Jerry, I can’t actually say. They came with the truck and were new when the PO had the engine rebuilt by a shoddy machine shop. I have the receipts from the PO. He had nothing but problems after he had the engine rebuilt. The odometer says 00150 and I believe the PO put it in, so I don’t believe there are many miles on the lifters. Today it took almost 15 minutes before they quieted down today.
I did the tech tip on the push rods last year and it didn’t help.
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 Project Journals Stovebolt Gallery Forum