Brian Tooley, the founder ... Camaro program by American Racing Headers, and they feature 1.875-inch primary tubes and 3-inch collectors. The BTR in-house engine dyno is equipped with both ...

Given that Brian Tooley Racing (aka The Spring King ... 150, meaning, it was more than adequate for performance use. Engine builders recommend having .100 in-Hg P-V to ensure there is no contact ...