Factory experimental

Greg Hill · 01-22-2009, 09:36 AM

Comparing the Cobra jet motor to the 510hp 281cu.in. motor goes like this. The 510 hp. motor has a.060 larger lift cam. Compression is about the same,the cobra jet has 49 more cubic inches, they both have 62mm twin bore sizes, both are intercooled and the cobra jet has larger valves and is a 4 valve head compared to a 3 valve head in the 510hp motor. Am I missing something here? With 49 more cubic inches and a lot more valve area it looks to me like the cobra jet motor should make substantially more power than the 510 hp motor. The supercharged motor should like the extra valve area.

Greg

01-22-2009, 09:36 AM	#11
Greg Hill VIP Member Join Date: May 2006 Location: Louisville , KY Posts: 1,995 Likes: 68 Liked 279 Times in 68 Posts	Re: Factory experimental Comparing the Cobra jet motor to the 510hp 281cu.in. motor goes like this. The 510 hp. motor has a.060 larger lift cam. Compression is about the same,the cobra jet has 49 more cubic inches, they both have 62mm twin bore sizes, both are intercooled and the cobra jet has larger valves and is a 4 valve head compared to a 3 valve head in the 510hp motor. Am I missing something here? With 49 more cubic inches and a lot more valve area it looks to me like the cobra jet motor should make substantially more power than the 510 hp motor. The supercharged motor should like the extra valve area. Greg __________________ Greg Hill 4171 STK