If you want to run one of our Holley Dual-Sync Distributors in your Small- or Big-Block Chevrolet engine that happens to have a billet steel camshaft you have have been advised to change the hardened steel distributor gear out for a melonized gear. That's good advice.
The gear that comes with the Holley Dual-Sync Distributor is steel and suitable for camshaft materials other than billet steel. For billet steel camshafts, we offer two options. This MSD Iron distributor gear is treated with a Melonite QPQ coating that makes it suitable for billet steel flat tappet and hydraulic roller camshafts. If you have a billet steel solid roller camshaft, opt instead for the MSD 8471 Melonized Bronze Distributor Gear.
A tube of break-in lube is included in this kit and should be applied liberally to the gear before the distributor is first installed in the engine.