A good port job can set you back another $500-$1,000. 68 Mustang GT/CS Highland Green, PS, PB & Console, C Code w/C4 & 3.55 8 rear, If you aren't using the GT40P's stock, with maybe a spring upgrade and valve job, they aren't worth it anymore. For this reason, we're not sure what kind of boost the GT-40P heads will give. We will go into more detail on the head mods in a later story in Junkyard Builder, so watch for it. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Not to mention, they will run circles around GT40P's out of the box. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. Budget 300HP 302 Build For the most part 302 heads and 351W heads are the same. Ford Factory 5.0 Performance Cylinder Heads. It runs smooth but seems lazy. I have a 432 HP non Hi Po 289 I built. I just read about this build on the corral.net. When building an engine there is a lot to take into consideration. . You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. You can have your current 28 oz rebalanced to 50. 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. Instructions on porting the GT-40p heads here. I was looking at putting on the GT40P heads on. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. Like I said lots of options. With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. This one added another 10 degrees of duration over the smaller Voodoo cam, along with 0.020 inch more intake valve lift. Building 400hp Into A 5.0L Small-Block Engine - MotorTrend Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. The GT40P heads flow a lot better than stock 351 heads. How to Get More Horsepower Out of a Ford 289 | It Still Runs Weiand 7515 xcellerator intake. Consider having the head's intake ports matched to the intake manifold gasket. (A starter is a motor, windshield wipers use a motor,electric windows use motors) Any one uses that terminology in my shop will be corrected once, only once. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . 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. But don't think that adding a bigger camshaft will make more power. If you have a early 351W ie pre 76 it probably . Your IP: These heads have been remanufactured using refaced reclaimed Factory Valves. The question was whether we wanted a torquey small-block or a more cammed-up rpm engine to boost peak horsepower. 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. 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. 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. You didnt mention the car this engine is in, but lets assume there is enough room to remove the radiator and any other coolers and perhaps some or all of the front grille and/or brackets before the cam has sufficient room to exit the front of the engine. Limited header choice is certainly a challenge. 1996-2001 Ford Explorer 5.0L V8 Specifications 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. gt40p heads on a 289 in a 66 | Vintage Mustang Forums #1:::Throw out all your Magazines that suggest what to do! Stock 1989 5.0L HO pistons will work if you can find them. JavaScript is disabled. I'll prob take a trip up there this weekend after scavenging the junkyards, thanks a million. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. Required fields are marked *. Keep in mind that swapping camshafts is a fairly extensive effort. These timeslips are from 1280' above sea level. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. Have fun, be safe, enjoy. Thank You. I love my setup and it is very strong engine. We need a build on a 400+ hp 302/6 build. There are caveats to this plan, however. Purchase a set of flat top pistons (from Ford Motorsport, TRW or Keith Black) with machined valve reliefs and designed to provide 10:1 compression with a 59 to 60 cc combustion chamber cylinder head. On the power side, we selected 400 hp as an impressive but reasonable output for our small-block 5.0L Ford. Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. made more power everytwhere and 40 hp is respectable. Calculated compression to 9.8:1. Yea. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. 68 XR7 & 68 M-100. These are a great head but do need some machining mods to make they really work well. Free shipping for many products! Mar 23, 2004. Build Thread 1965 Fastback Project "Racesteed". These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. 1983 Mustang G.T. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. 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. We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. I don't need tons of power to enjoy the car. 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? As with all head installations, check piston-to-valve clearance before final startup. 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. A forum community dedicated to Ford Mustang owners and enthusiasts. Its NA but makes use of AFR heads and some other aftermarket goodies. Because its all been done time after time after. Performance & security by Cloudflare. You'll have to plug the oil hole that is in the engine from the old oil dipstick. These cast piston short-blocks are not quite as good as the forged piston 5.0L that came in Fox-body Mustangs, but the GT40P heads flow much better than earlier 5.0L heads. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. 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. 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. The "P" heads flow better. will gt40p heads fit on a 302 | Ford Mustang Forum For a better experience, please enable JavaScript in your browser before proceeding. I got lucky and found a complete Explorer GT40P engine online. 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. I got lucky and found a complete Explorer GT40P engine online. Where they differ is the combustion chamber size. I got a GT40P off the assembly line years ago. What you are trying to do is to increase the amount of airflow through the engine in order to make more power. Not bad for off the shelf parts and a stock shortblock. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. Nudge us with emails, and we'll make it happen. 302 GT40 Dyno Results - FourEyedPride.com If you dont feel comfortable doing this higher a pro. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. Test 1: 750-cfm carburetor, dual-plane intake manifold, and stock camshaft. Ford Explorer Mountaineer 5.0 Ohv Iron 302 Sbf Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. Ive been building ENGINES for 40+ years. 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. GT40P Heads how much hp from them. - StangNet FORD GT40p 4 BAR HEADS IN GOOD CONDITION . 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. For all of us interested in Gt40p heads. I spin it to 6500 and thats about it. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. 1983 Mustang G.T. Test 3: Installed the larger Lunati camagain, no other changes. this head is complete with new 1.837 int valves and 1.536 exhaust valves. 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. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. With no other changes we gained 25 hp using factory iron heads. At the time, I was still running smog equipment in a 1994 Mustang GT, so I had them drill the back of the heads for the thermactor connection. How to Build a Budget 383 Stroker Chevy How do I Increase Horsepower on a 440 Cylinder Head Specifications for a 1969 How to Get More Power Out of a 92 4.3 dragster engine image by Robert Young from, Copyright 2023 Leaf Group Ltd. / Leaf Group Media. So . However there are plenty of factory heads that with the help of an experienced machine shop can be great. The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. . Compare. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. I've not seen a set of longtubes that have an issue with GT40P's, either. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. No-option stripper- I like strippers. 1979 Indy 500 Pace Car. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! 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. 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. JavaScript is disabled. 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. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. 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. 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. 289 or 351 heads on a 302 advantage? | The H.A.M.B. If they are cheap enough, take them anyway. - I have a 1989 f150 with a 302 5 spd. 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. 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. Here is my setup. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. Free shipping. Install a set of 1.7:1 roller-tipped rocker arms on the heads. Pride is built, in your garage, with your two hands. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Here a comparison of different heads on a 302: I'm very happy with my GT40P. 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. I have a 5.0 from a 1992 Mustang in my 65. You'll also have to use your 289 timing chain cover since it has a hole for the oil dip stick and fuel pump.
Cal State Fullerton Basketball Recruiting, Upper Chesapeake Occupational Health, Hartford Snowfall Totals By Year, Liz Goulding Last Of The Summer Wine, Articles OTHER