MSD HEI Distributor Chevy V8 Circle Track 1425013 ARP rod bolts are heat-treated

ARP rod bolts are heat-treated before grinding and thread rolling / and have a large underhead radius for greater strength

resulting in aeration and reduced performance

High Volume

227/241 Duration

MSD HEI Distributor Chevy V8 Circle Track 1425013 ARP rod bolts are heat-treatedMSD engineers have worked tirelessly to perfect the new circle track HEI. A bulletproof ignition module fires a high output coil in the cap while a specially designed, QPQ coated chromoly advance cam and weight set ride on tig welded weight plate pins and a tig welded distributor shaft. This combination provides brute strength and precision timing from idle to max RPM. At the bottom, a QPQ coated steel gear will run lap after lap, race after race,