These gears fit 273, 318, 340 & 360 with a 484 in. R oller cams are made from steel cores rather than cast iron for hydraulic flat tappet cams. The traditional fix for this was to run a sacrificial bronze gear which failed in short order.
Fits Mopar 273 318 340 360 Camshaft Retainer Plate
ARP 144-3602 Small Block MOPAR 273 318 340 360 PERFORMANCE Head Bolt Kit 6pt.
Mopar 273 / 318 / 340 / 360 Billet Distributor With Vacuum Advance / Black Cap /
ARP 144-3601 Head Bolt Kit Mopar Chrysler Small Block LA 273 318 340 360 W2 W-2
ARP 144-3602 Head Bolt Kit Hex Mopar Chrysler Small Block LA 273 318 340 360
Proform Electronic Ignition Distributor Kit Fits Mopar Chrysler 273 318 340 360