Page 16 - 2018 Racecar Engineering Engine Parts and Accessories Catalog

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 Rod Rear Target Approx.
Part No. Description Stroke Length Pin Main Main Seal Balance Bobweight Grams Weight Lbs.
SCA4-350-3250-5700 Standard Weight 3.250" 5.700" 2.100" 350 2-Pc. Int. 1850 50
SCA4-350-3480-5700-18LW F-43 Lightweight 3.480" 5.700" 1.888" 350 2-Pc. Int. 1750 40-42
SCA4-350-3480-5700-3-2 Superlight 3.480" 5.700" 2.000" 350 2-Pc. Int. (A) 40-42
SCA4-350-3480-5700-20LW F-43 Lightweight 3.480" 5.700" 2.000" 350 2-Pc. Int. 1750 40-42
SCA4-350-3480-5700 Standard Weight 3.480" 5.700" 2.100" 350 2-Pc. Int. 1850 52-55
SCA4-350-3480-5700-2 Lightweight 3.480" 5.700" 2.100" 350 2-Pc. Int. (A) 48-51
SCA4-350-3480-5700-3 Superlight 3.480" 5.700" 2.100" 350 2-Pc. Int. (A) 44
SCA4-350-3480-5700-21LW F-43 Lightweight 3.480" 5.700" 2.100" 350 2-Pc. Int. 1750 40-42
SCA4-350-3500-5700-18LW F-43 Lightweight 3.500" 5.700" 1.888" 350 2-Pc. Int. 1750 40-42
SCA4-350-3500-5700 Standard Weight 3.500" 5.700" 2.100" 350 2-Pc. Int. 1850 52-55
SCA4-350-3500-5700-2 Lightweight 3.500" 5.700" 2.100" 350 2-Pc. Int. (A) 48-51
SCA4-350-3500-5700-21LW F-43 Lightweight 3.500" 5.700" 2.100" 350 2-Pc. Int. 1750 40-42
SCA4-350-3562-5700-3-20 Superlight 3.562" 5.700" 2.000" 350 2-Pc. Int. 1850 52-55
SCA4-350-3750-5700 Standard Weight 3.750" 5.700" 2.100" 350 2-Pc. Int. 1850 52
SCA4-350-3750-5700-L Standard Weight 3.750" 5.700" 2.100" 350 1-Pc. Int. 1850 52
SCA4-350-3750-6000 Standard Weight 3.750" 5.700" 2.100" 350 2-Pc. Int. 1850 52
SCA4-350-3750-6000-2 Lightweight 3.750" 5.700" 2.100" 350 2-Pc. Int. (A) 48-51
SCA4-350-3750-6000-3 Superlight 3.750" 5.700" 2.100" 350 2-Pc. Int. (A) 44
SCA4-400-3750-5700 Standard Weight 3.750" 5.700" 2.100" 400 2-Pc. Int. 1850 52
SCA4-400-3750-6000 Standard Weight 3.750" 6.000" 2.100" 400 2-Pc. Int. 1850 52
SCA4-400-3750-6000-3 Superlight 3.750" 6.000" 2.100" 400 2-Pc. Int. (A) 44
SCA4-400-3800-6000-2 Scat Pro Series 3.800" 6.000" 2.100" 400 2-Pc. Int. (A) 48-51
SCA4-350-3875-6000 Standard Weight 3.875" 6.000" 2.100" 350 2-Pc. Int. 1850 52-55
SCA4-350-3875-6000-2 Lightweight 3.875" 6.000" 2.100" 350 2-Pc. Int. (A) 52-55
SCA4-400-3875-6000 Standard Weight 3.875" 6.000" 2.100" 400 2-Pc. Int. 1850 52-55
SCA4-400-3875-6000-2 Lightweight 3.875" 6.000" 2.100" 400 2-Pc. Int. (A) 52-55
SCA4-350-4000-6000 Standard Weight 4.000" 5.700" 2.100" 350 2-Pc. Int. 1850 54
SCA4-350-4000-6000-21LW F-43 Lightweight 4.000" 6.000" 2.100" 350 2-Pc. Int. 1750 40-42
SCA4-400-4000-6000-21LW F-43 Lightweight 4.000" 6.000" 2.100" 400 2-Pc. Int. 1750 40-42
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 Rod Rear Target Approx.
Part No. Description Stroke Length Pin Main Main Seal Balance Bobweight Grams Weight Lbs.
LS1 Compstar,
CALAPO31N-CS24 4.000" 6.100" 2.100" 2.559" 1-Pc. Int. 1785 55
24-Tooth Reluctor
LS1 DragonSlayer,
CALAPO31T-DS 4.000" 6.100" 2.100" 2.559" 1-Pc. Int. 1785 48
24-Tooth Reluctor

2018 ENGINE BUILDER CATALOG 15