Poulan 2800, 3000, 3300?

[LogSawyer74]

I've acquired a couple Poulan project saws recently. How do I determine if the saws are 2800, 3000, 3300 etc. All those models look the same. These are missing the side cover or anything that has a model number on it. thanks

 

[RedneckChainsawRepair]

Measure bore all 3 different. 2800 46cc, 3300 54cc are bare bore cylinders and 3000 49cc is chrome bore with thin rings.