| |
Click on image for the lowdown. 
====
| | |
7 members (RdsLessTaken, TUTS 59, Jay R, Otto Skorzeny, 68ironhead, Phak1, 1 invisible),
99
guests, and
3
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,136 Posts1,056,430 Members48,441 | | 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!
| | 
#76765 04/25/2007 3:22 AM | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | Dave,
What a trophy. This allows lube to reach the center oiler, but whats with the hole. I thought it was merely the reduced shank that did the trick. Does the slotted head ID this as the 'special one'?
Stuart | | |
#76766 04/25/2007 3:56 AM | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | The slot is just to identify it as special.
From 1938-62, only two head bolt part numbers are listed for 216, 235 and 261. Long and short except for a special drilled bolt, used when a 59-62 block is used with earlier top end* to reduce the oil flow to the rockers.
Note in parts book: Use with drilled bolt.
Plug # 3764579
Install in block oil port near right center head bolt.
(This plug blocks the original oil path and sends it through the drilled head bolt)
· The cylinder head did not change but the rockers did.
See the USA in your vintage Chevrolet! My Blog | | |
|
|
| |
