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In a back half car the cars tend to twist even thou you may not see it. I run a front engine plate and a mid plate. The tranny is bolted down to the trans crossmember. So when the chaasis flexes the weakess point break. On a poweglide the stock cases are weak. I have the JW bell housing and tail shaft. Glides tend to crack right above the shifter arm as mine did. I should have not bolted the tail housing down and the tranny could have move with the chassis and not broke. I will upgrade to an aftermarket case to fix this problem.

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Are you using a solid trans mount with a front and
mid plate.... use a stock rubber trans mount

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