My 55c600 has a z in the vin no. meaning its a 256 but how do I know if its the original motor. It still is a 6volt set up, but how can I tell what size the motor is. HELP ME PLEASE!!!!!!

 

There are letters on the block, heads, intake and timing chain cover.
What are those. My 239 has EBV.
Here is a link with some information. TECHNICAL
and Here for the heads: Y
It looks like EBY looks to be 256 but I got a little confused reading those.

Hey let me look at my parts catalog.....if someone else doesn't have a good answer yet.

 

Thanks Joe i'm going to look for the letters on the block. I looked at the links you gave me and that should help me solve my problem. Once again thank you!