Professional Products PowerForce Harmonic Balancer - 8.000 in OD - Black - Internal Balance - Big Block Chevy 4399 This is the strongest configuration

This is the strongest configuration available

1-1/4 in to 2-1/8 in Adjustable

All QA1'springs come with a lifetime guarantee to remain within 2% of their original free height and rate

1970-1972 Chevrolet Bel Air Base CID 454 Naturally Aspirated GAS

Includes mounting instructions

Professional Products PowerForce Harmonic Balancer - 8.000 in OD - Black - Internal Balance - Big Block Chevy 4399 This is the strongest configurationProduct Description: Harmonic Balancer PowerForce 8. 000 in OD Steel Black Internal Balance Big Block Chevy Sold Individually The year was 1972, as newly imported automotive brands from Europe and Japan were gaining popularity; the founders of Professional Products entered the racing industry as part of Brock Racing Enterprises. The performance and styling parts company was an off shoot of the Datsun (Nissan) Racing Team. Prior to this, Brock and