RAR Pontiac Underdriven 2 Groove ATI 3 Bolt Crankshaft Pulley 1971-81- Polished RAR-PUC4AC

3-bolt billet underdriven crank pulley for aftermarket balancer (ATI,TCI, etc.). Double groove. Groove centers: .9" and 1.65" from balancer face (same as 71-81 oem crank pulley groove offsets). ATI Balancers- *Pulley Mounting Surface is .200" further OUT than stock*(Uses Pulley #RAR-PUC-4AC for v-belt but will have to re-space brackets and accessories to account for the .200" difference in damper face)