With no casting markings on the heads all you can do is have the intake ports cc'ed to find out their size. Same with the combustion chambers; have them checked for size.
Probably 60cc roughly, always CC to check and make sure though they could be from a bare configuration that was available for pro head porters they were 48cc in some cases.
Summit still sells the sportsman ll FYI
How do you identify a aftermarket cast iron angle plug 2.05 intake valve real small chamber and there no markings on the heads
With no casting markings on the heads all you can do is have the intake ports cc'ed to find out their size. Same with the combustion chambers; have them checked for size.
Probably 60cc roughly, always CC to check and make sure though they could be from a bare configuration that was available for pro head porters they were 48cc in some cases.
Awesome