CRANKSHAFTS
Chevrolet Big Block (Cont.) Cast Steel Crankshafts - Cont. Scat Pro Stock Features: 9000 cast steel, precision-ground, micro-pol- ished, factory balanced, 5.700" or longer rod, WISSOTA Approved. Pro Comp Features: 9000 cast steel, precision ground, knife-edged counterweights, factory balanced, straight shot oil holes, micro-pol- ished, IMCA and Racersaver approved.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description Pro Stock Pro Comp Pro Comp
Stroke 4.000" 4.250" 4.250"
Main
SCA9-10454
6.135" 2.200" 2.749" 6.135" 2.200" 2.749" 6.385" 2.200" 2.749"
2-Pc. 2-Pc. 2-Pc.
Ext. Ext. Ext.
2440 2420 2420
65-67
SCA9-454-4250-6135 SCA9-454-4250-6385
67 67
Forged Steel Crankshafts Callies
Compstar Features: Spec 4340 material, mid-weight design, multi heat- treated, double stress relieved, nitride hardened, properly placed coun- terweights profiled for piston clearance, drilled rod journals, precision
ground and mirco-polished to 5 Ra. Stock Eliminator Features: Spec 4340 material, built to NHRA Stock Eliminator exact requirements. Profiled for piston clearance, drilled rod journals, precision ground and mirco-polished to 5 Ra. Magnum Features : Ultra pure AISI 4340 steel, triple heat-treated, nitride hardened, gun-drilled mains, full profiled counterweights, precision ground and micro-polished to 5 Ra.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke 3.773" 4.000" 4.013" 4.250" 4.250" 4.375" 4.500" 4.750"
Main
CALBB1542B-SE CALBBO42B-MG CALBB1642B-SE CALBBP425-CS CALBBP42B-MG CALBBB42B-MG CALBBQ42B-MG CALBBS42B-MG
Stock Eliminator
6.135" 2.200" 2.750" 6.385" 2.200" 2.750" 6.135" 2.200" 2.750" 6.385" 2.200" 2.750" 6.385" 2.200" 2.750" 6.535" 2.200" 2.750" 6.700" 2.200" 2.750" 6.700" 2.200" 2.750"
2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc. 2-Pc.
Ext. Int. Ext. Int. Int. Int. Int. Int.
2420 2350 2420 2350 2350 2350 2350 2350
67 69 67 72 69 69 69 69
Magnum
Stock Eliminator
Compstar Magnum Magnum Magnum Magnum
Eagle “ESP” Features: SAE 4340 steel non-twist forging, multi-stage heat-treated, stress-relieved, .125" radii for use with narrowed bearings, chamfered oil holes, shot-peened, nitride hardened, X-rayed, magnafluxed, and sonic tested. 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 Early Style Late Style Early Style
Stroke 4.000" 4.000" 4.250"
Main
EAG445440026135 EAG445640046135 EAG445442546385 EAG445442526385
6.135" 2.200" 2.749" 6.135" 2.200" 2.749" 6.385" 2.200" 2.749" 6.385" 2.200" 2.749"
2-Pc. 1-Pc. 2-Pc. 2-Pc.
Int. Int. Int. Int.
2350 2350 2350 2350
70 70 72 72
Early Style, w/Center Counterweights Early Style, w/Center Counterweights Early Style, w/Center Counterweights Early Style, w/Center Counterweights
4.250"
EAG445443756385
4.375"
6.385" 2.200" 2.749"
2-Pc.
Int.
2350
72
EAG445445006535
4.500"
6.535" 2.200" 2.749"
2-Pc.
Int.
2300
75
EAG450247506600
4.750"
6.600" 2.200" 2.749"
2-Pc.
Int.
2425
78
K1 Technologies Features: Premium 4340 steel, core nitride hardened, stress-relieved, gun-drilled rod and mains, properly placed counter- weights, large fillet radii for use with narrowed bearings, straight hole rod oiling, magnafluxed and micro-polished.
Min. Rod Length
Rod Pin
Rear Main Seal Balance
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke 4.250"
Main
K1T012GAG425
Standard Weight
6.385" 2.200" 2.749'
2-Pc.
Int.
2150
81
2018 ENGINE BUILDER CATALOG
17
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