High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle. K12-601-4 contains the following: 12-601-4 Mutha’ Thumpr 235/249 Hydraulic Flat Cam for Chevrolet Small Block, 812-16 High Energy Hydraulic Flat Lifter Set for Chevrolet Small and…
HYDRAULIC – Mutha’ Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle. Product Features HYDRAULIC – Mutha’ Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle. 287/305 Advertised…
HYDRAULIC – Big Mutha’ Thumpr: Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Product Features HYDRAULIC – Big Mutha’ Thumpr: Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. 295/313 Advertised…