10 Rib C7 Corvette - LT1/LT4 Crank Pulley (+15% or +22%)

The THP Engineering C7 Corvette lower pulley is designed to work with the ATI Super Damper harmonic balancer and is the perfect companion for our LT1/LT4 10 rib Supercharger Belt Drive System! 

These +15% (9.24") or +22% (9.80") overdrive crank pulley features 10 ribs (additional 2 ribs forward) with a Hard Anodized surface for long lasting performance.

Note: Will not mount to stock crankshaft pulley, requires ATI damper #917315 for fitment.