Proform Harmonic Balancer Cover - 8 in. Exhaust Valve Width May be Trimmed for

Width May be Trimmed for Custom Fit

1977-1981 Pontiac Firebird

AN-08 size with a 40 micron stainless steel element and black anodize finish

ensuring improved shifts

3000-9900 RPM

Proform Harmonic Balancer Cover - 8 in. Exhaust Valve Width May be Trimmed forProform Harmonic Balancer Cover 66518CC 8 in. Chrome Clamshell Package Patented Cover Offers Improved Readability More Stable Top Dead Center Indication Better Timing Accuracy Applications include: Bel Air, Biscayne, Blazer, Blazer K5, Brookwood, C10 Pickup, C10 Suburban, C15 Pickup, C15 Suburban, C15 C1500 Pickup, C15 C1500 Suburban, C1500 Pickup, C1500 Suburban, C20 Pickup, C20 Suburban, C25 Pickup, C25 Suburban, C25 C2500 Pickup, C25 C2500