It is hard to imagine an engine running with that kind of clearance. I would have thought it would self destruct. Anyway, with original cast iron pistons, a feeler gauge of .002" would give some drag and a .003" feeler would lock it up.


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!