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I need to get a big block 727 to put behind a big block stroker motor (approx. 600 hp street driven car). Is there any particular year or range of years of 727's that are better than others for this application? Should I look for an original 383-4 hp or 440-4 hp trans. or would a non-hp trans. suffice? A friend of mine has a 727 from a 1972 440 C-body that I can get if need be otherwise I will look for whatever is recommended.
That 72 would be a good choice for a couple reasons.
Being it’s from a land yacht it likely never got abused.
The internals are probably like brand new inside.
Also, it has the later pump/reaction shaft support/wide front clutch bushing. A 3 pinion front carrier is the carrier of choice, not a 4 pinion.
Check the front drum, if it has only 3 frictions you can easily modify the pressure plate in that drum to accept 4 discs.
I assume you will be using an aftermarket valve body, the rest of the components in the transmission are fine for your power level.
I would install a bolt in over running clutch.
