Need input on sizing the exhaust on my 34 Dodge.
It has an early 392 hemi, stainless steel valves, headers, 2 x 4 barrel Weiand intake with 600cfm Edelbrock carbs, 10.5 to 1 pistons overrsized 0.040, semi wild cam.
I was about to run a dual exhaust at 2 1/2 inch but a few locals told me I...