If you have a 1961 engine, it will have hydraulic lifters, I would think and you do not adjust them with feeler gauges. If you have solid lifters, you adjust with feeler gauges but not with the engine running.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!