Eagle BB Ford 4340 Forged Crank - 4.500 Stroke Coil-Over Take Up Spring Do not use with other

Do not use with other brands

Duration 221 / 226

Three 2-Barrel

1970-1970 GMC Jimmy

4:1 gear reduction starter has a 1

Eagle BB Ford 4340 Forged Crank - 4.500 Stroke Coil-Over Take Up Spring Do not use with otherEagle 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