If you're looking to give your ride a serious boost, the ACT Heavy Duty Pressure Plate GM012 is worth a look. This isn’t just any pressure plate; it’s designed with an exclusive diaphragm that really cranks up the clamp load. We’re talking about a solid 20 to 50 percent increase here. What does that mean for you? Less deflection and a longer clutch life, which is a game changer whether you're hitting the streets or the track.
One of the standout features of this pressure plate is its four-stage heat-treating process. That might sound technical, but it ensures that the diaphragm can handle the heat—literally. You want reliability when you're pushing your car, and this plate delivers. Plus, the precision cover stampings add a level of rigidity and consistency that you can feel during engagement. You won't be wrestling with the pedal here; it offers light to moderate effort, making it a breeze to drive.
Now, if you’re the type who loves to tinker under the hood, you’ll appreciate that this pressure plate is engineered for durability. It’s not just thrown together; it’s carefully assembled and balanced for smooth high RPM performance. And yes, it’s 100% clamp load tested, so you know it’s ready to handle whatever you throw at it.
As for the specs, this bad boy has a diameter of 10.5 inches (or 266 mm, if you prefer metric). Weighing in at 17.1 lbs, it’s hefty enough to do the job without being a burden. It’s SFI certified, which is a must if you’re serious about racing.
For those curious about fitment, this pressure plate works with a whole host of classic American muscle cars—from the 1958 American Motors Ambassador to the 2002 Pontiac Firebird. It's a versatile choice that can revitalize many builds.
Want to get your hands on it? Check out the installation instructions here. Trust me, once you get this installed, you'll notice the difference right away.
Other Part Numbers:
ACT #actGM012
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| American Motors AMX | 1968-1970 | Base |
| American Motors Ambassador | 1958-1961 | Super |
| American Motors Ambassador | 1958-1962 | Custom |
| American Motors Ambassador | 1959-1962 | Deluxe |
| American Motors Ambassador | 1961 | Custom 400 |
| American Motors Ambassador | 1962 | 400 |
| American Motors Ambassador | 1963, 1965-1966 | 880 |
| American Motors Ambassador | 1963-1966 | 990 |
| American Motors Ambassador | 1963 | 800 |
| American Motors Ambassador | 1966 | DPL |
| American Motors Classic | 1965-1966 | 550 |
| American Motors Classic | 1965 | 660 |
| American Motors Classic | 1965-1966 | 770 |
| American Motors Hornet | 1970-1972 | SST |
| American Motors Hornet | 1970-1971, 1973-1977 | Base |
| American Motors Hornet | 1971-1977 | Sportabout |
| American Motors Hornet | 1971 | SC/360 |
| American Motors Hornet | 1977 | AMX |
| American Motors Javelin | 1969-1970 | Base |
| American Motors Javelin | 1969-1970 | SST |
| American Motors Javelin | 1970 | SST Trans Am |
| American Motors Javelin | 1970 | SST Mark Donohue |
| American Motors Marlin | 1965-1967 | Base |
| American Motors Rebel | 1967-1970 | SST |
| American Motors Rebel | 1967-1968 | 550 |
| American Motors Rebel | 1967-1968 | 770 |
| American Motors Rebel | 1969-1970 | Base |
| American Motors Rebel | 1970 | The Machine |
| Buick Century | 1979 | Sport |
| Buick Century | 1979 | Special |
| Buick Century | 1979 | Limited |
| Buick Century | 1979 | Custom |
| Buick Regal | 1973-1987 | Base |
| Buick Regal | 1976-1977 | SR |
| Buick Regal | 1978-1982 | Sport |
| Buick Regal | 1978-1987 | Limited |
| Buick Regal | 1982-1983 | Estate Wagon |
| Buick Regal | 1982 | Limited Turbo |
| Buick Regal | 1983-1986 | T-Type |
| Buick Regal | 1984-1987 | Grand National |
| Buick Regal | 1987 | GNX |
| Buick Skylark | 1961-1972, 1975-1982, 1990-1991 | Base |
| Buick Skylark | 1968-1972, 1978-1979, 1983-1998 | Custom |
| Buick Skylark | 1970, 1972 | 350 |
| Buick Skylark | 1975-1977 | SR |
| Buick Skylark | 1976-1979 | S |
| Buick Skylark | 1978, 1980-1983 | Sport |
| Buick Skylark | 1980-1989, 1993-1997 | Limited |
| Buick Skylark | 1983-1984 | T-Type |
| Buick Skylark | 1990-1991 | Luxury Edition |
| Buick Skylark | 1990-1997 | Gran Sport |
| Buick Skylark | 1996 | Olympic Gold Edition |
| Chevrolet Bel Air | 1955-1957 | Nomad |
| Chevrolet Bel Air | 1955-1975 | Base |
| Chevrolet Bel Air | 1955-1956 | Beauville |
| Chevrolet Biscayne | 1958-1972 | Base |
| Chevrolet Biscayne | 1960 | Fleetmaster |
| Chevrolet Camaro | 1967-1973, 1975, 1989-1992 | RS |
| Chevrolet Camaro | 1967-1974, 1977-1987, 1991-1992 | Z28 |
| Chevrolet Camaro | 1967-1980, 1988 | Base |
| Chevrolet Camaro | 1967-1972 | SS |
| Chevrolet Camaro | 1973-1978, 1987 | LT |
| Chevrolet Camaro | 1976-1978 | LT Rally Sport |
| Chevrolet Camaro | 1976-1980 | Rally Sport |
| Chevrolet Camaro | 1979-1986 | Berlinetta |
| Chevrolet Camaro | 1981-1987 | Sport |
| Chevrolet Camaro | 1982 | Z28 Indianapolis 500 Pace Car |
| Chevrolet Camaro | 1985-1990 | Iroc-Z |
| Chevrolet Camaro | 1992 | Z28 Heritage Edition |
| Chevrolet Camaro | 1992 | RS Heritage Edition |
| Chevrolet Chevelle | 1964-1965 | Malibu Super Sport |
| Chevrolet Chevelle | 1964-1968 | 300 |
| Chevrolet Chevelle | 1965-1977 | Malibu |
| Chevrolet Chevelle | 1965-1969 | 300 Deluxe |
| Chevrolet Chevelle | 1966 | Super Sport 396 |
| Chevrolet Chevelle | 1967-1970 | SS 396 |
| Chevrolet Chevelle | 1967-1972 | Concours |
| Chevrolet Chevelle | 1968-1972 | Nomad |
| Chevrolet Chevelle | 1968, 1970-1972 | Base |
| Chevrolet Chevelle | 1968 | Nomad Custom |
| Chevrolet Chevelle | 1969-1972 | Greenbrier |
| Chevrolet Chevelle | 1969-1972 | Concours Estate |
| Chevrolet Chevelle | 1971-1972 | Heavy Chevy |
| Chevrolet Chevelle | 1971-1972 | SS |
| Chevrolet Chevelle | 1973 | Malibu Estate |
| Chevrolet Chevelle | 1973 | Deluxe |
| Chevrolet Chevelle | 1974-1977 | Malibu Classic |
| Chevrolet Chevelle | 1974-1976 | Malibu Classic Estate |
| Chevrolet Chevy II | 1962-1968 | Nova |
| Chevrolet Chevy II | 1962-1967 | Base |
| Chevrolet Chevy II | 1964-1967 | Nova SS |
| Chevrolet Corvette | 1965-1974, 1977-1978 | Base |
| Chevrolet Corvette | 1975-1976 | Stingray |
| Chevrolet Corvette | 1978 | Indianapolis 500 Pace Car |
| Chevrolet Corvette | 1978 | Silver Anniversary Edition |
| Chevrolet El Camino | 1968-1987 | Base |
| Chevrolet El Camino | 1968-1974 | Custom |
| Chevrolet El Camino | 1968-1987 | SS |
| Chevrolet El Camino | 1975-1977 | Classic |
| Chevrolet El Camino | 1977-1978, 1981-1986 | Conquista |
| Chevrolet El Camino | 1979-1981 | Royal Knight |
| Chevrolet Impala | 1958-1976 | Base |
| Chevrolet Impala | 1964-1967 | SS |
| Chevrolet Impala | 1975-1976 | Sport |
| Chevrolet Impala | 1975-1976 | Custom |
| Chevrolet Impala | 1976 | S |
| Chevrolet Impala | 1976 | Custom Landau |
| Chevrolet Malibu | 1975, 1978-1983 | Classic |
| Chevrolet Malibu | 1978-1980 | Classic Estate |
| Chevrolet Malibu | 1978-1981 | Base |
| Chevrolet Malibu | 1978-1981 | Classic Landau |
| Chevrolet Malibu | 1979-1980 | Estate |
| Chevrolet Malibu | 1979-1980 | Classic Sport |
| Chevrolet Malibu | 1979 | Police |
| Chevrolet Malibu | 1979 | Landau |
| Chevrolet Malibu | 1979-1980 | Sport |
| Chevrolet Monte Carlo | 1970-1974, 1979, 1981 | Base |
| Chevrolet Monte Carlo | 1973-1974, 1976, 1978-1981 | Landau |
| Chevrolet Monte Carlo | 1973, 1975-1977 | S |
| Chevrolet Monte Carlo | 1978, 1980 | Sport |
| Chevrolet Nova | 1969-1979 | Base |
| Chevrolet Nova | 1973-1975, 1978-1979 | Custom |
| Chevrolet Nova | 1975-1978 | Police |
| Chevrolet Nova | 1975 | LN |
| Chevrolet Nova | 1976 | SS |
| Chevrolet Nova | 1976-1977 | Concours |
| Chevrolet Nova | 1977-1979 | Rally |
| Oldsmobile Cutlass | 1965-1967, 1980 | Base |
| Oldsmobile Cutlass | 1965-1967 | Holiday |
| Oldsmobile Cutlass | 1967 | Turnpike Cruiser |
| Oldsmobile Cutlass | 1979 | Vista Cruiser |
| Oldsmobile Cutlass | 1979 | Vista Cruiser Brougham |
| Oldsmobile Cutlass | 1980-1981 | LS |
| Oldsmobile Cutlass | 1980-1981 | Brougham |
| Oldsmobile Cutlass | 1981 | Supreme |
| Oldsmobile Omega | 1973, 1979 | Base |
| Oldsmobile Omega | 1979 | Brougham LS |
| Oldsmobile Omega | 1979 | Brougham |
| Pontiac Catalina | 1971-1972 | Base |
| Pontiac Catalina | 1971-1972 | Safari |
| Pontiac Catalina | 1971-1972 | Brougham |
| Pontiac Firebird | 1967-1969 | Sprint |
| Pontiac Firebird | 1967 | 326 |
| Pontiac Firebird | 1967-1969 | 400 |
| Pontiac Firebird | 1967-2002 | Base |
| Pontiac Firebird | 1967-1968 | HO |
| Pontiac Firebird | 1968-1969 | 350 |
| Pontiac Firebird | 1969-2002 | Trans Am |
| Pontiac Firebird | 1969 | 350 HO |
| Pontiac Firebird | 1970-1981 | Esprit |
| Pontiac Firebird | 1970-1981, 1989-2002 | Formula |
| Pontiac Firebird | 1982-1986 | S/E |
| Pontiac Firebird | 1989 | Trans Am GTA SE |
| Pontiac Firebird | 1989-1992 | Trans Am GTA |
| Pontiac Firebird | 1994 | Trans Am GT |
| Pontiac GTO | 1964-1966, 1969-1973 | Base |
| Pontiac GTO | 1970-1971 | The Judge |
| Pontiac LeMans | 1979 | Safari |
| Pontiac LeMans | 1979 | Base |
| Pontiac Phoenix | 1979 | LJ |
| Pontiac Phoenix | 1979 | Base |
| Pontiac Phoenix | 1979 | SJ |

If you've added boost, tuned for more power, or simply want better throttle control, then your stock clutch won't cut it. That?s where ACT (Advanced Clutch Technology) comes in delivering high-performance clutch kits and flywheels designed for real drivers who push their builds on the street, strip, or track.
ACT?s lineup includes everything from daily driver friendly HD kits to hardcore twin disc setups for serious horsepower. Whether you?re launching hard in a WRX, drifting in a 370Z, or canyon carving in an M3, ACT gives you the torque capacity and engagement you need without sacrificing drivability.
Why ACT? Because Power Without Control Is Useless.ACT doesn?t just make universal performance parts ? they build complete, vehicle-specific clutch solutions for enthusiast favorites. Whether you daily a Civic Type R, track a Subaru STI, drift a 240SX, or drag a Mustang GT, ACT offers the right clutch to match your build goals.
Top supported platforms include the Nissan 350Z/370Z, Toyota Supra A90, Chevy Camaro SS/ZL1, Mitsubishi Evo, Ford Focus RS/ST, and BMW M3/M4 ? each with clutch options tuned to your driving needs.
What ACT Offers:ACT isn?t hype ? it?s proven. Their clutches are SFI-certified, track-tested, and used by racers in drag, time attack, autocross, drift, and rally. But what really matters? They hold power, last longer, and feel right even after hundreds of hard launches or hours of canyon carving.
Whether you're upgrading for more power or replacing a tired OEM clutch, ACT gives you the bite, strength, and feel to drive harder with confidence. No compromises, no excuses just parts that work when it matters.