I turn my W-2 to 8200... same with my W-9 but have
had it as high as 9600.. just drilled all the oil holes
larger ported the pump on the W-2.. my W-9 is a R3
block with a dry sump.... all my rockers are T&D
EDIT
Both of these have a 3.79 crank... W-2 is 395ci and
the W-9 is 405ci