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What tap for bellhousing bolts??

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Old 05-13-2001, 10:02 AM
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Car: 89 IROC-Z
Engine: 383
Transmission: 700R4
What tap for bellhousing bolts??

I got my block back from the machine shop yesterday and one of the engine stand bolts won't thread in right. Those are the holes for the bellhousing right?? What size tap do I need to clean them up so I can get the bolt in??

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Old 05-13-2001, 10:35 AM
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Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
I belive they're 3/8th NC, just take one down to the HW store, and have'em match it up.
Old 05-13-2001, 11:47 AM
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What Mike said is the right size.
Old 05-13-2001, 11:59 AM
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SBC = 3/8-16 UNC. Use a bottoming tap instead of a plug tap to clean up all the threads.

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