Flywheels and Flexplates
Chevrolet Performance offers both internally and externally balanced flywheels and flexplates. It is critical that you use the correct design for your specific engine application. Engines with one-piece crankshaft seals require externally balanced flywheels or flexplates (except for ZZ427, ZZ572/620, ZZ572/720R and the Anniversary Edition 427). Check the accompanying charts to find the correct parts for specific engine applications.

Big-Block Flywheels
Part Number: 10185034
Engine Year: 1991-up
Outside Diameter: 14"
Crank Flange Bolt Pattern: 3.580"
Converter Bolt Pattern: 10.750" and 11.500"
Starter Ring Gear Teeth: 168
Technical Notes: Use with forged steel crank. Has dual-converter bolt pattern. (502 & 454 1-piece rear main seal)