Eagle "ESP" Forged 4340 Steel Crankshaft - SB Chevy 350, 2 Piece Rear Seal - 3.480" Stroke, 5.700" Rod Length, 2.100" Rod Journal FR Underwear Bra AFR's spread port head has

AFR's spread port head has all the benefits and features of AFR's standard head

but is the ultimate choice for soft

spec engines

cruise control

Eagle "ESP" Forged 4340 Steel Crankshaft - SB Chevy 350, 2 Piece Rear Seal - 3.480" Stroke, 5.700" Rod Length, 2.100" Rod Journal FR Underwear Bra AFR's spread port head hasEagle 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