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Chevy Big-Block V8  |  Flywheels and Flexplates
 

 
 

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Modifier      
10185034 Flexplate 1991 & Later      
For 1991 & later Gen. V & Gen VI 454 (7.4L) HO & 502 HO engines. This flexplate is required when using a steel forged crank on Gen. V design engines. This flexplate is 14" diameter (168 teeth).   Small Image
Technical Notes: This flexplate is similar to Mark IV design but not interchangeable because of balance. It has a dual-bolt pattern design. When using a 4L80 automatic transmission, only three attaching bolts can be used.

Modifier      
10185035 Flexplate 1991 & Later      
For use with 454 (7.4L) Gen. V & Gen VI design engine with a cast iron crankshaft. This flexplate is 14" diameter (168 teeth).   Small Image
Technical Notes: This flexplate is similar to Mark IV design but not interchangeable because of balance. It has a dual-bolt pattern design.

Modifier      
14001992 Flexplate (454ci) 1970-90      
This counterweighted 14" OD flexplate is used with externally balanced 454ci big-block V8s with automatic transmissions.   Small Image
Technical Notes: Do not use with internally balanced engines. 168 tooth ring gear. For use with Mark IV engine only.

Modifier      
14085720 Flywheel      
Outside diameter is 12 3/4" for years 1955-85. Crank Flange bolt pattern: 3.58"; clutch dia.: 10.4"; starter ring gear teeth: 153. Lightweight nodular iron flyweel. Weighs approximately 15 pounds. For two piece crank seal.   Small Image
 

Modifier      
14096987 Flywheel (Std.) 454/502 ci      
Gen. V & Gen VI 1991 through current year, 14" diameter. For 11" clutch.   Small Image
Technical Notes: Nodular iron with casting P/N 14096805

Modifier      
3963537 Nodular Iron Flywheel (454ci) 1970-90      
This counterweighted flywheel is designed for externally balanced 454ci big-blocks. Its lightweight design reduces the engine's rotating mass and improves its throttle response. This flywheel uses a 10.4" diameter clutch. Its ring gear outside diameter is 123/4". Flywheel ID #3935411. Approximate weight 15 lbs.   Small Image
Technical Notes: This flywheel is unbalanced; do not use with internally balanced engines. Use with counterweighted balancer P/N 3963530. 153 tooth starter ring gear. For use with Mark IV engine only.

Modifier      
3991469 Flywheel      
Outside diameter is 14" for years 1955-85. Crank Flange bolt pattern: 3.58"; clutch dia.: 10.4", 11"; starter ring gear teeth: 168. For two-piece crank seal. This 14" diameter manual transmission flywheel accepts an 11" diameter heavy-duty clutch. It can be used with all internally balanced Chevy big-block V8 engines.   Small Image
 

Modifier      
3993827 Flywheel (454ci) 1970-90      
This counterweighted 14" diameter flywheel for manual transmission applications provides the correct engine balance for externally balanced 454ci big-blocks. It is drilled for an 11" diameter clutch. Flywheel ID #3993457.   Small Image
Technical Notes: Do not use with internally balanced engines. Use with counterweighted balancer P/N 3963530. 168 tooth starter ring gear. For use with Mark IV engine only.

Modifier      
471597 Flexplate 1965-69      
14" OD flexplate for internally balanced big-block engines with automatic transmission.   Small Image
Technical Notes: Do not use with externally balanced 454ci engines. 168 tooth ring gear. For use with Mark IV engine only.

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