Does running headers with 1 7/8" primaries going into a 2 1/2" exhaust sound like it would adversly affect performance?
I know I shouldn't have primaries that big on a low rpm 402, but it's a long story as to why I ended up with them. I went with a 2 1/2" exhaust because I figured 3" was too much for the engine use.
Does this combo sound stupid or should I leave it alone?