Eagle Forged Crankshaft - 4.250 in Stroke - Internal Balance - 2-Piece Seal - Big Block Chevy SR42603A-SFI 1960-1983 Ford F-100

1960-1983 Ford F-100

1990-1991 Pontiac 6000

094 in Thick

Match with a variety of manifolds that include Edelbrock Performer

- until all 6 are on

Eagle Forged Crankshaft - 4.250 in Stroke - Internal Balance - 2-Piece Seal - Big Block Chevy SR42603A-SFI 1960-1983 Ford F-100Eagle forged 4340 steel cranks feature a non twist forging, . 125" fillet radiuses for superior strength so chamfered narrowed bearings required, nitrided surface, &amp micropolished to &lt 2 ra. Intended for the most demanding applicationForged AISI ASME certified 4340 steel with multi stage heat treatment for superior strength Service: Eagle connecting rods and cranks are designed and manufactured to our specifications. Some simply purchase generic