643 HP at the wheels, then......

over it now....gotta think about rebuild.
last time round I was misinformed about block fill and machining was already done.
360 blocks thin on the ground round here.

would it be practical to do a half block fill with my existing block and bore to .060". already .040". it's a 77 casting. performer rpm heads this time round. existing heads are ported smoggers.

the rod bearings showed signs of det on a few rods.