and Performance Parts and Accessories
38691 - 400ci SB Chevrolet SFI Approved 6-3/4" X 1-3/8" Internal / External Balance Harmonic Balancer
An SFI-specification harmonic balancer is a must for high RPM engines and is required on most tracks. This 6-3/4" x 1-3/8" balancer for 400 ci small block applications have been tested for two hours at 12,000 RPM to meet or exceed all SFI specification s.
All balancers feature laser etched degree marks for timing adjustments.
Note: Includes removable weights and works with internally or externally balanced engines.