header runners size vs horsepower handling and restriction - Third Generation F-Body Message Boards

goes12s · 10-18-2009, 12:39 PM

Hey i have a set of summit racing 1 1/2 shorty style headers with a 2.5 y pipe on my car now but i am starting piecing together my own turbo kit and i will go with a single mp t-70 .96 turbo. My question is if i modify my headers kind of like BBSDesign with the 1 1/2 runners would that be too restrictive for 450-500whp?? This is not a large cubic inch motor its just a 350 with aluminum heads

ZZ3Astro · 10-18-2009, 10:13 PM

Not at all... I think you'll be surprised how much power a setup like that would support. I'm expecting 500 crank hp from my log setup using a stock manifold on the driver side.

Sounds like a great project.. please keep us posted on your project!

goes12s · 10-19-2009, 07:35 PM

oh sweet! thats good to know. Yeah i have done my research on everything but i'm just triple making sure it will all work. In a couple weeks i will start building away. i just have to get a couple other things done first on some other cars.