[hvacrefrigoligist]

what is your guetament hp gain if you port mach a intake to a set of heads. 289 4brrl intake and ported heads. just started and am going to keep the ports in the intake a little smaller like an 1/8 inch than the gaskets so the heads will have bigger ports.

 

[67stang]

hard to say, depends on a lot of factors...how bad the mismatch is, how much the intake flows before and after, etc. It's a good habit to get into though.

 

[tonys10sec306]

every little bit helps!!