Casting number should be on r.h. side of block, close the front above oil pan flange. Just ahead of the pump.

Last edited by BC59; 04/15/2022 1:51 AM.

BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022