Manley Rotating Assembly, BBC 555 4.250 STROKE/4.560/+43cc

4340 Forged steel crankshaft4340 Forged steel H-Beam connecting rods with 7/16? ARP 8740 or optional ARP 2000 cap screws2618 Forged aluminum Platinum Series pistons with Premium Chrome Moly wrist pinsHorsepower range is 900 with the ARP 8740 and 1,500 with the optional ARP 2000 cap screws

The state of California has determined that certain chemicals used in the manufacture of this product have been known to cause cancer and birth defects.

For more information visit: www.P65Warnings.ca.gov