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LS SERIES CRANKSHAFTS
BC performance crankshafts are CNC milled from 4340 non-twist forgings in a stroke range of 4.000", 4.125" and 4.250". Counterweight O.D. is designed for 6.100" to 6.125" length rod, approx. 1875g bobweight. Fully CNC'd on 5-axis machining centers, including oil holes for the best oiling possible. Includes 2 keyways on the snout (OEM is 1 keyway) for added keyway support in heavy duty applications, gun-drilled down the center to lighten it up without compromising strength. |
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Part # |
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Description # |
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Stroke |
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Crank Pin |
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Main |
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Buy Now |
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Status |
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| BC5456U |
CRANKSHAFT - Chevrolet LS Series, 4.000" Stroke w/58 Tooth Reluctor Wheel, 4340 Forged, Unbalanced |
4.000" |
2.0987" |
2.558" |
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In-Stock |
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| BC5457 |
CRANKSHAFT - Chevrolet LS Series, 4.100" Stroke w/58 Tooth Reluctor Wheel, 4340 Forged, Fully Balanced |
4.100" |
2.0987" |
2.558" |
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In-Stock |
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| BC5457U |
CRANKSHAFT - Chevrolet LS Series, 4.100" Stroke w/58 Tooth Reluctor Wheel, 4340 Forged, Unbalanced |
4.100" |
2.0987" |
2.558" |
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In-Stock |
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| BC5458 |
CRANKSHAFT - Chevrolet LS Series, 4.125" Stroke w/58 Tooth Reluctor Wheel, 4340 Forged, Fully Balanced |
4.125" |
2.0987" |
2.558" |
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In-Stock |
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| BC5458U |
CRANKSHAFT - Chevrolet LS Series, 4.125" Stroke w/58 Tooth Reluctor Wheel, 4340 Forged, Unbalanced |
4.125" |
2.0987" |
2.558" |
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In-Stock |
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| BC5459 |
CRANKSHAFT - Chevrolet LS Series, 4.250" Stroke w/58 Tooth Reluctor Wheel, 4340 Forged, Fully Balanced |
4.250" |
2.0987" |
2.558" |
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In-Stock |
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| BC5459U |
CRANKSHAFT - Chevrolet LS Series, 4.250" Stroke w/58 Tooth Reluctor Wheel, 4340 Forged, Unbalanced |
4.250" |
2.0987" |
2.558" |
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In-Stock |
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619.749.9018 ph
619.749.9128 fx
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| Some products listed are not legal for sale or use on emission controlled motor vehicles, RPM ranges vary on application.Warranty Information Copyright © Brian Crower Inc. All rights reserved.. |
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WARNING: This product can expose you to chemicals,
including Chromium (hexavalent compounds), lead and lead
compounds, which are known to the State of California to
cause cancer, birth defects or other reproductive harm. For
more information, visit www.p65warnings.ca.gov |
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