Eagle "ESP" Forged 4340 Steel Crankshaft - SB Chevy 400, 400 Main Journals (No Spacer Bearings Required) - 3.750" Stroke, 5.700" Rod Length, 2.100" Rod Journal NPT Quick-Connect Fittings 1980-1987 Pontiac Bonneville

1980-1987 Pontiac Bonneville

Naturally Aspirated Supports up to 3

the 13129 EFI Bypass Regulator can handle high-flow EFI fuel pumps and the most aggressive street machines

1959-1959 Studebaker 4E12

works well with 5 speed

Eagle "ESP" Forged 4340 Steel Crankshaft - SB Chevy 400, 400 Main Journals (No Spacer Bearings Required) - 3.750" Stroke, 5.700" Rod Length, 2.100" Rod Journal NPT Quick-Connect Fittings 1980-1987 Pontiac BonnevilleEagle 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