My 340 bare block

yellow rose said

Work on the inlet side of the pump. That’s were the restriction is, and it’s the best bang for your buck.

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This is something certainly in consideration for some time now for me. Is there anything you could recommend for light gauge tubing for the oil pump pickup? I don't have the ability to bend steel tubing here not even light wall stuff. I've looked for 5/8" seamless tubing mandrel bends but I haven't found any . I'd be surprised at this point if they're out there.
Was going to do a mock-up in something like flexible Appliance gas line. or soft copper tubing. I don't think the soft copper tubing would be strong enough as the finalized pick up tube even with some support to withstand what might be going on in an engine crankcase or chassis, vibration, impact and such.