Professional Products PowerForce Lightweight Harmonic Balancer - 6.000 in OD - Black - Internal Balance - Small Block Chevy Tie Rod This is considered normal and

This is considered normal and is not a cosmetic defect

but with any aftermarket EFI system that can accept a 0-5 volt input for monitoring Air Fuel Ratios

GM Fullsize SUV / Truck 1973-80

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Professional Products PowerForce Lightweight Harmonic Balancer - 6.000 in OD - Black - Internal Balance - Small Block Chevy Tie Rod This is considered normal andProduct 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,