Callies BB Chevy 4340 Forged Magnum Crank 4.000 Stroke RS003C0117W 570 exhaust valves these heads

570 exhaust valves these heads move massive amounts of air

Punch and Flare Tool

Post Anchors

Tach Signal Filter

Works with Forward or Reverse Shift Pattern

Callies BB Chevy 4340 Forged Magnum Crank 4.000 Stroke RS003C0117W 570 exhaust valves these headsProduct Description: Crankshaft Magnum 4. 000 in Stroke Internal Balance Forged Steel 2 Piece Seal Big Block Chevy Sold Individually Callies Performance Products began manufacturing high performance crankshafts in 1989. With many years of engineering and employee experience, Callies has grown to be the industry leader for innovative product design. Callies Performance Products takes pride in staying ahead of the competition with the latest high tech