Manley Rotating Assembly, BBC 555 4.250 STROKE/4.560/-3cc

Starting with a 4340 forged steel crankshaft is key for any serious BBC build. This Manley rotating assembly uses that strong foundation to create a 555 cubic inch powerhouse, featuring a 4.250-inch stroke and designed for a 4.560-inch bore with -3cc piston dish volume. This combination is built to handle significant power, rated for up to 900 horsepower with the standard ARP 8740 cap screws on the connecting rods, and an impressive 1,500 horsepower when you opt for the ARP 2000 series cap screws.

The H-beam connecting rods are also forged from 4340 steel, ensuring they can withstand the immense forces generated in a high-performance big block Chevrolet engine. Paired with these are Manley's Platinum Series pistons, made from 2618 forged aluminum for a good balance of strength and light weight, and they come complete with premium chrome moly wrist pins. This assembly is a well-built package designed for builders looking to push the limits of their BBC engine.

When assembling this rotating mass, pay close attention to balancing requirements to ensure smooth operation and longevity. Remember that this assembly is not CARB approved and cannot be shipped to California. Always consult the manufacturer's detailed installation and balancing instructions before beginning your build.