The Powerforce line of balancers are intended for non-SFI high performance applications. Although primarily meant for street use, these balancers are also suitable for racing applications where there is no requirement to meet SFI specifications.
It is not recommended to use these balancers in excess of 6,500RPM. Also, they are not recommended for marine or circle track applications due to excessive heat generated. While high temp elastomer is used in every balancer, certain applications are not suitable.
These dampers will not fit 1996-'97 LT4 Corvette and Camaro or 1992-'96 LT1 Corvette. These dampers do fit 1993-'97 LT1 Chevy Camaro, Pontiac Firebird, 1994-'95 Chevy Caprice, Impala, and Buick Roadmaster. To identify an LT4 from an LT1, the LT4 VIN number has the eighth digit as a "5" and the LT1 has it as a "P." Both of these dampers include a high strength steel hub, spacers for various engine applications and high quality damper to hub attachment bolts in two different lengths. It is highly recommended to use a new factory crankshaft bolt, GM #12557840. Both dampers have a keyway and a supplied key plus 60° of timing marks. The stock damper does not use a key, but the crank has a keyway in it. For high performance applications, use of the key is recommended.
