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Author Topic: SBC oil pump bolt size  (Read 2228 times)
69z28302
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« on: December 13, 2009, 08:22:48 PM »

Just need to the size and length of the bolt that holds the oil pump on a small block. I know I have one but want to be sure I use the correct one.
Thanks
CRG
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BlackoutSteve
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« Reply #1 on: December 14, 2009, 06:51:59 AM »

ARP's catalog list the stud as 3.125" length for high volume. Standard volume I assume is shorter, but no detail.
(pg 50)

As a bolt, that probably equates to about a 2-5/8" - 2-3/4" UHL.

7/16 - 14  Wink
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Restoring my RHD 69 Jane in Melbourne, Australia.
http://www.usmuscle.com.au/Forum/showthread.php?t=2840
JohnZ
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« Reply #2 on: December 14, 2009, 10:20:45 AM »

That's a special bolt - P/N 3892678 (7/16"-14 x 2") for small-blocks, 3860382 (7/16"-14 x 2-23/64") for big-blocks; don't use a substitute unless it's made specifically for that application.
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'69 Z/28
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69z28302
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« Reply #3 on: December 14, 2009, 09:42:34 PM »

Thanks for the info once again JohnZ
Mike
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