ACT Clutch Kits & Flywheels

ACT HD/Perf Street Sprung Clutch Kit | 1971-1974 Pontiac Firebird

  • Sale
  • Regular price $561.00

Snap Logo Lease for as low as $/week Learn More

This product is available.

1971-1974 Pontiac Firebird HD/Perf Street Sprung Clutch Kit by ACT

GM8-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance.

ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's Performance Street discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, with increased strength and reliability.


  • Product Weight (lbs.): 21.6
  • Torque Capacity (ft/lbs.): 629
  • Torque Capacity Over OE: 32%
  • Disc Material: Organice
  • Clutch Disc Diameter (Inches): 10.5
  • Clutch Disc Diameter (Millimeters): 266
  • Input Shaft Diameter (inches): 1.125
  • Pressure Plate Type: Heavy Duty


  • Light to moderate pedal effort
  • Smooth positive engagement
  • OE to mild gear rattle
  • Longer friction life
  • Heat tolerance and reduced fade
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability


  • 1971-1974 Pontiac Firebird

What's In The Box?

  • 1 - ACT HD/Perf Street Sprung Clutch Kit


  • ACT 1-Year Limited Warranty