Here's what a late 261 looks like, 1/2 " oil holes etc, if doesn't have the holes it's a 235.
Attachments
261pressure Plug.jpg (50.36 KB, 95 downloads)

Last edited by JiMerit Boltr#43; 06/24/2021 2:54 PM.

It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed