O OLD DAWG 1/2 ton status Joined Jul 20, 2002 Posts 443 Reaction score 0 Location MONTROSE, COLORADO Jan 11, 2005 #1 Does anyone know what the intake and exhaust valve diameters for 781 series heads are?
thor 1/2 ton status Joined Aug 20, 2003 Posts 512 Reaction score 0 Location Wa Jan 12, 2005 #2 2.065 intake/1.72 exhaust... Most performance rebuilds switch to 2.19/1.88