Spicer Front and Rear Axle Catalog - Manual (Page 149)

X510-9
(7) See Ring Gear & Pinion Kits in XGI Catalog for ratio & tooth combinations.
(8) See Differential Case Assy Kits in XGI Catalog for spline data & ratios.
Axle Axle Kits Shaft & Joint Assy.
Differential
Bill of
Material
Diff.
Type
Ratio
Ring Gear &
Pinion Kit (7) Case Assy.
Kit (8)
Case Kit
Inner Parts
Kit
Right Hand
Shaft Assy.
Left Hand
Shaft Assy.
143
Bill of Material Table
GMC / Chevrolet Model 60 Rear Axles
1972 C20 Truck Chassis w/ Leaf Springs
603322-1 Standard 4.10 706660-3X 706664X 706668X 706671X 31494-1 31494-1
603322-2 Powr-Lok 4.10 706660-3X 706172X 706174X 706176X 31494-1 31494-1
603322-3 Standard 4.56 706660-4X 706665X 706669X 706671X 31494-1 31494-1
603322-4 Powr-Lok 4.56 706660-4X 706173X 706175X 706176X 31494-1 31494-1
603322-5 Standard 3.54 706660-1X 706664X 706668X 706671X 31494-1 31494-1
603322-6 Powr-Lok 3.54 706660-1X 706172X 706174X 706176X 31494-1 31494-1
1968 C20 Truck Chassis w/ Coil Springs
602995-1 Standard 3.54 706660-1X 706664X 706668X 706671X 34551-3 34551-3
602995-2 Powr-Lok 3.54 706660-1X 706172X 706174X 706176X 34551-3 34551-3
1969-70 C20 Truck Chassis w/ Coil Springs
603051-1 Standard 3.54 706660-1X 706664X 706668X 706671X 31494-1 31494-1
603051-2 Powr-Lok 3.54 706660-1X 706172X 706174X 706176X 31494-1 31494-1
603051-3 Standard 3.73 706660-2X 706664X 706668X 706671X 31494-1 31494-1
603051-4 Powr-Lok 3.73 706660-2X 706172X 706174X 706176X 31494-1 31494-1
603051-5 Standard 4.10 706660-3X 706664X 706668X 706671X 31494-1 31494-1
603051-6 Powr-Lok 4.10 706660-3X 706172X 706174X 706176X 31494-1 31494-1
603051-7 Standard 4.56 706660-4X 706665X 706669X 706671X 31494-1 31494-1
603051-8 Powr-Lok 4.56 706660-4X 706173X 706175X 706176X 31494-1 31494-1
1971 C20 Truck Chassis w/ Coil Springs
603207-1 Standard 3.54 706660-1X 706664X 706668X 706671X 31494-1 31494-1
603207-2 Powr-Lok 3.54 706660-1X 706172X 706174X 706176X 31494-1 31494-1
603207-3 Standard 3.73 706660-2X 706664X 706668X 706671X 31494-1 31494-1
603207-4 Powr-Lok 3.73 706660-2X 706172X 706174X 706176X 31494-1 31494-1
603207-5 Standard 4.10 706660-3X 706664X 706668X 706671X 31494-1 31494-1
603207-6 Powr-Lok 4.10 706660-3X 706172X 706174X 706176X 31494-1 31494-1
603207-7 Standard 4.56 706660-4X 706665X 706669X 706671X 31494-1 31494-1
603207-8 Powr-Lok 4.56 706660-4X 706173X 706175X 706176X 31494-1 31494-1
1972 C20 Truck Chassis w/ Coil Springs
603321-1 Standard 3.54 706660-1X 706664X 706668X 706671X 31494-1 31494-1
603321-2 Powr-Lok 3.54 706660-1X 706172X 706174X 706176X 31494-1 31494-1
603321-5 Standard 4.10 706660-3X 706664X 706668X 706671X 31494-1 31494-1
603321-6 Powr-Lok 4.10 706660-3X 706172X 706174X 706176X 31494-1 31494-1
603321-7 Standard 4.56 706660-4X 706665X 706669X 706671X 31494-1 31494-1
603321-8 Powr-Lok 4.56 706660-4X 706173X 706175X 706176X 31494-1 31494-1
1968-70 C25 Truck Chassis w/ Standard Wheel Base
603033-1 Standard 3.54 706660-1X 706664X 706668X 706671X 31494-1 31494-1
603033-2 Powr-Lok 3.54 706660-1X 706172X 706174X 706176X 31494-1 31494-1
603033-3 Standard 3.73 706660-2X 706664X 706668X 706671X 31494-1 31494-1
603033-4 Powr-Lok 3.73 706660-2X 706172X 706174X 706176X 31494-1 31494-1
603033-5 Standard 4.10 706660-3X 706664X 706668X 706671X 31494-1 31494-1
603033-6 Powr-Lok 4.10 706660-3X 706172X 706174X 706176X 31494-1 31494-1
603033-7 Standard 4.56 706660-4X 706665X 706669X 706671X 31494-1 31494-1
603033-8 Powr-Lok 4.56 706660-4X 706173X 706175X 706176X 31494-1 31494-1