Comp Cams Big Mutha' Thumpr 4/7 Swap 243/257 Hydraulic Roller Cam For Chevrolet 348-409 - 4702-1
Street/strip, needs 9.5:1 compression, 2800+ stall. Intake, gears, and headers. Very rough idle.
BMT 243/257 HRlrChev
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