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Lunati Pro Blower Series Crankshafts 80440002

Lunati 80440002 - Lunati Pro Blower Series Crankshafts

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Crankshaft, Pro Blower, Forged 4340 Steel, External Balance, 4.000 in. Stroke, 2-Piece Rear Seal, Chevy, Each

Estimated Ship Date: 1/12/2015 (if ordered today)

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Brand: Lunati

Manufacturer's Part Number: 80440002

Part Type: Crankshafts

Product Line: Lunati Pro Blower Series Crankshafts

Summit Racing Part Number: LUN-80440002

Rear Main Seal Style: 2-piece

Engine Stroke (in): 4.000 in.

Crankshaft Material: Forged 4340 steel

Engine Balance: External

Lightened: Yes

Requires Narrow Bearings: Yes

Rod Bearings Included: No

Main Bearings Included: No

Rod Journal Diameter (in): 2.200 in.

Main Journal Diameter (in): 2.749 in.

Balancer Bolt Thread Size: 3/4-16 in.

Crankshaft Snout Style: Standard

Quantity: Sold individually.

Notes: Crankshaft features dual keyways for supercharger applications.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Tool Stroker Combinations

These Lunati Pro Blower series crankshafts are designed to withstand the extreme pressures encountered when using a roots-type supercharger, commonly referred to as a blower. They feature dual keyways, .140 in. radii on the rods and mains, a 3/4-16 in. threaded snout hole, a dual drilled flange, and 7/8 in. lightening holes in the 2, 3, and 4 rod journals. The number 1 journals are not drilled, to provide extra strength on the front of the crankshafts. The crankshafts require the use of chamfered rod and main bearings, which are sold separately.


Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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