302 with gt40p heads horsepower

The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. 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. E303 Cam advanced 4 degrees. 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 make sure it is a roller cam. I have heard this rod bolt weakness myth for years but have yet to have a single problem with them in any of the SBF engines I have pounded on for the last 30 years and there have been lots of them. Dec 8, 2011. The car weighs #2835 with driver. $139.99. What did the heads flow? 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. GT40P heads, 302 and Victor Jr. intake: - Factory Five Racing Forum All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. When combined with modern power-makers, such as nitrous, the 302 is more than capable of producing 400+ horsepower for little more than the cost of a stock engine rebuild. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. I am working on a set of iron GT40s hoping it goes faster. That's an improvement of 22 hp over Test 2. 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. people can stop saying that adding aftermarket cam with stock heads is a waste of time. Location: Re: Stock Ford 351W 4bbl dyno numbers. A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. Common sense would suggest that with the heavy lifting complete and the old cam removed, by not installing the new roller lifters along with the camshaft could be asking for the possibility of trouble just a few thousand miles down the road. http://vb.foureyedpride.com/showthread.php?t=89153, http://www.facebook.com/groups/233213650060739/, 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 The hardest part of swapping the cam was just getting the timing cover off and back on again. Not looking for crazy HP. I spin it to 6500 and thats about it. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. How to Build a Cheap Drag Racing 302 Ford Motor | It Still Runs Every thing he tells you on this site is true. Or, you could invest in a new set of heads that would also do the same job but you can expect to spend quite a bit more money. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. 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. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . We know what you're thinking--only two-tenths from an extra 45 hp? Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. Add 40 to 70 HP to your 302 yourself - Factory Five Racing Forum GT40 Heads On A 289? | Ford Muscle Cars Tech Forum JavaScript is disabled. He'd be the best source. 1 - 7 of 7 Posts. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. Good Luck. Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. Tim's junkyard refugee survived the beating and we had a bitchin' story. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. This test went so well that we were eager to see what the slightly bigger cam would do. We've already been motivated to put this engine in a buddy's Mustang. fordfan289, Aug 27, 2011 HAD '82 GT monochromatic (red).black cloth HAVE 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. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. this is the price for one head. A COMP hydraulic roller cam we found works well with this combination. These engines came with the GT40P head, which even with its small valves, offers really good performance. Yeah, except those. a) ain't early and b) aren't 289 heads. 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. Buy the lifters for peace of mind now and hopefully for the duration. (Please note these are not GT40P Explorer heads). This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons. This engine will be good for your 65 Mustang. This is not a criticism but instead consider it to be more of a heads-up. What Cam and Springs to Use for GT40 Heads 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. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. Rowe studied engineering, philosophy and American literature at Central Florida Community College. 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. Anythoughts? Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! If I get different urges later, Ill pursue those then. Thanks. Just put some 1.7 pedistal rocker arm on along with a mild camshaft (make sure to use the correct valve springs), you will make over 300 flywheel hp. Seriously though if you're not planning on an all-out attack for HP, I'd consider a forged piston out of Probe's SRS line-up. The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. #3::: Do your homework,get quality parts,dont skimp. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. 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. These are a great head but do need some machining mods to make they really work well. the engine is carburated of that makes a difference. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. Because of this, your tuneup will probably need to be modified. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. Install a set of 1.7:1 roller-tipped rocker arms on the heads. The GT40 heads are a bit more versatile, working with the 5.4 and 6.8, while the GT40P (Explorer/Mountaineer) heads will only work on the 6.8 due to an interference issue. Weiand 7515 xcellerator intake. That said there are some better aftermarket options for heads also. 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. hole size 302 is 7/16 and 351 is 1/2 Joined: Sun Mar 15, 2009 9:31 am. Joined . Keep in mind that swapping camshafts is a fairly extensive effort. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. T5 with 3.73s. I got a GT40P off the assembly line years ago. GT40P heads, what kind of performance do they give? - FourEyedPride.com The results were a major increase in power throughout the entire rev range, with an increase of 60hp at 4500rpm through to a peak of 279hp at 5800rpm. . Fastest e303 5.0l's? - FourEyedPride.com I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. 289 or 351 heads on a 302 advantage? | The H.A.M.B. A mild porting with gasket matching will be very good. The spark plug issue is almost a non-issue. GT40s have 64cc chambers. They almost seem like flywheel numbers rather than RWHP numbers. You need to check. Now we know why Dennis Hilliard of Central Coast Mustang is so high on these heads. GT40 vs GT40P: Who has Smaller Chamber Volume ! More compression FORD GT40p 4 BAR HEADS IN GOOD CONDITION w/ONE BOLT BROKEN GT40Ps have 58cc. Took me 7 hours to do one head.but they cleaned up real nice. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. However, stepping up in the performance head market will set you back more than $1,200 for a decent pair of aluminum castings--and that's straight out of the box, with no porting. I had those on my car before I upgraded and they were nice heads. When building an engine there is a lot to take into consideration. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. So I've got the motor and heads already for my maverick project. Its increase while significant is still only about that of a decent 351 w, hi im building a nastalgic car so im not going to drag race it but it must go ok ive got a 302 windsor basicly recoed stock but i want to run tunnel rams to go with the the3am would like to put choppy cam and replace the heads any ideas would be much apprecited thankyou, What is the stock head cc of a 1992 f150 302 windsor. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. Well also assume that this engine is running stock exhaust manifolds. The reason for this is that we're actually replacing mildly worked E7TE heads. Depends on the budget. He'll have to get a gear for his distributor. For 2018, the Coyote makes 460 hp. With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. 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. One benefit gt40P head will have over other 80's-90's model heads, including the gt40 head, is that it has a smaller combustion chamber much like the original 289 heads. Related Resources Mustang Generation Nicknames: What Do They Mean? Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. how much HP and torque? ***Most important is theStupid question is the one that was never asked!*** I wouldnt recommend reusing lifters though. 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. I turned it because it was tired when I got it. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. However I think the opportunity window is slowly closing. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR Skip to main content. The only one that's close, is #7. I added a link to it. The 2 heads are about the same when looking at the numbers with the GT40p heads having a slight edge. The MPH was there to run a little better but the local track is about terrible. 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. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. For a better experience, please enable JavaScript in your browser before proceeding. You can use the stock roller lifters with any size cam you want. I was looking at putting on the GT40P heads on. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. This needs to be removed and different exhaust valves, retainers, and valve springs added to turn this into a decent street head. Obviously, tuneups will vary. You can have your current 28 oz rebalanced to 50. Finding Gt40p heads at the junkyard is getting more and more complicated and if you want to upgrade the heads you have to take into account the costs of the machine shop and compare everything to a set of cheap aluminum heads. '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 It turned out we were conservative on both counts. 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. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. The Fora platform includes forum software by XenForo. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. The action you just performed triggered the security solution. The heads that were used were also old C8 casting with 58cc chambers. 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. This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. I'll save the effort and lighten my front end by 50# with aluminum. never messed with the timing, its at 35* total . Have fun, be safe, enjoy. As with all head installations, check piston-to-valve clearance before final startup. GT-40P Heads - 5.0 Mustang & Super Fords Magazine - MotorTrend Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. 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. Motor is going into a Ranger. 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. This is the main reason why these engines are not modified as much as the small block Chevy. The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. AFR 165cc 58cc Heads. We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. 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. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. A trip to Orlando Speed World provided us with updated quarter-mile times. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. Your IP: For a better experience, please enable JavaScript in your browser before proceeding. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at 0.50 . We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It runs smooth but seems lazy. No-option stripper- I like strippers. Calculating pushrod length Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. 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. . .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . Assemble the rotating assembly with a stock 5.0L crankshaft, a set of 5.0L rods and the specified pistons with stock-type rings. Free shipping for many products! Step 1. Yep my **** is coming apart again Isnt life great! 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? A forum community dedicated to Ford Mustang owners and enthusiasts. I got lucky and found a complete Explorer GT40P engine online. check out the. Over $2050 for the 165/185 renegades. I need that part number too! I have a very good running stock 1981 302 in a F100 short box. 68 XR7 & 68 M-100. Required fields are marked *. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. A forum community dedicated to Ford Mustang owners and enthusiasts. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. Cant wait to try um out. 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. Sponsored. are you twisted331 also? I got rid of the carburetor and went with a F.A.S.T. I guess I had it backwards, sorry about that, didn't mean to spread misinformation. This is a common mistake with first-time cam buyers who dont necessarily appreciate that the cam is just one component of the overall engine package. Dyno results GT40P heads | Vintage Mustang Forums If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. A bit of info for those looking to build 300+hp 5.0L/302s I would like to know what heads, cam and intake manifold combination to use for the most HP I can squeeze out of that motor. I'd much rather be able to drive it at 8 or 9/10s of what it can handle. A forum community dedicated to Ford performance owners and enthusiasts. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New $169.50. With no other changes we gained 25 hp using factory iron heads. Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend Well offer one as an example. Ask Away! with Jeff Smith: Camshaft and Cylinder Head Recommendations 351W with GT40P heads? | Mercury Cougar Owners Do you guys have part numbers for the spring kits? Ford Factory 5.0 Performance Cylinder Heads. This kind of improvement may not seem like much, but the owner of our test car, Jamie Holten, runs in FFW Trophy Stock where three-tenths is a lifetime. I'm an old school guy (289 in 65 mustang), and I'm just looking into the new 5.0 engine (roller cam) stuff recently. I am very happy too. made more power everytwhere and 40 hp is respectable. Posted on May 07, 2014 by promarengine. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Not to mention, they will run circles around GT40P's out of the box. With the engine reassembled, we boxed up our second camshaft and headed for Westech's dyno. Stock valve sizes? The GT40P heads flow a lot better than stock 351 heads. Like I said lots of options. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. this head is complete with new 1.837 int valves and 1.536 exhaust valves. If you're running a stock cam, 1.7 rockers will work perfectly. However, when we dyno'd the car before installing the GT-40P heads, the fan was on the car. GT40P Heads how much hp from them. - StangNet You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. $700.98. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. GT40, GT40P, would be great factory heads. Pride is built, in your garage, with your two hands. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. We've seen what happens from previous Ford experience when power levels above 500 hp tend to either pop head gaskets or saw blocks in half. Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. Your email address will not be published. Once the headers are in place, then you can consider if you still want more power. We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. Theres many options available for a little more power. 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. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. Its always refreshing to see a FORD getting a little face time in your column, even if its a tired 302 with no great expectations of setting the world on fire when the dust settles. 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. For this reason, we're not sure what kind of boost the GT-40P heads will give. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. THANKS VERY MUCH! HiPo manifolds and Ill be good. Ive been building ENGINES for 40+ years. This pushed that little Ford to a peak horsepower of 503, and that was where we stopped. Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. SB Ford, GT40 .575" Lift Max Output II Drop in Valve Spring Kit, Hyd Roller, 140 Lb Seat. If we subtract the 20 hp that the fan is worth, we end up with a gain of 25 hp. The reply has so many assumptions that I cant even assume to know the answer. I don't need tons of power to enjoy the car. PTP Engineering front suspension and 25540R17s all around. timing and compression ratio with gt40p heads - Modded Mustang Forums You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. Calculated compression to 9.8:1. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. Upgrading Fox Body Cylinder Heads - AmericanMuscle.com Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc The valve seats have been cut on a . United Engine and Machine sells cheap but decent pistons that will do what you're wanting.

The Last Shift Filming Locations, Signs Hestia Is Reaching Out To You, How To Get Superhuman V2 In Blox Fruits, Articles OTHER