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Stripped tranny bolt; what do I do?

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Old 10-13-2008, 03:56 PM
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doc
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Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
Stripped tranny bolt; what do I do?

The bolt that is stripped is an 8 x 1.25mm, 20mm long. (it's one of the tranny pan bolts). I wanted to replace it with a 9 x 1.25mm, but two local hardware stores do not carry that bolt size.

What do I do?

I have metric & English taps & dies. One alternative is to mail order in some 9 x 1.25mm bolts OR go to a 3/8 - 16 or 3/8 - 24 bolt.

The car is an '87 with a 700R4 tranny.

Last edited by doc; 10-13-2008 at 04:02 PM.
Old 10-13-2008, 05:10 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Stripped tranny bolt; what do I do?

Or Helicoil it.
Old 10-13-2008, 07:26 PM
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Re: Stripped tranny bolt; what do I do?

ive had good luck with the helicoil kits- just take your time
Old 10-13-2008, 10:37 PM
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doc
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Join Date: Jul 1999
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Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
Re: Stripped tranny bolt; what do I do?

I have never used a helicoil. Maybe next time. I solved the matter by going with a 3/8 - 16 tap & bolt.

Thank you for the replies.
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