CRANKSHAFTS
Cast Steel Crankshafts - Cont. Scat
Pro Stock features 9000 cast steel, precision-ground, micro-polished, factory balanced, 5.700" or longer rod, and is WISSOTA approved. Pro Comp features 9000 cast steel, precision ground, knife-edged counterweights, factory balanced, straight shot oil holes, micro-polished, and is IMCA and Racesaver approved.
Min. Rod Length
Rod Pin
Rear Main Seal
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description Pro Stock Pro Comp Pro Comp
Stroke 4.000" 4.250" 4.250"
Main
Balance
SCA9-10454
6.135" 2.200" 2.749" 2-Piece 6.135" 2.200" 2.749" 2-Piece 6.385" 2.200" 2.749" 2-Piece
Ext. Ext. Ext.
2350 2350 2350
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 counterweights profiled for
piston clearance, drilled rod journals, precision ground and micro-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 micro-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
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description Magnum Compstar Magnum Magnum Magnum Magnum
Stroke
Main
Balance
CALBBO42B-MG CALBBP425-CS CALBBP42B-MG CALBBB42B-MG CALBBQ42B-MG CALBBS42B-MG
4.000" 4.250" 4.250" 4.375" 4.500" 4.750"
6.385" 2.200" 2.750" 2-Piece 6.385" 2.200" 2.750" 2-Piece 6.385" 2.200" 2.750" 2-Piece 6.535" 2.200" 2.750" 2-Piece 6.700" 2.200" 2.750" 2-Piece 6.700" 2.200" 2.750" 2-Piece
Int. Int. Int. Int. Int. Int.
2350 2350 2350 2350 2350 2350
69 72 69 69 69 69
Eagle “ESP” features SAE 4340 steel non-twist forging, multi-stage heat-treat- ed, 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
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description Early Style Late Style Early Style
Stroke
Main
Balance
EAG445440026135 EAG445640046135 EAG445442546385
4.000" 4.000" 4.250"
6.135" 2.200" 2.749" 2-Piece 6.135" 2.200" 2.749" 1-Piece 6.385" 2.200" 2.749" 2-Piece
Int. Int. Int.
2350 2350 2350
70 70 72
Early Style, w/Center Counterweights
EAG445442526385
4.250"
6.385" 2.200" 2.749" 2-Piece
Int.
2350
72
EAG445642526385 Late Style, Lightweight
4.250"
6.385" 2.200" 2.749" 1-Piece
Int.
2350
72
Early Style, w/Center Counterweights Early Style, w/Center Counterweights Early Style, w/Center Counterweights
EAG445443756385
4.375"
6.385" 2.200" 2.749" 2-Piece
Int.
2350
72
EAG445445006535
4.500"
6.535" 2.200" 2.749" 2-Piece
Int.
2300
75
EAG450247506600
4.750"
6.600" 2.200" 2.749" 2-Piece
Int.
2425
78
K1 Technologies Feature premium 4340 steel, core nitride-hardened, stress-relieved, gun-drilled rod and mains, properly placed counterweights, large fillet radii for use with narrowed bearings, straight hole rod oiling, magnafluxed, and micro-polished.
Min. Rod Length
Rod Pin
Rear Main Seal
Target Bobweight Grams
Approx. Weight Lbs.
Part No.
Description
Stroke 4.250"
Main
Balance
K1T012GAG425
Standard Weight
6.385" 2.200" 2.749" 2-Piece
Int.
2150
81
196
2021-22 ENGINE BUILDER CATALOG
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