CRANKSHAFTS
Chevrolet Big Block (Cont.) Forged Steel Crankshafts - Cont. Lunati Signature Features: Premium 4340 non-twist forged steel, heat- treated, stress-relieved, properly placed profiled counterweights, nitride hardened, lightening holes in throws, gun-drilled mains, .125" radii for use with narrowed bearings, magnafluxed, precision ground and mirco-polished.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke
Main
Signature Series, Center Counterweights Signature Series, Center Counterweights
LNT60442502
4.250"
6.385" 2.200" 2.750"
2-Pc.
Int.
N/A
N/A
LNT60445002
4.500"
6.535" 2.200" 2.750"
2-Pc.
Int.
N/A
N/A
Scat 4340 Pro Series Standard Weight Features:- 4340 forged steel, heat-treated, nitride hardened, large fillet radii on all journals, lightening holes rod journals, straight shot & chamfered oil holes, precision ground and micro-pol- ished. Lightweight Features: - Same as standard, reduced rotating weight weight design with aero-wing counterweights. Recommended for use up to 1500 HP.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke
Main
Standard Weight, Early Style Standard Weight, Late Style Standard Weight, Early Style Standard Weight, Early Style Lightweight, Early Style
SCA4-454-4000-6135
4.000"
6.135" 2.200" 2.750"
2-Pc.
Ext.
2350
70
SCA4-454-4000-6135-L
4.000"
6.135" 2.200" 2.750"
1-Pc.
Ext.
2350
70
SCA4-454-4250-6135
4.250"
6.135" 2.200" 2.750"
2-Pc.
Ext.
2350
70
SCA4-454-4250-6385
4.250"
6.385" 2.200" 2.750"
2-Pc.
Ext.
2350
70
SCA4-454-4250-6385-2
4.250"
6.385" 2.200" 2.750"
2-Pc.
Ext.
2350
65
Chevrolet Diesel Duramax 6.6L 4340 Forged Steel Crankshaft Callies
Compstar Diesel Features: Spec 4340 material, multi heat-treated, double stress relieved, deep nitride hardened, large radii in all journals, keyed shear proof timing gear fit, drilled rod journals, dual keyed damper fit, accepts OEM post and flange bolts, accepts OEM flywheels/flexplates, machined flow, main bearing oil holes with lead-ins for enhanced cold start oil, precision ground and mirco-polished to 6 Ra. Conservatively rated for 800 HP & 800 ft./lb. torque.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke 3.898"
Main
CALD333M81-CS
Duramax
6.418" 2.480" OEM OEM Ext.
(A)
84
(A) No specific bobweight listed due to many rod lengths depending on application. Can be balanced front or rear.
Chrysler-Mopar Small Block 318-360 A-Engine Cast Steel Crankshafts Eagle “ESP” Features: . 092" radius on rod and main journals, rear seal and snout, compatibility with standard OEM style bearings.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke 3.310" 3.580" 4.000"
Main
EAG103403310 EAG103603580 EAG103604000
340 Replacement 360 Replacement 360 Standard Weight
6.123" 2.125" 2.500" 6.123" 2.125" 2.810" 6.123" 2.125" 2.810"
2-Pc. 2-Pc. 2-Pc.
Int. Int. Int.
2050 2050 2050
54 54 54
2018 ENGINE BUILDER CATALOG
18
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