Callies BB Chevy 4340 Forged Magnum Crank - 4.375 Stroke 4386SMLBK and performance to match advancements

and performance to match advancements in automotive technology

AN-12 to (2) AN-12

and off-road applications

1984-1995 GMC G3500

R20 1988-1987

Callies BB Chevy 4340 Forged Magnum Crank - 4.375 Stroke 4386SMLBK and performance to match advancementsProduct Description: Crankshaft Magnum 4. 375 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