part # for head bolts for 67 400ci
Thread Starter
Registered User
Joined: Mar 2009
Posts: 215
From: Virginia Beach, VA
part # for head bolts for 67 400ci
The ARP bolt (180-3600) DOES fit.
wrong size bolts in box sent by catalog supplier.
Edited post so no one got wrong info on the #.
wrong size bolts in box sent by catalog supplier.
Edited post so no one got wrong info on the #.
Last edited by Flye; Sep 2, 2009 at 04:35 PM. Reason: changed to remove the incorrect info on bolt size.
Old(s) Fart
Joined: Mar 2007
Posts: 50,799
From: Northern VA
All 64-76 Olds motors use 7/16" head bolts. ARP kit 180-3600 is the correct P/N for a 67 400 motor. Have you tried starting the bolts in the block without the heads in place?
Thread Starter
Registered User
Joined: Mar 2009
Posts: 215
From: Virginia Beach, VA
Thanks Joe:
MYSTERY SOLVED....
I went to hardware store and measured the bolts. Correct Box and part number. Box says 7/16". The bolts inside are actually 1/2" coarse.
I measured my own head bolts, they are 7/16" coarse.
Well, I'll ship them back to Summit and more lost time...
DSC06946.jpg
MYSTERY SOLVED....
I went to hardware store and measured the bolts. Correct Box and part number. Box says 7/16". The bolts inside are actually 1/2" coarse.
I measured my own head bolts, they are 7/16" coarse.
Well, I'll ship them back to Summit and more lost time...
DSC06946.jpg
Last edited by Flye; Sep 2, 2009 at 04:29 PM. Reason: adding info about bolt size check
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