Since I just put a 340 in a 66 barracuda that had a 318 in it, why did it fit the 904 transmission? The timing marker and damper are the 273 oem units to fit. And yes I did reuse the flex plate with oem converter.
A 318 was never available in a '66 Barracuda, so whoever did the swap before could have used a later 904 and converter whose snout properly fit the 318 as well as the 340 crank.
Someone did say that they've used the small snout converter in a later crank without an adapter ring, but it's just not the right way of doing it. Chrysler engineered it for a snug fit for a reason.
As long as the balancer and timing mark are used together, they will line up properly. I believe the early set-up was on the passenger side while the later set-up was on the driver's side.
