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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 2006 Posts: 21 'Bolter | | 'Bolter Joined: Mar 2006 Posts: 21 | 'nother newby question. On my 235 motor, theoretically from a 57 belair donor, the return line from the filter canister bolted on the intake is routed around the motor and connected to a fitting in the side of the head on the passenger side. The feed line is coming from a T low on the drivers side. I've seen a few pictures of motors with the same connection but I've also seen return lines routed to a passage not far from the feed port. What gives ? Can I move my return line to the drivers side for a cleaner look ? | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | That spot on the head was an access point that Chevrolet used to drill a horizontal passage to supply oil to the rocker shafts. It was plugged with a 1/8” pipe plug originally.
If there has been some passage way that has become plugged in the block or before that horizontal path, it was common to run an external line to that spot.
You can try to relocate the return line and see if you still get oil to the rocker.
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