Early 360

the 360 was first available in 1971 vehicles - which were at the dealers in September 1970. the 360 was not a vastly different animal than a 318 or 340. J heads, same rockers, oil pump , cams interchange etc. etc. Differences only crank, pistons, main bearings, external balnance. blocks were first cast in 1970. The 340 TA used J head 3418915 castings, same casting as some 1970 340s and 1971 and 1972 340s and 360s