Media Summary: 1985 Chevy C20 454 w/ Comp Cam Mutha Thumpr & Flowmaster Super 40's 65 chevy bel air 4 (more door) door sedan, 1972 C10 Short Bed PATINA Big Mutha Thumper CAM
Comp Cams Mutha Thumpa Comp - Detailed Analysis & Overview
1985 Chevy C20 454 w/ Comp Cam Mutha Thumpr & Flowmaster Super 40's 65 chevy bel air 4 (more door) door sedan, 1972 C10 Short Bed PATINA Big Mutha Thumper CAM 289 CID, 302 Crank & "H" beam Rods. Street Demon 625 cfm on Performer intake. Car has custom made Dynomax exhaust, longtubes, off road xpipe Today I'm comparing the sound difference between two