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Over tightened transmission mount bolt

2K views 4 replies 4 participants last post by  0trbo4myCHEVUICK 
#1 ·
well i was tightening my TH400 mount to the crossmember and "pop" the bolt falls loose. shreds of metal in the threads. has anyone ever used a tap and die set on a trans case? can i sleeve it? Im trying very hard not to freak out right now ive been dealing with this swap for 3 months now and i just want to drive my friggin truck.
Do i tap it to a bigger size bolt?
 
#3 ·
You can buy a thread insert kit for the bolt size that you need from your local parts store. The kit will come with a drill bit, a tap, thread inserts and an insert installer. You will then be able to re-install the original bolt after cleaning the aluminum out of the threads. Be careful not to drill to deep. The bit will want to grab in aluminum. A trick that I use is to grind the leading edge of the drill bit flat so that it scrapes the aluminum off instead of cutting it.
 
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