Professional Products PowerForce Lightweight Harmonic Balancer - 6.000 in OD - Black - Internal Balance - Small Block Chevy 53955HST Cylinder head flow 291 cfm

Cylinder head flow 291 cfm on the intake and 217 cfm on the exhaust at

GM Powerglide/200C/375B/475 20 Tooth Speedo Drive Gear

188 wall DOM tubing

Intake manifold will not fit 1962-64 Max Wedge heads

1980-1981 Ford E-350 Econoline Club Wagon

Professional Products PowerForce Lightweight Harmonic Balancer - 6.000 in OD - Black - Internal Balance - Small Block Chevy 53955HST Cylinder head flow 291 cfmProduct Description: Harmonic Balancer PowerForce Lightweight 6. 000 in OD Steel Black Internal Balance Small 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,