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Global Mod,
Mod | | | Forums66 Topics128,066 Posts1,055,871 Members48,428 | | 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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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Oct 2013 Posts: 367 Shop Shark | | Shop Shark Joined: Oct 2013 Posts: 367 | On a later (60/61) 235, if I want to run a line from the oil gallery (the back of the black where the oil pressure gauge connects) to the hole in the middle of the engine right below the valve cover (a common mod I've heard to assure good oil to the top no matter what), what T fitting do I need to get?
Anyone familiar with this mod who can tell me more? | | | | | Joined: Feb 2001 Posts: 1,094 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,094 | A compression fitting for the size oil line you have. I don't remember if it's 3/16 or 1/8 inch.
Tommy 59 apache 1/2t 261 short stepside | | | | | Joined: Oct 2013 Posts: 367 Shop Shark | | Shop Shark Joined: Oct 2013 Posts: 367 | And I have no oil lines so I don't know what size it should be.  | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | On a later (60/61) 235, . . . . Anyone familiar with this mod who can tell me more? I am familiar with this "mod"/cob, and the the parts that are usually needed are shown here.You could take your oil-pressure fitting from the block and your pipe-plug-fitting from the head to NAPA/etc and see if they can match up the needed fittings with the length of 1/8" line that you would need. If you do not mind my asking, why do you need this? If you are not getting oil to the rocker arms, have you checked/cleaned the rocker arm assembly, to make sure it is not plugged up? | | | | | Joined: Oct 2013 Posts: 367 Shop Shark | | Shop Shark Joined: Oct 2013 Posts: 367 | I'm asking because I keep hearing about it and seeing it in pics and have been told by more than a few people now that it's a useful mod for keeping the top well oiled under all conditions. That might not be true but I really wanted to know.  | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Run your engine with the valve cover off. If oil is coming out any part of the rocker arm assembly, you are getting enough oil. If oil is not coming out at each rocker arm, you might want to clean out the rocker arm assembly.
That "adaptation" is a sign/"solution" of an oil flow/circulation problem. There is no need for that line if oil is reaching the rocker arms.
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