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ACT Heavy Duty Pressure Plate American Motors | Buick | Chevrolet | Oldsmobile | Pontiac 1964-1998 - GM012
ACT Heavy Duty Pressure Plate American Motors | Buick | Chevrolet | Oldsmobile | Pontiac 1964-1998 - GM012 - Image 3 ACT Heavy Duty Pressure Plate American Motors | Buick | Chevrolet | Oldsmobile | Pontiac 1964-1998 - GM012 - Image 2 ACT Heavy Duty Pressure Plate American Motors | Buick | Chevrolet | Oldsmobile | Pontiac 1964-1998 - GM012 - Image 3

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

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1968-1970
 American Motors AMX
1958-1966
 American Motors Ambassador
1965-1966
 American Motors Classic
1970-1977
 American Motors Hornet
1969-1970
 American Motors Javelin
1965-1967
 American Motors Marlin
1967-1970
 American Motors Rebel
1979
 Buick Century
1973-1987
 Buick Regal
1961-1972, 1975-1998
 Buick Skylark
1955-1975
 Chevrolet Bel Air
1958-1975
 Chevrolet Biscayne
1967-1992
 Chevrolet Camaro
1964-1977
 Chevrolet Chevelle
1962-1968
 Chevrolet Chevy II
1965-1978
 Chevrolet Corvette
1968-1987
 Chevrolet El Camino
1959-1976
 Chevrolet Impala
1973-1983
 Chevrolet Malibu
1970-1980
 Chevrolet Monte Carlo
1969-1979
 Chevrolet Nova
1965-1967, 1979-1981
 Oldsmobile Cutlass
1973, 1979
 Oldsmobile Omega
1971-1972
 Pontiac Catalina
1967-2002
 Pontiac Firebird
1964-1966, 1970-1973
 Pontiac GTO
1979
 Pontiac Phoenix

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ACT ? Advanced Clutch Technology | Clutch Kits & Flywheels Built to Handle Real Power

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.
  • Hold More Power Engineered to handle turbo, supercharger, and high-compression builds
  • Faster Engagement Stronger pressure plates for better bite off the line
  • Better Pedal Feel Balanced response without going full race-car stiff
  • Reduced Rotational Mass Lightweight flywheels improve rev-matching and response
  • No Guesswork Direct-fit applications, no fabbing, no hassle
ACT Clutch Kits and Flywheels Fit the Cars Enthusiasts Build

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:
  • Performance Clutch Kits From HD street kits to twin-disc race systems
  • Clutch Discs 6-puck, full-face, rigid or sprung to match your style
  • Pressure Plates Heavy-duty options that increase clamp load without sacrificing control
  • Chromoly Lightweight Flywheels Quicker revs, smoother shifts, and less drivetrain stress
  • Complete Hardware Kits Everything you need for a proper install
Performance Tested. Driver Approved.

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.

ACT warrants all products to be free of defects in materials and workmanship for normal use and service for a period of one (1) year from retail purchase. Written notice must be immediately given to ACT within the warranty period. We require a copy of the purchase receipt showing the unit was purchased from an Authorized Dealer or Advanced Clutch Technology directly to verify the product is under warranty. Products purchased used do not carry a warranty. This warranty is to the original purchaser and is non-transferable. All non-warranty items are subject to a $50 inspection bench test fee.

ACT reserves the right to examine any part returned for warranty claim to determine, to ACT's satisfaction, whether the material or workmanship of the part does not conform to this limited warranty. ACT's obligation under this warranty shall be limited to repairing, replacing, or crediting, at its option, any part which is deemed covered by ACT. No labor, lift or storage charges will be reimbursed for any reason. Damage to ACT's parts resulting from misuse, improper use, or abuse shall void this limited warranty. Failure to follow ACT's installation instructions and the vehicle manufacturers installation procedures and specifications shall void this limited warranty.

ACT undertakes no responsibility for the quality of the goods except as otherwise provided in this contract. ACT assumes no responsibility that the goods will be fit for any particular purpose for which you may be buying these goods, except as otherwise provided in the contract. ACT shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty.

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