.490"/.491" Shaft Size
BRONZE BUILT, READY TO SPIN.
This .490/.491” bronze distributor gear is designed for standard left-hand rotation Chevy I-4 and I-6 engines. Built tough for roller cam compatibility, it’s the go-to upgrade for long-term durability and precision spark control—especially when running a billet or steel cam core.
✅ Fits Chevy I-4 & I-6 engines
✅ For use with billet or cast steel cams
✅ Standard LH rotation
✅ .490"/.491" shaft size
✅ Durable bronze construction for reduced wear
Warning: May result in improved timing and smug mechanical confidence.