Michael, the only data I have is that the 54 shop manual refers to both the long and short bellhousing motors being available in 54, all with powerflight. This seems to imply that the powerflight was somehow adapted to the long bellhousing. Both the cast iron torqueflights AND the powerflights have removable bellhousings so perhaps they simply made an adapter. If you are lucky this is what they did. For those who don't have an early car, the first Hemis (331ci until early 54) had the bellhousing cast as part of the engine block. This made the engine about a foot longer and another 7 million pounds heavier. Sometime in 54, they moved to the more normal engine block. Kerryp --- Michael <whynot2000@xxxxxxxx> wrote: > In mid year of 1953 the powerflite was introduced > question is did Chrysler also change the extended > bell housing cast with the block. I'm wondering if > you could exchange a fluid torque drive tranny for a > powerflite that was produced in the same year. It > would seem costly for Chrysler to introduce the > powerflite and a new block setup without the > extended bell casting all in one year not to mention > the assembly line learning curves. Can someone > answer what happened in mid year of 1953 with this > change and if the cast extended bell housing block > was also deleted at the same time. > > Michael > __________________________________________________ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com