235 engine serial number?

[JumboAMONGus]

My engine code stamped says 0i075 96 F56Y i was told its is the original 235 for my 3100 truck , the truck was a military truck , side casted number is 3837004 also has the 848 head 3836848 but i searched a few engine code sites and come up with a 235 powerglide motor 140hp , i know my truck was not a power glide , anyone can help and most numbers dont have 0i0 usually 010 and i double checked make sure its a capitol i not a 1 any help thank you bottom says con4 L195 GM3