Comp Cams Big Mutha Thumpr 243 257 Hydraulic Flat Cam Lifter Kit Chevrolet Small Block For Sale

Big Mutha Thumpr 243 257 Hydraulic Flat Cam Lifter Kit Chevrolet Small Block. CL-KIT – Cam and Lifter Kit Includes: Camshaft, Lifters, Assembly Lube, Decals and Instructions. Street strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1 LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305 s and 350 s from the mid 80 s forward. Camaros Firebirds Corvettes received the roller cams early, but many trucks and SUV s had flat tappet cams until the mid 90 s. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.