These pistons L2248 came from block casting number 3789935 dated 2 C9. Believe the block is a 283ci maybe 1962 month of March / 9th day... Just can't pick up the L2248 numbers from my catalogues... They are forged units with about a 1/2" dome..
Also tried Google and still nothing a showin' up... Rods have been balanced by ball milling into the big ends of the caps... Was this how it was balanced "back in the day" and is it safe to run 'em like this??? Thanks Dutch and Tinkerr for getting back!! Ted
L2248 and L2249 left and right or (vise versa) (pin offset), for a 315HP 283 @ 11.5 to 1 compression of the early 60's. and I need a .060 over one to put a motor back together !! If they are the 283 rods DO NOT USE THEM. If they are small journal 327 rods then it's OK.