A.R.

Part numbers and some casting numbers are here. (this info might have been posted above)

The 6v/12v 139/168 teeth flywheels are poorly/confusingly delineated in that Master Parts Catalog (for 1955 1st and 2nd, 1/2 ton vs larger trucks).
Assume that 1955-2nd Chevrolet trucks are 12v with 168 teeth.

Here are the part numbers (no casting nos):
8615574 - 168 teeth
8615138 - 139 teeth (corrected number- thanks)

Last edited by tclederman; 05/02/2016 1:45 PM. Reason: corrected # - thanks
Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.