John B

iTrader: (10)

How many people have actually experienced either a mainshaft failure or rear yoke input shaft failure? It almost seems like a waste to do the T56 Magnum upgrade if this is all that gets upgraded from a "standard" T56....I would think the gears would go before the mainshaft? Those with high torque/high HP broken T56's please chime in!

thesource

iTrader: (60)

The yokes from the larger mainshafts tend to have a thicker wall on them which makes them stronger. They also usually use a larger u joint as well.

1CAMWNDR

iTrader: (21)

I have not seen many broken shafts either, input or output.
I also don't know if it is worth it unless you are trying to dead hook an 800 rwhp race car. But who professionally drag races a manual tranny anymore?