Mark I have seen 325 HP cars with air.....my 11B November 1966 built 396 Caprice has factory A/C on the car...I think they had a handle on how to hang it on the motor....Like I said no high horse motors but grandma could have air....
http://www.camaros.org/index.shtml click on 1967 and it calls out the block codes for A/C, but no 375HP motors.
show me some docs if I am confused????
Thnx Bud.