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I was wondering to all who have replaced trannies in a z
The two mounting holes on the tunnel where you bolt the trans to the car, mine I can not get very tight, they thighten and a bit then kinda pop
and they are loose again , I can shift the trans side to side a bit after I tighten all I can
there seens no way into the box where the bolts tighten into to put a nut on the inside
any Ideas or comments that would help
 

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Either the bolts or the hole's threads are slightly stripped.

try new bolts, and if that doesnt work, you will have to re-tap larger threads into the hole. Not too hard...

Bryan
 

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Thanks for the insight, I was afraid of that!
I would imagine that the bolt holes themselves ( both are bad)are stripped, so I should tap up to say 16mm(the ones there are 15) ?
I am not too familiar with the process, the last time I tried to chase some threads was on a aluminum head( TR 7), next thing I know I am taking the head down to have it heli arc :)

thanks for the direction
 

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Re: re: 71z trans mount trouble

It's a been a while since I bolted in the ones in on my '70.
I think they are 8mm x 1.25. If you can find a couple of bolts first, I would tap it to 9mm, 10mm is too large.
Sort of a moral thing, but never try to use a SAE bolt on a Z car.......
 
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