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Main Bolt&Stud Hex Size for factory bolts

Old 07-15-2009, 01:55 PM
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Default Main Bolt&Stud Hex Size for factory bolts

Yes I did a search before posting this simple question. My apologies if it covered elsewhere.

I'll be tearing down a stock Ls1 shortblock with a knock to zero in on the source. I'm Doing this at a friends house away from my tools, so I was trying to get a gear bag together with the right sockets and ratchets for the task.

I remember the side bolts are 10mm hex, rods are 11mm, just could not remember what size hex head the main bolts and studs were.

Easy question for you experts I appreciate the help in advance.

Thanks Tech.
Old 07-15-2009, 03:42 PM
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Can't remember honestly if they're 14 or 15 something like that, just make sure you have some deep sockets because of the windage tray studs that stick off of the bolts.
Old 07-15-2009, 05:20 PM
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Excellent sir thank you for the help.


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