Could spend hours back in the old days porting out the intake manifold and heads with a hand grinder. But this sure made a difference in performance and fuel economy.
But these are all plastic injected intake manifolds are as smooth as glass on the inside. And investment casting is used on aluminum heads.
If you really have a bug for modifying, get yourself a 1957 Chevy 283. Even was legal back then and could easily pick up a hundred HP bored out to a 302.
Only thing left for the Cruze is either the air intake or exhaust, anything beyond this, EPA would be jumping all over, and if lucky may gain a half a HP. But will get more noise.
Why not buy a 200 mph plus Caddy?
But these are all plastic injected intake manifolds are as smooth as glass on the inside. And investment casting is used on aluminum heads.
If you really have a bug for modifying, get yourself a 1957 Chevy 283. Even was legal back then and could easily pick up a hundred HP bored out to a 302.
Only thing left for the Cruze is either the air intake or exhaust, anything beyond this, EPA would be jumping all over, and if lucky may gain a half a HP. But will get more noise.
Why not buy a 200 mph plus Caddy?
