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Mod | | | Forums66 Topics128,040 Posts1,055,475 Members48,424 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jan 2000 Posts: 1,586 Extreme Gabster | | Extreme Gabster Joined: Jan 2000 Posts: 1,586 | Yes, there was discussion in the past about a special grooved bolt but actually it doesn't exist.The oil intended for the rockers passes from a drillway in the block to the head above the threaded hole in the block. The oil doesn't pass by the bolt threads at all.All the head bolts have the same reduced shank area.Chevy had a special bolt restricting the upper end oil on some later engines.
Brian, clean up the bolt and post a picture here. | | |
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