Originally Posted by Chris 46 / 525
If you have hyd. lifters and they have a small oil passage in the top center, grind a small groove in the bottom of the push rods to allow the oil to pass through the lifters.
There is a tutorial on this process, written by one our our fellow ‘bolters “Pre 68 Dave”. Here is a link to that article. http://chev235guy.blogspot.com/search/label/Hydraulic%20Lifter%20Noise

Last edited by Phak1; 08/27/2023 11:46 AM.

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