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Help, I need to find someone that can tell me the intake and exhaust valve sizes that are installed in the following heads.
casting # 3931063 closed chamber date code D11-9
casting # 3964290 closed chamber date code H20-9
The heads are virgin rebuildable as removed oval port. Are there any differences between these heads except for cast #'s and dates?????
how do i tell what sizes my heads are?Quote:
Originally posted by CHUBBY2
Help, I need to find someone that can tell me the intake and exhaust valve sizes that are installed in the following heads.
casting # 3931063 closed chamber date code D11-9
casting # 3964290 closed chamber date code H20-9
The heads are virgin rebuildable as removed oval port. Are there any differences between these heads except for cast #'s and dates?????
both # are same applacation. 396/402, 325/350 hp, 100.9cc, 206 intake/172 ex.