Hank, It's a 4.125 x 4 (321cid) with 7.850" aluminum rods with 0.912 (Ford) wrist pins. I'm going to have a set of JE pistons made as soon as I get the #983 head modified and make a mold of the combustion chamber. I'm trying to keep as much weight out of the rod/pin/piston assembly as possible. I've filled the block with Hard Blok up to the bottom of the water pump hole so the bore won't move around. I'm building a new rocker arm/shaft assembly with aluminun roller rockers with a 1.8:1 ratio. The assembly will resemble the Jessel set-up. I have to call Mike Kirby and pick his brain about the cylinder head mods to see how much flow I can get out of this ugly head. I've been doing some research on intake and exhaust systems for this head. From my dyno experience, on several different engines, there is LOTS of power available in these systems
if their tuned correctly. The engine is going in a HAMB HA/GR dragster. Should be fun.