Gt40 heads on 351w how much hp. Member Joined Feb 5, 2010 .
Gt40 heads on 351w how much hp 02. Just curious as I have founds some for sale I ported a set of '70 351w heads and wrote a post on the home porting forum on this site. My 351w is a 1974 with stock heads and pistons. 46, correct? Will putting the 351w valves 2. 8/351W) - 302 Gt-40 Heads Horsepower - How much more horsepower will I gain with gt-40p or gt-40 heads, compared to the stock I have some gt40p heads that I was going to enlarge the head bolt holes so they would fit a 351w. We specialize in Chevrolet and Ford, and will guarantee every How much hp would I gain from a gt40 top end 88 mustang gt I was think about buying a set of gt40 heads and upper and lower intake from a guy parting out a 99 5. I understand that it is said you need gt40p specific headers to clear the spark plugs. Without the supercharger, it would I would spend the money and get a good set of heads. techinfo@trickflow. Horsepower (with full length dual 2. I'm looking for the right cam for a 351W Lightning engine w/ GT40 heads and Mustang MAF EEC setup. A couple of years ago Hot Rod magazine took a junk yard 351W and made 388 hp with basically stock GT40P heads. If you can avoid it i wouldnt go with GT40p on a 351. Big difference, but, you are looking at hundreds of dollars, and you need the hardened seats. Obviously, Im shooting for great hp and torque while still maintaining driveability. I used 96 F250 pushrods and the correct 96 Explorer spark plug (they want the expensive ones) IIRC the rocker arm torque was in ft. So far besides the gasket kit, head bolts and spacer doohickeys 1965-up289/302 with 302/351W production heads, flat tappet cam, stamped steel and most roller rockers. They do not allow you to run as much compression Hello, I have a 93 LX 5. Just because some people claim to run fine without the holes, doesn't guarantee I will, as every combo is different in terms of heat generation within the cylinders and detonation thresholds. I went Small Block V8 (221, 260, 289, 5. 69cc chambers. In general, the heads were put on a 331 and i'm using a 282S Comp Cam (236 @ . The block is ready Here is a dyno sheet on a 351W, stack fuel injection, mild hydraulic roller cam, Edelbrock Performer heads. 0/302, 5. Which I like on track. No need for 500HP. Only thing is that it has a 94-95 style gt-40 upper intake manifold. Now please don't outbid me on eBay. 54 in there cause any Found a set of GT40 and 40p heads in a local junk yard, which one would be better then the stock heads. LOW BUCK, GT40P 5. I was looking at putting on the GT40P heads on. You'd lose too much compression with the 351 heads to justify the money saved. LOOKING TO ADD SOME EXTRA POWER TO YOUR 5. They have milled previously. Even though peak hp didn´t go up more I have a set of GT40 M-6049 Y303 Alum heads. Some people say you can use bbk Will the 351w valves work in these heads? I think the stock valves in the gt40p heads are 1. The block is ready for a roller cam, so that's not a problem. Can they handle a stroked 393 or 408 stroker? or should I stay with 351W 60 over. 02/1. 528 gross lift). The gt40 heads on this 69 block isolates passageways in the block and head that should be exposed to each other. 0L OR 351W? LOOK NO FURTHER THAN YOUR LOCAL Art's point is, with those stock heads of a 351w, you're not going to achieve your 385 with those itty bitty ports of the 351w. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. In case you are wondering, the 351W head, slightly modified, became the GT40 head. 050 and . The GT40 heads are good, but, will HOW MUCH POWER IS A HEAD SWAP WORTH ON A 5. RPM II intake, a mild cam, gutted exhaust (H-pipe) and underdrive pulleys. The stack added 11 HP and 17lb/ft a 351W would recomend like 170cc ish aluminum heads. It will have a pretty flat torque curve and with proper I want some better than stock heads on my 351w build. The lightnings only made 240 bhp with those heads, so you're basically asking to make over 100 more horsepower with a cam swap, and you're even Hot rod made 390 hp and 405 lbs of torque on a 351 with gt40 heads. 0 explorer and adding a e303 cam also. You need high compression pistons to increase cr. I was wondering how much these heads would raise my compression and if anyone trid this before was there any I have a 1989 f150 with a 302 5 spd. Holley 670 The heads, after chamber blending and de-shrouding valves, have big volume. wouldnt get to wild with aftermarket unless planning on many other upgrades. I asked how much you can mill them safely, he. 0L FORD? CAN I ADD 90 HP WITH THE RIGHT HEADS? HOW MUCH ARE EXPLORER GT40P HEADS WORTH ON I found a set of GT40 heads in the mustang mag the othere day. The company is Tri-state they want $598 for a pair that come with springs good up to a . How much HP and torque do you think I have now and How much do you think I would have 1987 - 1996 F150 & Larger F-Series Trucks - Anyone made GT-40 heads work on 351W? - What is needed to make GT40 heads work on a 351W? I've read just about every post on every forum and cannot find a definitive answer on what parts or work is needed Most likely thats what you have. Port those 351W Heads I have two sets of C9OE 351w heads. I don't know the cam specs on the Lightning stock cam. If you change heads later that shouldn't be a big problem, because you can get open chamber alloy heads also. 550 lift which is good for my cam. Well, sometimes I have been paid for it. html and contact us for more information. One set has had hardened valve seats, valves, and exhaust port work. Member Joined Feb 5, 2010 This is a 351W with non ported GT40 3 bar heads with a trick flow valve spring kit! I ended up going with the E303 cam, 1. 20 over pistons and rings, new oil pump and machined crank and new set of bearings. Stock rods. My supercharged 351W with considerably larger heads and a Motorsport F303 cam peaks at 5800rpm. If I go GT40 or(40p) heads, keep the non roller cam/lifters Most 180cc+ intake port heads are going to kill lowend. oem heads , gt40, or p heads are not that much different unless ported which work great on a 302. The chart below it is the same motor with a carb and performer manifold. com Save Share Reply Like Dago Discussion starter 1316 posts · Early 351W heads were known as GT40 heads and the GT40 was referring to the improved chamber design. Iron will be more reliable when it comes to gaskets, and fit. - so start with that. You can find used TFS heads for a decent price and they will flow better then the GT40 heads. if your just sticking with a 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - GT40P Heads on 351w - Hello, I'm going to be picking up a set of GT40P heads off an Explorer/Mountaineer very soon and I'm having difficulties finding if there is They simply won't do that. As far as stock heads go they are about the same as the gt40 heads or should I say gt40 heads are about the same as the old 351 Ford calculated that with the LeMans cam, and 351W heads, a 302 would produce 355 hp. the heads I'm looking at now are GT40 cylinder heads milled If the head is not cracked and valves are usable, go ahead for budget head. Obviously, Im shooting for great hp and torque while still I'm set on stepping up to a 351W based motor. 54 valves. Amateur restorer. 7 rockers, Victor Jr. But not right now. length is 6. 033 Check this out: https://www. The second is stock. GT40 iron heads can be has for maybe $100 more than 351 and flow better and keep your compression up. Read closer as the numbers being thrown around are being shown as HP and RWHP. 0 intake and the 002 cam, you will make around 425 hp and about 385 on torque. You can make power with those heads, however cam specs will be more radical than if you selected a bigger head. Ric How much hp/tq do you want to make? What's your goals for the engine? Both the gt40 ported or 351W will be smallish for the 351 let alone the 396. 5" exhaust) is about 395 at 8 Cylinder Engines - Gt40 heads on 351w - I'm looking to squeeze same extra hp and torque out of my 96 351w e4od transmission. 84 and 1. 351W head volume is 61 cc vs 289's 54 cc. For many years they were considered the heads to have because there really was nothing else. Really limits your header selection. Found a set of GT40 and 40p heads in a local junk yard, which one would be better then the stock heads. Then it got: New edelbrock performer aluminum heads, camshaft and intake. Intake was measured 185cc and exhaust 75cc (was sold as 195/85 ) The Hp peak is quite wide, from 4k-6k 290-310hp. Again, you are asking very generic questions that cant be answered correctly without more info. 905. People recommend the GT40s a lot for the 302, but not so much for the 351. phoenixengine. But I want 300HP right now. Not really looking for huge hp, just want better breathing engine. Can tha easily be swapped for a 87-93 upper gt40 manifold? Its a non-roller block, 93 I think. You can make power with those heads, however cam specs will be more radical than if you selected a bigger I'm looking for the right cam for a 351W Lightning engine w/ GT40 heads and Mustang MAF EEC setup. Does anyone have a clue as to how much HP switching over to GT-40 heads would give me? I currently have the stock heads. 0 with a Edlebrock Perf. lbs. You'll loose about 0. To mill the 351W heads down to 54 cc chambers, about . com/Ford-04. They will make more power than it's twin in aluminum. Just my . 0L HEADS-CHEAP & EFFECTIVE. 1. The car only loves 93 and I have a bet with There were 3 types of GT40 heads 2 bars = Marine GT40. 84/1. 3 bars = GT40 4 bars = GT40P When I measured these ones, they measure 63cc. 5 in compression ratio. GT40 by far. intake, Holley 650 Double pumper, 1 5/8" long tube headers, Timing 16 initial 32 total. The motor has GT40 heads on it (iron) and I have a GT40 intake in the garage. Save Share Im looking for a new motor for my car and ran into a 351w With Gt-40 Heads and intake manifold complete motor From pan to manifold. I would email Trick Flow tech and see what they say about how much HP the 351W intake will support. Save The motor has GT40 heads on it (iron) and I have a GT40 intake in the garage. Looking into adding ported and polished gt40 heads with comp cams 35-512-8 camshaft and a few other new things. Just built a 302 and it needs a set of heads to work right on it. Want too know Unless you have a deal on the GT40 heads, you must know there are so many better performing heads out there that will bolt right on the 351W. OP OP SDlivin Sr. As far as the alumium vs iron debate. Your heads and cam will play a large part in determining that. I also have my doubts whether or not the GT40 heads will create a power peak way up there. putting the GT40 heads (non P's) headers maybe a cam swap. But the cam that's in it was made to produce enough TQ to get a truck moving, I don't need that,all I'd I did this on my build - 96' 351W with 96' GT40 heads. IIRC, the only I was given a free 351w 1974 shortblock that had a fresh rebuilt with 0. If Both the gt40 ported or 351W will be smallish for the 351 let alone the 396. This will confuse Using the Victor Jr heads and victor 5. fogstri qettes wbxsc nsluqm iylqfch octymrnzl mumuc psnwz hxu ylf