2V or 4V

Help Support 7173Mustangs.com:


Well-known member
Mar 30, 2022
Reaction score
My Car
73 mustang baby blue with clevo 351
So I'm gonna totally botch my attempt at regurgitating something my mechanic told me about my motor build. I have a 351C, with aluminum Edelbrock performer intake manifold and heads. The heads are 2V. The piston compression is 10:1 and its bored .30 over. It has a 4 barrel Demon Carb. Went back from headers to stock exhaust manifolds. I am hoping it will do between 360-400hp, but unsure and not gonna get it dynoed. But I was told that when it came to the 2V or 4V, some people would intentionally use 2V heads with a 4bbl carb, something about the restriction adds pressure or something. Its kind of like mine has a 4 bolt main, but I'm told it strong than what I need so its kind of not important, and likewise if I had 4V heads, I'd be using a lot more gas for little end difference. I don't know something like that. Now's the time for people who know what they are talking about, unlike me to have plenty of comments I'm sure. Ultimately I keep trying to learn as much as I can so that when I talk about my car to people who ask about it, I can speak intelligently about it and what I've had done to it, etc.
Can I ask why you went back to standard exhaust manifolds and away from the headers.