302 with gt40p heads horsepower

GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . There is a better way. Gt40p heads - FourEyedPride.com Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. JavaScript is disabled. '85 GT vert two tone (white on charcoal)white leather, http://www.facebook.com/groups/233213650060739/, http://www.summitracing.com/parts/TFS-2500100/, ascMcLaren & Motorsport/Grand Prix IV Capris, RHD and Other International/Export Models, Mods, Maintenance & Mechanical FAQs/Archive, If this is your first visit, be sure to Ford Factory 5.0 Performance Cylinder Heads. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. Also, the spark plug angle makes it a pain. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. I plan on running a AFM b31 cam too which has relatively small duration for the intake valve. This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons. Once the headers are in place, then you can consider if you still want more power. 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. That's more than enough to feed a power-brake booster. How to Build a Cheap Drag Racing 302 Ford Motor | It Still Runs Tim's junkyard refugee survived the beating and we had a bitchin' story. The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. GT40 Heads On A 289? | Ford Muscle Cars Tech Forum SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. You keep stock drivability, and stock gas milage if you can stay out of boost. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. As usual, there is much more to this story. Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. The heads got a 3 angle valve job, new valves from speed-pro and all the valve train was from crane that matched the current hydraulic cam. If the head bolt holes are 1/2" or slightly larger, ARP makes the washers and can be sourced from Ford Racing or ARP through a speed shop or Summit, Jegs and PAW among others. Just got through porting one of my gt40p heads today. It runs smooth but seems lazy. Im a different animal. Cant wait to try um out. However, when we dyno'd the car before installing the GT-40P heads, the fan was on the car. 1996-2001 Ford Explorer 5.0L V8 Specifications 97% Positive Feedback . I must agree with Jeff Smith. We know what you're thinking--only two-tenths from an extra 45 hp? We started with a 120,000-mile 5.0L out of a Ford Explorer, removed the EFI and DIS, and pocket ported the stock GT40P iron heads with stock valve sizes. Nice to see actual dyno results instead of "butt dyno" guesses. Yes- thank you. the springs are new stock oem ford. A COMP hydraulic roller cam we found works well with this combination. He has worked as a tractor-trailer driver and mechanic, a rigger at a fire engine factory and as a race-car driver and builder. check out the. I'm running BBK un-equal length shorty's, and I'm able to get all the plugs in, tight, and all plug wires on. Torque on the other hand isnt something to write home about. this head fits years 95-01 explorer mountaineer mercury mountaineer . Because of this, your tuneup will probably need to be modified. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. I got lucky and found a complete Explorer GT40P engine online. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend - I have a 1989 f150 with a 302 5 spd. I need that part number too! Im 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. Good on ya Jeff Smith. As with Chevrolet's small-block engine, the aftermarket has had dozens of years to expand the range and reduce the cost of the parts they offer for this engine. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Dec 8, 2011. With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. I got lucky and found a complete Explorer GT40P engine online. Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. All this is worth it. The kit offers adjustable power from 50 to 250 hp with a simple jet change. Learn how your comment data is processed. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! Understanding Ford's Fox Body GT40 Cylinder Heads - CJ Pony Parts GT40P heads, 302 and Victor Jr. intake: - Factory Five Racing Forum . hole size 302 is 7/16 and 351 is 1/2 Add 40 to 70 HP to your 302 yourself - Factory Five Racing Forum In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. Now he serves as a regular contributor to OnAllCylinders. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. 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. 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. The older pushrod engines just dont offer the same kind of power potential for their displacement and it all has to do with cylinder head flow. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . We compare the GT40s to modern cylinder heads as well as other heads from the era. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. Now we know why Dennis Hilliard of Central Coast Mustang is so high on these heads. 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. That said there are some better aftermarket options for heads also. The GT40 heads have thermactor holes built in to connect to the EGR/smog equipment whereas the GT40P heads use an external EGR connective system. This engine will be good for your 65 Mustang. Adding the headers may also require a slight increase in secondary (and possibly primary) jetting to ensure the proper air-fuel ratio, but thats also an easy tuning change. We probably could have coaxed an even 300 hp out of this stock configuration, but with such good numbers, we decided to jump right into the first Lunati cam. Choosing pistons to complement GT40P heads - MustangWorks.com The gt40p head is considered the best OEM 302 head made. Car Craft mag. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. At the dragstrip, we gained two-tenths and 2 mph. fuel injection system . You can use the stock roller lifters with any size cam you want. For all of us interested in Gt40p heads. I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. We will go into more detail on the head mods in a later story in Junkyard Builder, so watch for it. He'll have to get a gear for his distributor. I was looking at putting on the GT40P heads on. They suffered from poor aftermarket support up until about 15 years ago when it really came on strong. Mild Build Gt40p 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . A forum community dedicated to Ford Mustang owners and enthusiasts. Ha! This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. This will keep you from dropping your overall static compression ratio and losing power. 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. This website is using a security service to protect itself from online attacks. Joined . Ford 302W / 5.0L History & Specifications - The Ranger Station For 2018, the Coyote makes 460 hp. Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. Not *as* good as the GT40p heads, but I'd prefer to not have to worry about exhaust fitment issues, or have a narrow range of what I can work with. A trip to Orlando Speed World provided us with updated quarter-mile times. All costing in the end at least another $2k. #3::: Do your homework,get quality parts,dont skimp. Since the engine is nearly stock, we would want to choose a relatively mild camshaft with somewhat more lift and duration than stock, but again not going too aggressive. They also have emissions legal heads as well. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. Shop by category. Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. So . But what we were most impressed with was the solid gain in torque over the smaller Voodoo cam from 3,500 and up. MAC is the only manufacturer of these headers, and the parts we installed fit like a glove with no problems whatsoever. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. The best thing to do would be to use a specific break-in oil for the first 200 to 300 miles of use to reduce the change of a potential problem with undue wear. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. 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? Sponsored. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. Manual trans. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. The reason for this is that we're actually replacing mildly worked E7TE heads. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. Jeff Smith: It would have been better to know a little bit more about your combination, but the short answer is yeswith a hydraulic roller camshaft, assuming the lifters are in good shape and the roller wheels show no unusual wear, they can be re-used on a new cam with no danger of adverse effects. how hard to put on? We decided to test both ideas, so we ordered two roller cams from Lunati: a shorter-duration cam that would deliver decent idle vacuum and maybe make around 320 to 335 hp, and a longer-duration version that might push the horsepower up to perhaps 350 hp. Our recommendation would be, rather than change the camshaft, you might want to look into adding a set of long-tube headers and a dual exhaust if the engine is not already so equipped. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. But don't think that adding a bigger camshaft will make more power. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. i know a guy who used to build race engines so he has all the right tools, how much would it help to get the heads ported and polished or anything else he could do to them. I love my setup and it is very strong engine. Skip to main content. How to Get More Horsepower Out of a Ford 289 | It Still Runs Upgrading Fox Body Cylinder Heads - AmericanMuscle.com Because of this, your tuneup will probably need to be modified. Instructions on porting the GT-40p heads here. A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. Theres many options available for a little more power. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. 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. If they are cheap enough, take them anyway. Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. Do you guys have part numbers for the spring kits? JEGS High Performance. I had a set of 69 302 heads I ran for a while . 1.7 shaft rockers and beehives. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . Let us explain. +1 I would go with the regular GT40 heads. Install a set of 1.7:1 roller-tipped rocker arms on the heads. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. GT 500; Posts: 8496; Location: Brisbane . If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. never messed with the timing, its at 35* total . This time around, we chose a shining example of this junkyard art form. Most all long tubes come out far enough to clear and other short tube headers will work but there is clearance issues on two of the cylinders. A forum community dedicated to Ford performance owners and enthusiasts. For the most part 302 heads and 351W heads are the same. The valve seats have been cut on a . With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. That's fantastic for the minimal investment we made. We've already been motivated to put this engine in a buddy's Mustang. What Are The GT40 & GT40P Heads? - LMR.com Free shipping. All in all, the addition of GT-40P heads to any 5.0 Mustang is a worthwhile venture, especially if you're on a budget (aren't we all) or shooting for the Trophy Stock title. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. There are a couple of reasons for this suggestion. 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. GT40s have 64cc chambers. If you're running a stock cam, 1.7 rockers will work perfectly. $169.50. 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. that is a healthy budget deal. Some ideas never go out of style. But dont think that adding a bigger camshaft will make more power. We decided on a Powerstar kit from Nitrous Supply, owned by our good friend Mike Thermos, who was one of the original nitrous kit suppliers back in the early '80s. just curious. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. Sponsored. I am very happy too. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. This is an older thread, you may not receive a response, and could be reviving an old thread. 99 Explorer engine (302) with GT40P heads - Ford Muscle Cars Tech Forum Gt40/gt40p Heads On A 351w Questions - StangNet Finally, we exchanged the Explorer's EFI manifold (which is a pretty good manifold in its own right) for an Edelbrock Performer RPM Air Gap intake and a Holley 750-cfm HP-style carburetor. The 302 uses smaller 7/16" head bolts and your "P" heads may or may not require the step washers. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. Performance & security by Cloudflare. 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. JavaScript is disabled. There are too many variables to add to this regarding aftermarket stroker kits or components. If I get different urges later, Ill pursue those then. Rowe studied engineering, philosophy and American literature at Central Florida Community College. 351W with GT40P heads? | Mercury Cougar Owners These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. Assorted screwdrivers, pliers and vise-grips. 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. When I purchased my "brand new" set of GT40P's, I bought them from an Mustang specific machine shop that used to exist called Central Coast Mustang. 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. Good Luck. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. 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. All manufactured using advanced CNC technology for the extreme durability and precision required of the modern canted valve Ford Small Block at power levels around the 1000 mark reached during recent competitions at the EMC and at the strip. Best of all, no machining is required to install these on your stock cast iron heads! These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. The heads that were used were also old C8 casting with 58cc chambers. I am sure you have increased the bore size and possibly even the stroke a bit and spin it up pretty high in the RPM range.