would a 2.5 hot side vs a 3inch hot side make a big difference?
i ordered my hot-side to be a 2.5 so i can have a direct bolt on with my old kit. Now i feel that its not making nearly as much power as i thought. Im thinking of going to tubular headers and maybe a 3inch v band hot side with a new v band down pipe to bolt up. currently im running cast sbr headers witch look like it might also be the problem. Im wanting to do this asap because right now i made just as much power with my old 3563 then my 86 witch is dumb. I have tried searching and nothing. thanks

 

depends on the a/r of the hotsides but i really suggest the 3in hotside.

 

ok im sure that is the issue as long as the manifold thanks.