283 versus 310, how to tell the difference

Well> A lot of the same blocks were used for both 283 & 310 engine. However some blocks were specific just to one or the other. So start with a block casting number and an engine serial number plus the date the block was cast.
 
So how would tell a 283 ci gas engine in a 1755 versus a 310 ci engine in a 1855? Have you seen many 1855 gasses for sale, I know you said before when you worked at a dealer you sold 3 1855 gasses new.
 
Take a spark plug out and use a piece of wire to determine the stroke. The 283 has a different stroke than the 310.
 

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