sometimes I wonder....

How about eengineers that didn't find a way to make a 904 for the slant that would work from the v8.

Simple,the 904 didn't exist before the /6, it was built specifically for the
/6....in an A-body.If you've read anything about TF trannys, they were commonly
(by the factory as well) referred to as TF6(904), and TF8(727), and never the twain
were intended to meet. "Till people wanted an 8, and mopar finished the new lite
LA 273, then they had to adapt a /6 tranny to the V-8. The 904 was smaller, lighter
and have you actually looked at the block architecture?Same bellhousings ain't a
happenin'.