Racing 727 help.

Bewy said

I would tread very carefully with this rebuild. The weak spot has been found, so s new stronger lever fixes THAT problem. So if the 1-2 shift remains remain super hard, where would the next weak spot be? A cracked case?

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I haven’t seen a case crack from high pressure RMVB. Not saying it can’t happen if a case is damaged in some way.

Powerglide stock cases typically crack with high pressure valve bodies but I have yet to see it with a 727.