If you are talking about a Chevrolet 216, the original pistons did not have a front and back. After market aluminum pistons sometimes had a slot in one of the thrust faces and it was intended to go on a specific side. Somewhere around 1954, 235s had an offset wristpin and those pistons were definitely made to go in one way only.


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!