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Summit Racing™ Forged Crankshafts
Chevy LS 4340 Forged Steel Crankshaft, 4.000 stroke, 24X Reluctor, Lightened, Nitride Hardened, Narrowed Rod Bearings Req.
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Estimated Ship Date: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
SUM-180LS400024
Part Type:
Product Line:
Summit Racing Part Number:
SUM-180LS400024
UPC:
190861268814
Engine Stroke (in.):
4.000 in.
Crankshaft Material:
Forged 4340 steel
Engine Balance:
Internal
Rear Main Seal Style:
1-piece
Reluctor Wheel Tooth Quantity:
24
Lightened:
No
Requires Narrow Bearings:
Yes
Rod Bearings Included:
No
Main Bearings Included:
No
Rod Journal Diameter (in.):
2.100
Main Journal Diameter (in.):
2.559 in.
Balancer Bolt Thread Size:
M16 x 2.0
Crankshaft Snout Style:
Standard
Weight:
50.000 lbs.
Quantity:
Sold individually.
Notes:
Dual 3/16 in. keyway. Woodruff key not included.
Summit Racing™ Forged Crankshafts
Summit Racing™ forged crankshafts offer maximum strength and the best value for your dollar! Our crankshafts are non-twist forged from certified 4340 steel. They are put through several stages of heat-treatment, and then stress-relieved and shot-peened to provide the strength and reliability you demand for your high performance application. Each journal is micro-polished and a .125 in. radius is used for increased strength. Summit Racing™ forged crankshafts help you get the most in value and performance.
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Some parts are not legal for use in California or other states with similar laws / regulations
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