Durable, Streetable, Economic 318

340 automatics were all 727's from the factory. The only differences were the single wire neutral switch type in '68 and the externally balanced converters in late '72-3 to match the cast crank engines after April. 1, 1972.
So it was just the converters, and some wiring that were ever different. I was just wondering about this because a racer friend and a shop owner in California told me there were differences. The shop owner said it had to do with the drum in the front of the trans.:wack: