This depends on many factors.
Do you need an offset muffler?
Do you want a stainless steel or aluminized muffler?
Sound of the mufflers?
ENGINE SIZE | HORSEPOWER | MUFFLER INLET/OUTLET" | |
Single Exhaust | Dual Exhaust | ||
150-200 CID | 100 to 150 | 2" to 2-1/4" | 2" |
200-250 CID | 100 to 200 | 2-1/4" to 2-1/2" | 2" to 2-1/4" |
250-300 CID | 150 to 250 | 2-1/2" to 3" | 2" to 2-1/2" |
300-350 CID | 200 to 350 | 2-1/2" to 3" | 2-1/4" to 2-1/2" |
350-400 CID | 250 to 550 | 3" to 4" | 2-1/2" to 3" |
Use as a general guide for engine size and performance |