RevOD,,,
The cylinder heads are the same.


You can turn the crankshaft & put the piston @ BDC Botton dead center, (bottom of the bore)

Place a tape measure/ruler, down the bore to the top of the piston.

Look @ the top of the block where your ruler/tape measure is @ see what the measurement is.

3.53"= 250
3.31?"=230 off the top of my head???

So basically if you see your measurement is just over 3.5" then it would be a 250.

MBHD

12 port SDS EFI