Which automatic

Ted Carlson said

A 904 out of a 70's SB car would work great and not rob HP like a 727. I raced an 11.0? SB Barracuda for 10 years with a 904. My friend has 3 A body race cars that run in the 10's with 904's. One with a low gear set (2.74 first gear) would make a great street car. A 727 might be good for 4000+ car but not an A body. LOL

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oh god, not this again....highflyer, yes, a 727 is good for a v8 A body...
the only difference in the 727 will be based on what type of V8 you will be running.....SB or BB...then the housing is different.

If you take two identical cars, one with a 727 and another with a 904, the quarter mile time is absolutely miniscule ..like a 1/16 of a second..search this forum for posts on this topic...this topic it has been gone over (and over again) before..

Locally, we have a very well known MOPAR guy that owns/runs one of the best transmission repaid shops in my province..guess what he runs in his A body..

Anyway, I would buy what ever is most available/ cheapest to you..and what you are most comfortable with...

Grassy.