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Lunati BB421KN

4.375-2.750-2.200RL6.535 NO BL

Lunati BB421KN

638-BB421KN

made in usa
jegs shipping
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Estimated ship date 10/03/17 if Ordered Today
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Lunati BB421KN 4.375-2.750-2.200RL6.535 NO BL $1,916.99
4.375-2.750-2.200RL6.535 NO BL

Lunati BB421KN Details

Pro Series™; Crankshaft; Stroke 4.375 in.; Main Dia. 2.750 in.; Pin Dia. 2.2 in.; Rod Length 6.535 in.; Chevrolet Big Block V8;

Specifications:

Engine Balance
Internal
Rear Main Seal Style
2-piece
Balancer Bolt Thread Size (in.)
1/2-20
Crankshaft Material
Forged 4340 steel
Crankshaft Snout Style
Standard
Engine Stroke (in.)
4.375
Lightened
Yes
Main Bearings Included
No
Main Journal Diameter (in.)
2.749
Quantity
Sold individually
Requires Narrow Bearings
Yes
Rod Bearings Included
No
Rod Journal Diameter (in.)
2.2
Manufacturer's Part Number:
BB421KN
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