TOP END; CAST FORGING C1117; 8 HOLES 0.781 IN. DIA SPACED ON 6.562 IN. DIA BOLT CIRCLE; TWO DOWEL PIN HOLES DRILLED 1.250 IN. DEEP SPACED APART 3.250 IN. C TO C; 2.188 IN. HEIGHT OF HEAD; 0.375 IN. DIA WIDTH OF GROOVE IN HEAD; 3.250 IN. DIA OF BORE; 4.125 IN. FROM CENTER OF HEAD TO SQUARED END