Originally Posted by Achipmunk
built my 261 3 or 4 years ago at 12 degree. never any problem.

My notes show 12 deg as well.

Last edited by BC59; 12/31/2021 5:43 PM.

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