Most likely it’s clogged where the supply line goes into the block, a common problem. It’s the line closer to the firewall. I would disconnect that line from the fitting and the filter, then blow thru the line. Then I would use a drill bit (by hand) to try to clean out the port that goes into the block.

Last edited by Phak1; 06/11/2025 3:55 PM.

Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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