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This Performance Race Kit features ACT's most popular Heavy Duty Pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure an exclusive four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACTs 6-pad, spring-centered race disc features a spring-center construction to properly damp torsional vibrations and resist failure under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 6-pad, spring-centered race disc engagement is harsher, but shifting is fast. The 6-pad, spring-centered disc is recommended for larger clutch sizes to absorb more heat.

Year Make Model Engine Transmission
1978-1981 Chevrolet Chevelle 6CYL 231ci 4 spd
Use: Recommended for high horespower street or race use
Feel: A low to moderate pedal feel; aggressive engagement with stock to low to moderate gear rattle
Life: Longer clutch life achieved through ACT's exclusive diaphragm design
Quality: Premium ceramic friction materials provide low wear rates and high heat tolerance. All ACT pressure plates are dynamically computer balanced for smooth operation at high RPM
Part Number: GM3-HDG6
Torque Capacity: 795 ft/lbs
Clamp Load Increase: 69%
Spline Count: 10
Spline Size: 1-1/8"
Disc Diameter: 266 mm
Disc Diameter: 10. inches
Weight: 25.5 lbs
Warranty: 90 days
Kit Contents:
Pressure Plate: GM012
Clutch Disc: 6266302
Release Bearing: RB466
Pilot Bearing PB0656A
Alignment Tool: ATGM010
UPC Code: 842385013080
Additional Information:

Model years: 1978, 1979, 1980, 1981

  • ACT-GM3-HDG6

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