Saginaw 4 speed any good?

[Lobo'74]

I know the Saginaw 3 and 4 speeds use what is basically the same case and the same mainshafts. I have been told the 3 speed is VERY stout. My 3 speed won't go into reverse and is tight in first. I found a Saginaw 4 speed locally for $300 at a junk yard. Already pulled and ready to go.

Question - what kind of horse power can the 4 speed handle? I know its not the Muncie . . . I saw one internet article from a hot rod magazine that said to pass buying on Saginaw 4 speeds. I saw one internet article that said they were good for 300HP (my 350 puts out 325-350hp). I have also seen internet articles from folks with original Z28's running the Sag 4 spd, as well as people using them on the drag strip.

Anyone have any first hand knowledge of the capabilities of the Saginaw 4 speed?