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Mod | | | Forums66 Topics128,154 Posts1,056,856 Members48,456 | | 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!
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| | | | Joined: Mar 2008 Posts: 54 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2008 Posts: 54 | I am re-powering my '51 Chevy 3/4T from a 235 to a 261. I plan to use a 261 block and a 235 848 head to gain compression. Since the rocker arm assembly from the 261 is in the best condition, I am planning to use it for the build. I notice that the two end rocker shaft supports from the 261 have a slot milled into the side where the shaft goes through, which I suppose is so the shaft is held securely. Is this correct? What is puzzling is that the 235 rocker shaft supports are all solid with no slot. Does anyone know why they are different? Are both supposed to have the slot and maybe the PO installed the wrong end supports? Any help would be appreciated. Rocker Shaft Support with slot | | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 |
Joe,
Hope that someone with experience/knowledge checks in on this one. I have never seen one if those posts with a slot as shown in your photo.
Tim
| | | | | Joined: Apr 2006 Posts: 506 Shop Shark | | Shop Shark Joined: Apr 2006 Posts: 506 | Joe,
Are there any numbers on the supports?
-Tom
1950 Chevy 3100 w/ 1956 235
| | | | | Joined: Mar 2008 Posts: 54 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2008 Posts: 54 | Tom
Yes, there is a casting number of 3836114, but it is on both the slotted and non-slotted supports.
Joe | | |
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