Eagle Chevy 409 4340 Forged Crank - 4.000 Stroke RS003C0410 100% bolt-in design

100% bolt-in design

Ferro Spiral Core Developed For Performance Use

each component is CNC-machined for precision fit and unmatched flow

From the development of our first fender flares for the Ford Bronco

this raised one-piece guide plate set is designed for Chevrolet 396-454 Big Block engines with 7/16" studs and 3/8" pushrods

Eagle Chevy 409 4340 Forged Crank - 4.000 Stroke RS003C0410 100% bolt-in designEagle 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