New from Summit - the Tilton ST-246 Twin-Disc Clutch Assemblies are now available. These clutches are built tough to handle a wide variety of high torque engine combinations. See more details below.
Engines rated at 800, 900, or even 1,000-plus lbs.-ft. of torque are not uncommon. That’s a lot of torque for a clutch assembly to handle. Years ago, racers found a solution in the twin-disc clutch. The extra disc increases the clutch assembly’s total surface area, which essentially doubles the clamping force compared to a similar single-disc clutch. A twin-disc clutch also does away with the need for a really stiff pressure plate to apply high clamp loads.
A great example of a streetable twin-disc clutch is Tilton’s new ST-246. Designed for Tremec T-56 six-speed and TKO five-speed transmissions, Tilton borrowed technology from its racing clutches when it designed the ST-246.
The Tilton ST-246 twin-disc clutches are available with two disc options:
The organic discs are rated to 850 lbs.-ft. of torque, and have a sprung center hub to dampen engine vibrations, reduce gearbox noise, and provide smooth engagement on the street. Rated to hold up to 1,250 lbs.-ft. of torque, the cerametallic discs have a solid center hub that is stronger than a sprung hub, and also provide positive, precise clutch engagement. That makes them a great choice for cars that see a lot of track time.
Tilton’s ST-246 Twin-Disc Clutches are compatible with most OEM release bearings. Pairing one up with a Tilton hydraulic release bearing is also a great option.
- Gen 5 and 6 Camaro
- C5, C6, and C7 Corvette
- Small and big block Chevy
- GM LS, 6-bolt
- GM LSX, LT1, and LT4, 8-bolt
- Small block Ford
- Ford 5.0L Coyote
- Precision-machined aluminum clutch cover that is stronger, stiffer, and has better dynamic balance than an OEM-type stamped steel cover
- High-mass pressure plate and floater plate have high heat capacity and resist warpage
- Heavy-duty straps attach pressure and floater plates to the cover to minimize noise and provide a clean clutch release
- Chromoly steel flywheel has a precision register to locate the clutch and provide optimal balance of the clutch/flywheel assembly —a much better solution than the loose-fitting bolts and dowels used with stamped steel clutches