CRANKSHAFTS
Chevrolet Small Block (Cont.) Forged Steel Crankshafts - Cont. 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 & cham- fered oil holes, precision ground and micro-polished. Lightweight - Same as
standard, reduced rotating weight weight design with aero-wing counterweights. Superlight - Same as standard but pounds lighter design with aero-wing pendulum undercut counterweights, bridged rod journals. F-43 Lightweight - Same as stan- dard, add gun-drilled main line, aero-wing counterweights, exclusive pendulum undercut CWT's.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke 3.250" 3.480" 3.480" 3.480" 3.480" 3.480" 3.480" 3.480" 3.500" 3.500" 3.500" 3.500" 3.562" 3.750" 3.750" 3.750" 3.750" 3.750" 3.750" 3.750" 3.750" 3.875" 3.875" 3.875" 3.875" 4.000" 4.000" 4.000"
Main
SCA4-350-3250-5700
Standard Weight
5.700" 2.100" 350 5.700" 1.888" 350 5.700" 2.000" 350 5.700" 2.000" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 1.888" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 2.000" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 2.100" 350 5.700" 2.100" 400 6.000" 2.100" 400 6.000" 2.100" 400 6.000" 2.100" 400 6.000" 2.100" 350 6.000" 2.100" 350 6.000" 2.100" 400 6.000" 2.100" 400 5.700" 2.100" 350 6.000" 2.100" 350 6.000" 2.100" 400
2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 1-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc.
Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int.
1850 1750 1750 1850 (A) 1750 1750 1850 1750 1850 1850 1850 1850 (A) (A) (A)
50
SCA4-350-3480-5700-18LW F-43 Lightweight
40-42 40-42 40-42 52-55 48-51 40-42 40-42 52-55 48-51 40-42 52-55 44
SCA4-350-3480-5700-3-2
Superlight
SCA4-350-3480-5700-20LW F-43 Lightweight
SCA4-350-3480-5700 SCA4-350-3480-5700-2 SCA4-350-3480-5700-3
Standard Weight
Lightweight Superlight
SCA4-350-3480-5700-21LW F-43 Lightweight SCA4-350-3500-5700-18LW F-43 Lightweight
SCA4-350-3500-5700 SCA4-350-3500-5700-2
Standard Weight
Lightweight
SCA4-350-3500-5700-21LW F-43 Lightweight
SCA4-350-3562-5700-3-20 SCA4-350-3750-5700 SCA4-350-3750-5700-L SCA4-350-3750-6000 SCA4-350-3750-6000-2 SCA4-350-3750-6000-3 SCA4-400-3750-5700 SCA4-400-3750-6000 SCA4-400-3750-6000-3 SCA4-400-3800-6000-2 SCA4-350-3875-6000 SCA4-350-3875-6000-2 SCA4-400-3875-6000 SCA4-400-3875-6000-2 SCA4-350-4000-6000
Superlight
Standard Weight Standard Weight Standard Weight
52 52 52 44 52 52 44
Lightweight Superlight
(A) (A)
48-51
Standard Weight Standard Weight
1850 1850
Superlight
(A) (A)
Scat Pro Series 3.800"
48-51 52-55 52-55 52-55 52-55 40-42 40-42 54
Standard Weight
1850
Lightweight
(A)
Standard Weight
1850
Lightweight
(A)
Standard Weight
1850 1750 1750
SCA4-350-4000-6000-21LW F-43 Lightweight SCA4-400-4000-6000-21LW F-43 Lightweight
Note: (A) Scat rough balanced to around 1850 +/-. Professional machine shop balancing required to desired bobweight.
Chevrolet LS Based Gen III/IV 4.8L/5.3L/5.7L/6.0L/6.2L/7.0L Forged Steel Crankshafts Callies Compstar LSx Features: Spec 4340 material, mid-weight design, multi heat-treated, double stress relieved, nitride hard- ened, properly placed counterweights profiled for piston clearance, drilled rod journals, precision ground and mirco-polished to 5Ra. Dragonslayer LSx Features: Spec 4340 material, mid-weight design, multi heat-treated, double stress relieved, nitride hardened, properly prepped counterweights, gun-drilled mains, lightened rod journals, dual linear post keyways, pre- cision ground and mirco-polished to 5Ra.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke
Main
LS1 Compstar, 24-Tooth Reluctor LS1 DragonSlayer, 24-Tooth Reluctor
CALAPO31N-CS24
4.000"
6.100" 2.100" 2.559"
1-Pc.
Int.
1785
55
CALAPO31T-DS
4.000"
6.100" 2.100" 2.559"
1-Pc.
Int.
1785
48
2018 ENGINE BUILDER CATALOG
15
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