[AT] Case SC

[JKW]

I have what i beleive to be an original N.O.S piston for a Case SC tractor. 
It measures 3.50" Across and 3.75 tall. I also have the sleeve for it. There 
was one engine made that had a larger bore than this. The Larger engine, 
used in 1953 (S/N 8027115) had a larger bore but all the others used a 3.50 
bore. Im wondering if any one has the specs on the pistons? Wrist pin is 
1.25. Hope someone can help. Thanks jkwidener