383 motors just got even better we still use callies rods and crankshaft but now use probe pistons thet are a 2618 material will hold alittle more nitrous or just last longer !!!!
Above Added: Mon December 5, 2011, 11:39 am EST
on sale until 6/10/10 must have orders in bye 6/10 thanks bobb jacobs
Above Added: Tue May 25, 2010, 1:29 am EST
all of our gm short blocks now come with callies compstar crankshafts
Above Added: Fri July 10, 2009, 3:38 pm EST
hurry up and beat the increase! it will happen at end of dec.
Above Added: Mon December 8, 2008, 7:29 pm EST
we use a brand new gm 4 bolt block 2 pc. rear main seal 4340 steel crank 4340 h beam rods with srp pistons file fit rings block paralelle decked torque plate honed finished with race brush.balanced on cwt pro 5000 to .20oz.assembled and painted you will get a balance sheet with your name and engine size. thanks for viewing Bobb jacobs.