4 Inch twin disc clutch has been developed for vehicles requiring a holding capacity of 500 to 1300 ft/lbs of torque at the crank. The pressure plate features our patented centrifugal weight system for superior clamp load over stock and our patented ball bearing actuated pressure plate providing light pedal effort.

The discs are equipped with organic segmented facings providing increased holding capacity and the sprung/dampened drive disc provides smooth drivability. DYAD DS clutches are equipped with a lightened billet steel flywheel providing low inertia resulting in quicker RPM's.

Components are designed, machined and assembled in the USA. DYAD DS clutches are match balanced and ready for installation using the included ARP fasteners.

Application Details:

• Liter: 7
• Cylinders: 8
• BlockType: V
• Fuel Delivery Type: CARB
• Fuel Type: Gas
• CC: 6981
• CID: 426
• Engine Bore Inches: 4.25
• Engine Bore Metric: 107.9
• Engine Stroke Inches: 3.75
• Engine Stroke Metric: 95.2
• Aspiration Name: Naturally Aspirated
• Transmission Control Type: Manual

Details:

• Alignment Tool Included: Yes
• Clutch Disc Diameter: 264.2
• Counterweight Assist: Yes
• Crankshaft Bolt Hole Quantity: 8
• Disc Material: Organic/Carbon Composite
• Disc Type: Segmented face
• Disc Type (Sprung/Solid): Sprung
• Flywheel Counter Balance Weight: 0
• Flywheel Crank Bolt Size: 1/2 in x 20 x .875
• Flywheel Crank Flange Register: 2.16
• Input Shaft Diameter: 1
• Input Spline Quantity: 23
• Installed Height: 2.96
• Material: Billet Steel Flywheel / Nodular Iron Pressure Plate / Segmented Organic Friction
• Mounting Hardware Included: Yes
• Ring Gear Outside Diameter: 13.205
• Tooth Quantity: 130
• Torque Capacity: 1300
• Made in the USA: Assembled

Optional 130 Tooth, 8 Bolt Crank, Hemi and Wedge Eng., Locates On Crank Lip-Not Flange OD