Part # Diameter Teeth Comments
3991469 14" 168 Use with two-piece seal, internally balanced
3986394 14" 168 400 external balance, two-piece seal
10105832 14" 168 1986-Later, one-piece rear seal, exernally balanced.
14085720 12 3/4 153 Lightwweight (15 lbs), nodular iron, two-piece seal, internally balanced.
14088646 12 3/4 153 1986-Up, Lightwweight (15 lbs), nodular iron, two-piece seal, internally balanced.
14088648 14" 168 1986-Later, one-piece rear seal, externally balanced
14088650 12 3/4 153 1986-Up, one-piece rear seal, externally balanced
10174482 1989-Up with six-speed manual transmission, use with starter PN-10455709
Flywheels are drilled for different diameter clutch assembles: 10.4" - 11.0" and 11.85" are avaliable. Some flywheels are drilled for two different clutch diameter patterns.
Part # Diameter Teeth Comments
471529 12 3/4 153 Two-piece seal, internal balance
471578 14" 168 400 external balance, two-piece rear seal
471598 14" 168 Two-piece seal blocks, internal balance
10128412 12 3/4 153 1986-Up one-piece rear seal, external balance
10128413 14" 168 1986-Up, one.piece seal, extra thisck, heavy duty, external balance
10128414 14" 168 1986-1996, one-piece rear seal, external balance
14088761 14" 168 1989-Later 350 HO, one-piece rear seal, external balance
14088765 12 3/4 153 1986-Later, one-piece rear seal, external balance
14088767 14" 168 1989-Later 350 HO, one-piece rear seal, external balance, heavy duty

Flexplates are drilled for different torque converter mounting bolt patterns. Some flexplates are drilled for two different patterns. Torque converter bolt patterns on flexplates have been 9.75" - 10.75" and 11.75". Flywheels and flexplates for one-piece rear seal blocks have been smaller 3.0" bolt pattern. Make sure that you use the proper flywheels and flexplates, bolts and star shaped washers. A flywheel bolt PN-3727207, 7/16 - 20 x 27/32" is 7/8 overall. Dont mix them up, use the right fasteners.


Part # Dia" Clutch Dia" Teeth Application
14085720 12 3/4 10.4" 153 65-69 Mark IV, Lightwweight (15 lbs), nodular iron, two-piece seal, internally balanced.
3963537 12 3/4 10.4" 153 70-90 Mark IV external balance 454, 15 lbs
3991469 14" 11" 168 66-69 Mark IV internal balance 454
3993827 14" 11" 168 70-90 Mark IV external balance 454
14096987 14" 11" 168 91-up Gen. V/IV external balance with 4" stroke forged steel crank, 454, 502
10101169 14" 11" 168 91-up Gen. V/IV external balance with 4" stroke cast nodular iron crank, 454, 502
Part # Diameter Teeth Application
471529 12 3/4 153 65-69 Mark IV, Two-piece seal, internal balance
471597 14" 168 65-69 Mark IV, Two-piece seal, internal balance
14001992 14" 168 70-90 Mark IV external balance 454
10185034 14" 168 91-up Gen. V/IV external balance with 4" stroke forged steel crank, 454, 502
10185035 14" 168 91-up Gen. V/IV external balance with 4" stroke cast nodular iron crank, 454, 502

Remember to use correct bolts and fasteners.


Tommy Ledberg