Description
Big Block Chevrolet Mark IV with Late Bowtie aluminum, Iron Dart, Pro-1, Pro Top Line & World Products iron heads 135-3703 12 Point
HIGH PERFORMANCE SERIES High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head re torquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.
⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
