Dart block 4.130 bore,3.360 stroke,18 deg dart heads,jesel 1.95/1.85 shaft rockers,crower cam,je pistons,crower rods,crower crank,titanium valves. 400 laps since 2nd refresh done by clements,have spec sheet,pics on racing junk. 8500.00 call or text benji 864-993-0599.