Get ready to boost your engine performance with the BBC Rotating Assembly Kit - Competition by EAGLE. This formidable 489 CID kit features a forged crank, forged pistons, and H beam rods for unparalleled power. With a stroke of 4.250 inches and a bore of...

Rotating Assembly - 540 CID - Forged Crank - Forged Pistons - 4.250 in Stroke - 4.500 in Bore - 6.800 in H Beam Rods - Big Block Chevy - Kit

Rotating Assembly - 496 CID - Cast Crank - Forged Pistons - 4.250 in Stroke - 4.310 in Bore - 6.385 in I Beam Rods - Big Block Chevy - Kit

Rotating Assembly - 501 CID - Cast Crank - Forged Pistons - 4.140 in Stroke - 4.390 in Bore - 6.800 in I Beam Rods - Big Block Ford - Kit

Rotating Assembly - Street / Strip - 545 CID - Forged Crank - Forged Pistons - 4.500 in Stroke - 4.390 in Bore - 6.700 in H Beam Rods - Big Block Ford - Kit

Main Cap - 4-Bolt - Rear - Splayed Bolts - Ductile Iron - Big Block Ford - Kit