I had the exact same condition on my truck just before I started bodywork two years ago. My plan is to change the thermostat first, because it could be hanging up. Much easier and cheaper and it may just solve the issue.

Last edited by Phak1; 08/17/2025 12:04 PM. Reason: Typo
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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