quote: At least I'm pretty sure it's a 250 since it has the integrated head



Bingo. That valve cover was for PAIR (pulse air injection reaction), didn't use a pump. Used a 2bbl Rochester Vari-jet carb on pick up engines. The integrated head was never used on 292.


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