they just got better now come with a probe piston! they are a 2618 material not a 4032 so they will take alittle more nitrous if needed !!!
Above Added: Mon December 5, 2011, 11:42 am EST
these short blocks will be on sale until 6/10/10 all orders must be place before 6/10. for $3000.00 mahle pistons maybe swiched to srp pistons at our discrection thanks Bobb Jacobs
Above Added: Tue May 25, 2010, 1:03 am EST
all of our gm motors now come with callies compstar rods and crankshafts!
Above Added: Fri July 10, 2009, 3:49 pm EST
there will be a increase on this short block at the end of oct. so place your order now to beat it sorry its out of our control! government you know .
Above Added: Mon September 1, 2008, 12:23 pm EST
brand new 4340 383 short blocks we start with a brand new gm 4 bolt main block w/2pc rear main seal a new 4340 steel crankshaft 4340 h beam rods mahle coated pistons w/ metric rings clevite h series bearings we machine the block on the newest cnc machineing center .paralle deck & bore then torque plate hone on our new rottler hp6a hone cabnet w/diamond stones & finish with race brushes and balance on new cwt pro 5000 balancer to prostock specs. int. and professionally assembled thanks for viewing bobb jacobs call with any questions 614 449 5761 price3000