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Where did this come from?

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Old 06-01-2013, 06:16 PM
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markbett
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Default Where did this come from?

Not the beercap, the bolt. found it in my driveway after I moved my vet. Any ideas? It's too big for the steering coupling, and they're all there anyway.
Old 06-01-2013, 06:28 PM
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myoriginal77
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Header bolt ???
Old 06-01-2013, 06:33 PM
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markbett
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Nope, all accounted for. Notice the 12 point head. I thought maybe a caliper bolt?
Old 06-01-2013, 07:04 PM
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blueray72
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Seat to track bracket bolt?
Old 06-01-2013, 07:25 PM
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LannyL81
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U-joint strap bolt?
Old 06-01-2013, 07:52 PM
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markbett
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Nope, all accounted for
Old 06-01-2013, 08:00 PM
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kanvasman
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Maybe from PO and it fell somewhere inside the engine bay and he never found it. . Actually here is the bolt. http://dmpfasteners.com/shop/bolts-76/12-pnt-db-270/. Not sure but if you have a stick, maybe a bolt for the clutch assembly.
Old 06-01-2013, 08:29 PM
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TimAT
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3/8 standard thread, looks like about 1" long. I'd guess header bolt just from the appearance. But if they're all there, maybe it got dropped and replaced?
Old 06-01-2013, 09:57 PM
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j61man
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Check the steering shaft bolt above the steering box.
Old 06-02-2013, 07:07 AM
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scottw
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My vote is non-stock w/ the 12 point head.
I do like the Yeungling bottle cap though.
Old 06-02-2013, 07:17 AM
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markbett
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Not steering related they're all there. Not header. I do have a stick so I'll look at that. 2 other clues, i found it on the driver side and there's no oil on it. I just replace the motor so something came loose. Engine mount?

With my luck, I'll drive the car and when I'm at the furthest point away from home, the other bolt will fall out. I'm assuming there's 2 of these holding something together.
Old 06-02-2013, 12:17 PM
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oldsarge
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Looking at the threads, it looks like it has been out of its hole for awhile. I would say it was a bolt that got dropped at some time, never found and got replaced. Probably just finally came loose and fell to the driveway.
Old 06-03-2013, 03:20 AM
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jyounane
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Check the Fuel Pump bolts...

Joe
Old 06-03-2013, 08:29 AM
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Street Rat
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Originally Posted by oldsarge
Looking at the threads, it looks like it has been out of its hole for awhile. I would say it was a bolt that got dropped at some time, never found and got replaced. Probably just finally came loose and fell to the driveway.


Probably an old header bolt.
Old 06-03-2013, 08:37 AM
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dmaxx3500
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thats a GM high perf ''camshaft to timing gear'' bolt





















ha,ha,looks like a old header bolt
Old 06-03-2013, 08:45 AM
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markbett
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I'll check that out. Thanks!
Old 06-10-2013, 01:01 PM
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markbett
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Transmission, for those of you keeping track
Old 06-10-2013, 01:17 PM
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AirborneSilva
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Originally Posted by LannyL81
U-joint strap bolt?
that'd be my guess too.
Old 06-10-2013, 03:15 PM
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Denpo
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The only 12 sided bolt I ever saw while dissasembling my Corvette was the rag joint bolt.

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