All my old Chilton manuals said the 70s and earlier 80s 318s were 8.6:1 and 360s were "advertised" as 8.2- 8.4 but then in the 80s some of the 360s were advertised as actually being below 8:1, the heavy duty ones in 1 ton trucks and such being listed amongst the lowest.
I wonder then if the ones advertised as below 8:1 were really in the low 7s.... My experience with engines from that era is as built they are all less than "advertised" CR.... Pitiful. No wonder some of these engines were such wheezing gas sucking slugs..... Not just talking Mopar either ...
