727 vs 904?

1970Duster said
Neither. Go with a GM 200R4 (2004R whichever you prefer to call it), lighter than both and you gain an overdrive gear so you can use 4.10 gears out back and not drive yourself insane while on the freeway. Plus the 200R4 is all hydralic! And yes this trannies can live behind high hp/TQ motors just fine.
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But at a cost that might be detrimental to some. From the factory the 2004R was never put in any high horsepower/torque applications. Lot's of V6's and small block V8 smogger engines yes (my kids 442 is an example). Factory engineers a lot smarter than we give them credit for. Just my opinion.