They are tapered for extra strength in the locking area
Box mount provides a quick release method for replacing MSD or FAST ignition boxes with 7-1/2" x 3-1/2" or 4-1/8" x 6-1/2" center to center mounting dimensions
Bracket is 2-1/4"W x 6-1/2"L and may be drilled for a variety of uses
Available in blue anodized or nickel-plated finishes for the more popular sizes and configurations
COMP Cams SBC Cam K-Kit XE250H-10 Fan Spacer They are tapered for extraK KIT Complete Kit Includes: Camshaft, Lifters, Valve Springs, Retainers, Valve Locks, Valve Stem Seals, Timing Chain Set, Assembly Lube (in flat tappet applications), Decals and Instructions. Very strong torque, excellent mileage, smooth idle. Vehicle Applications: 1959 1961 Chevrolet Parkwood 1975 1978 GMC G25 1967 1987 Pontiac Grand Prix 1977 1986 Chevrolet K30 1976 1979 Chevrolet Monza 1967 1986 Chevrolet C20 Suburban 1960 1974 Chevrolet C10