How much horsepower will GT40 heads add?
How much horsepower will GT40 heads add?
You just want to keep it out of detonation. 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.
Are GT40 heads better than GT40P?
GT40 vs GT40P, which are better? Really, when you get down to it, neither head is any measurable difference better than the other. The GT40P does have a slight edge over the GT40 cylinder head because of its smaller chamber volume. The smaller combustion chamber can net a bit more compression, but only marginally.
What are GT40 heads?
What Are GT40 Heads? The Ford GT40 heads are a factory small block ford head found on certain vehicles, most notably, the Ford Mustang. They were most famous for their debut on the 1993 Cobra and were also found on the 1993-95 Ford SVT Lightning truck.
What size valves do GT40 heads have?
The GT40 valve sizes are 1.85/1.54 for the intake and exhaust, while the GT40P went to a smaller 1.46-inch exhaust valve. There were other changes to the GT40P, including a slightly smaller combustion chamber reduced from 65 cc to roughly 60, which benefits the compression ratio.
How much horsepower can a Ford 302 make?
Standard Ford 289 and 302 small-blocks were factory-rated between 200 and 230 hp. The vaunted 289 High-Performance engine was said to make 271 hp. Today, if a 302 Ford makes 360 hp on pump gas with a hydraulic cam, most experts consider it to be a pretty good motor-at least until Joe Sherman steps up to the plate.
Are GT40 heads iron?
Additionally, either the E7 or the GT40 cylinder heads are going to be made of cast iron.
What did E7 heads come on?
E7TE cylinder heads came equipped on all 5.0L Foxbody Mustangs between the years of 1987-1993. They featured a 1.782″ intake valve and a 1.46″ exhaust valve, with a combustion chamber size ranging between 60.6-63.6 cc.
What is the lift on a b303 Cam?
0.480 in. Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.480 in.
How do I know if I have a gt40p head?
Look on the sides of the cylinder heads. The sides of the cylinder head face towards the exhaust manifold on one side, and the intake manifold on the other. In various locations, “GT40” is cast in raised characters on each side of the cylinder head.
