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Drag racing's biggest stars have relied on Hays clutches since SEMA Hall of Famer Bill Hays decided back in 1958 that there had to be a way to build one that could stand up to racing's unimaginable power and torque. Now part of Holley Performance, Hays continues to develop complete clutch kits for an infinite number of high-performance applications, pressure plates for precise gear changes, clutch discs for smooth, chatter-free engagement, and flywheels and flexplates ideal for today's vehicles.
Make | Model | Years | Engine | Fitment Notes |
Ford | Mustang II | 1974 | 2.8L / 171 / V6 2.3L / 140 / L4 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang II | 1975 | 2.3L / 140 / L4 2.8L / 171 / V6 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang II | 1976 | 2.3L / 140 / L4 2.8L / 171 / V6 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang II | 1977 | 2.3L / 140 / L4 2.8L / 171 / V6 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang II | 1978 | 5.0L / 302 / V8 2.3L / 140 / L4 2.8L / 171 / V6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1964 | 4.7L / 289 / V8 4.3L / 260 / V8 3.3L / 200 / L6 2.8L / 170 / L6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1965 | 4.3L / 260 / V8 3.3L / 200 / L6 2.8L / 170 / L6 4.7L / 289 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1966 | 3.3L / 200 / L6 4.7L / 289 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1967 | 7.0L / 428 / V8 6.4L / 390 / V8 4.7L / 289 / V8 3.3L / 200 / L6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1968 | 7.0L / 427 / V8 5.0L / 302 / V8 7.0L / 428 / V8 6.4L / 390 / V8 4.7L / 289 / V8 3.3L / 200 / L6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1969 | 7.0L / 429 / V8 7.0L / 428 / V8 5.0L / 302 / V8 4.1L / 250 / L6 6.4L / 390 / V8 5.8L / 351 / V8 3.3L / 200 / L6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1970 | 3.3L / 200 / L6 5.0L / 302 / V8 4.1L / 250 / L6 5.8L / 351 / V8 7.0L / 429 / V8 7.0L / 428 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1971 | 4.1L / 250 / L6 5.0L / 302 / V8 7.0L / 429 / V8 5.8L / 351 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1972 | 4.1L / 250 / L6 5.0L / 302 / V8 5.8L / 351 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1973 | 4.1L / 250 / L6 5.8L / 351 / V8 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1979 | 2.3L / 140 / L4 2.8L / 171 / V6 3.3L / 200 / L6 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1980 | 2.3L / 140 / L4 3.3L / 200 / L6 4.2L / 255 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Ford | Mustang | 1981 | 2.3L / 140 / L4 3.3L / 200 / L6 4.2L / 255 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1967 | 3.3L / 200 / L6 | 2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1971 | 1.6L / 98 / L4 2.0L / 122 / L4 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1972 | 2.0L / 122 / L4 1.6L / 98 / L4 2.6L / 156 / V6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1973 | 2.0L / 122 / L4 2.6L / 156 / V6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1974 | 2.8L / 171 / V6 2.0L / 122 / L4 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1975 | 2.3L / 140 / L4 2.8L / 171 / V6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1976 | 2.3L / 140 / L4 2.8L / 171 / V6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1977 | 2.3L / 140 / L4 2.8L / 171 / V6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1979 | 3.3L / 200 / L6 5.0L / 302 / V8 2.3L / 140 / L4 2.8L / 171 / V6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1980 | 3.3L / 200 / L6 4.2L / 255 / V8 2.3L / 140 / L4 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Capri | 1981 | 2.3L / 140 / L4 4.2L / 255 / V8 3.3L / 200 / L6 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1967 | 4.7L / 289 / V8 6.4L / 390 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1968 | 7.0L / 427 / V8 6.4L / 390 / V8 4.7L / 289 / V8 5.0L / 302 / V8 7.0L / 428 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1969 | 7.0L / 428 / V8 6.4L / 390 / V8 5.0L / 302 / V8 7.0L / 429 / V8 5.8L / 351 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1970 | 7.0L / 428 / V8 6.4L / 390 / V8 7.0L / 429 / V8 5.8L / 351 / V8 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1971 | 7.0L / 429 / V8 5.8L / 351 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1972 | 5.8L / 351 / V8 | 2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1973 | 7.5L / 460 / V8 6.6L / 400 / V8 5.8L / 351 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1974 | 6.6L / 400 / V8 5.8L / 351 / V8 7.5L / 460 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1975 | 6.6L / 400 / V8 7.5L / 460 / V8 5.8L / 351 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1976 | 6.6L / 400 / V8 5.8L / 351 / V8 7.5L / 460 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1977 | 5.8L / 351 / V8 5.0L / 302 / V8 6.6L / 400 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1978 | 5.8L / 351 / V8 6.6L / 400 / V8 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1979 | 5.8L / 351 / V8 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1980 | 3.3L / 200 / L6 4.2L / 255 / V8 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Mercury | Cougar | 1981 | 2.3L / 140 / L4 3.3L / 200 / L6 4.2L / 255 / V8 5.0L / 302 / V8 |
2800-3200 RPM Stall; 10 in. dia.; 11-7/16 in. Bolt Pattern; 26 Spline Input Shaft; 1.375 in. Crank Pilot |
Anti Balloon Plate | Yes |
Anti-Balloon Plate | Yes |
Balanced | Yes |
Bolt Circle | 10-1/2" |
Bolt Circle Diameter | 11.4375 in. |
Crank Pilot Diameter | 1.375 in. |
Diameter | 10" |
Diameter (in.) | 10.000 in. |
Emission Code | 5 |
Input Shaft Spline Quantity | 26 |
Input Spline | 26 |
Lock Up Type | No |
Lock Up/Overdrive | No |
Part Type | Automatic Transmission Torque Converter |
Series | Full Race |
Stall | 2800-3200 |
Stall Speed (RPM) | 2800-3200 |
Trans Model | C4 |
Trans Year | 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1966, 1967, 1968, 1969, 1970, 1978, 1979, 1980, 1981, 1965, 1963, 1964 |
Transmission | C4 Case-Filled |
Transmission Model | C4 |
Use with Power Adder | Yes |
Use with Trans-Brake | Yes |