So, given a moderately hot 250 (with offy intake, Edelbrock 4bbl, Comp 260 cam, flat top pistons, Lump port head, bigger valves, and the head work that goes with that, Clifford tube headers, and dual exhaust, what size exhaust should I be using behind the headers?
I've currently got 2.5" with 2.5" mufflers. It's a little on the loud side but I don't have any tailpipes on it yet. It jsut stops at the mufflers. The problem is that when I built the frame, I did not realize that few mufflers are straight inlet and outlet. The mufflers I got are Center in, offset out and will have to go ultimately because I don't want to redo my cross member.
I've been thinking about glass packs but now I'm thinking my 2.5" pipes are too large. This is a street driven roadster with a moderately hot engine and I'm not into droneing exhaust or fart cans.
I can easily step the collector output down to 2" or even 1 3/4 if that is what is needed for quieter sound and low end torque. This motor will rarely see 5000 rpm and probably not even 4000 unless I'm showing off.
I also did not plan on my muffler being 4 1/2" thick and now it hangs below the frame. That's one reason I was thinking of a 3" OD glasspack. I've even been thinking of building a custom muffler but would rather not.
Your thoughts and ideas would be appreciated.
