappy throttle response and the whole combination will increase the torque and peak horsepower by somewhere in the neighborhood of 20 to perhaps 35 horsepower. It took him and yours truly eight hours from start to finish, using air tools and a lift to gain access to the header flanges. I guess someone could just do a basic valve job and throw on the GT40 upper/lower intake for a cheap HP boost. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. 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. We also discovered some issues with the GT40P heads that required changes, so we added valves from Manley that eliminated the exhaust-valve rotators and allowed us to set the proper valvespring installed height. Motor is going into a Ranger. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. Always the weak area in the 289 and 302 is the tiny 5/16 inch connecting rod bolts and the miniscule intake and exhaust ports. Overview. Free shipping for many products! Cant wait to try um out. Depends on the budget. For additional insurance, we also added a set of ARP head studs, which are stronger and offer better thread overlap than factory bolts, which helps prevent pulling threads out of a used block. But don't think that adding a bigger camshaft will make more power. This will follow the guideline of a 1.6 rocker baseline and factory bottom end 79-95 related 5.0L Mustangs only. Application Fits 1979-95 Mustang 302/351 w/ OEM Small Block Ford Heads What Cam and Springs to Use for GT40 Heads made more power everytwhere and 40 hp is respectable. We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR ***Most important is theStupid question is the one that was never asked!*** Mar 23, 2004. So I've got the motor and heads already for my maverick project. An aggressive cam will wake it up a bit. A good port job can set you back another $500-$1,000. Joined: Sun Mar 15, 2009 9:31 am. Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). $930.00 + $55.00 shipping. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. Location: Re: Stock Ford 351W 4bbl dyno numbers. Car Craft mag. You could run a thinner head gasket as well. Here a comparison of different heads on a 302: I'm very happy with my GT40P. 351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum Where they differ is the combustion chamber size. A trip to Orlando Speed World provided us with updated quarter-mile times. I've got gt40p heads for it I'll be running, and can't afford better . Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. Have fun, be safe, enjoy. Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. And remember ENGINES have been being built/rebuilt/modified for years. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. Part of this reason is due to its inherent strength and simplicity, but a lot of it has to do with how little Ford has changed it over the years. JEGS High Performance. When compared to the new generation of performance engines on the market today like the 5.0L DOHC Coyote engine, your engine will not come close. 1983 Mustang G.T. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. GT40s have 64cc chambers. As a matter of fact, Central Coast has an '89 coupe with GT-40P heads that has run a best of 11.98 in the quarter-mile. Just got through porting one of my gt40p heads today. #3::: Do your homework,get quality parts,dont skimp. Weiand 7515 xcellerator intake. i'd love to use these heads,. However, since Holten's car has an E303 cam, we didn't want the pistons and valves becoming too close, so we chose the 1.6 rockers. Ford Explorer Mountaineer 5.0 Ohv Iron 302 Sbf Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. check out the. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. This test went so well that we were eager to see what the slightly bigger cam would do. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. 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. Over $2050 for the 165/185 renegades. He'll have to get a gear for his distributor. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. 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. I got a GT40P off the assembly line years ago. 302HO with gt40p heads | Mustang Forums at StangNet 69-70 302 heads (the ones with the heart-shaped combustion chamber) Any early 289 heads for the chamber size (but you'll have small ports & valves w/all that CR) Flat Ernie, Aug 27, 2011 SHARE POST #8 fordfan289 Member from indiana correct me if Im wrong but cant you use 351c heads and get the same thing as a 302 boss. Maybe I'll think about a cam swap? Even with a stock Mustang 5.0 cam makes good power. They fill that spot between power and budget. Anythoughts? The question was whether we wanted a torquey small-block or a more cammed-up rpm engine to boost peak horsepower. These are some of the pictures I have showing the Explorer manifolds. Ha! $700.98. For real performance, stock E7TE heads leave a lot to be desired. Tim's junkyard refugee survived the beating and we had a bitchin' story. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. GT40 Heads On A 289? | Ford Muscle Cars Tech Forum You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. THANKS VERY MUCH! Fastest e303 5.0l's? - FourEyedPride.com Enter your search keyword. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. Commonly referred to as Explorer heads, GT-40P iron castings are found on current 5.0-equipped Explorers. at the crank. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. Let us explain. Save narve00 The longer duration created a slight loss of torque below 3,300 rpm compared to both previous cams, but beyond that mild loss of power, the bigger Voodo out-powered its smaller cousin, cranking out a peak torque of 355 lb-ft at 4,300 (a gain of 7 lb-ft over Test 2) and charging to a peak horsepower of 376 at 6,000 rpm. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 I added a link to it. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I need that part number too! I plan on running a AFM b31 cam too which has relatively small duration for the intake valve. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. I may do some port matching and a little cleanup, otherwise just a set of springs and cam and see what I have. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. Ive bought wrecking yard SBFs and put 20 lbs of boost to them and spin them to 7000 and made 500 HP with several of them. Stock valve sizes? I have a 66 mustang with its original untouched 289 with over 140 k on it that Ive been running a blow thru turbo making 14 lbs of boost on for the last 5 years and its never given me a problem. Once the headers are in place, then you can consider if you still want more power. I'm sure the dyno operator used some goofball correction factor to make the numbers look higher. These heads have been remanufactured using refaced reclaimed Factory Valves. Then why did you port the heads and how do you know if you made an improvement. Yes- thank you. never messed with the timing, its at 35* total . There are a lot of variables that must be addressed to give a better estimate, but a good basic estimate is 20-40 HP at the crank. Yea. Very true about finding them at the local yards. (its not their engine) After we installed the heads and with the fan off, he ran a 12.46 at 107.9. Some ideas never go out of style. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page.