A Studebaker Reference Guide 1948 Starting Serial Number: 7G Champion... G-314501 & G-827301   Ser. 15A Commander... 4287001 & 4820501 Location: On plate on left front door lock post. Starting Motor Serial Number: Ser. 7G Champion... 342001   Ser. 15A Commander... H-239001 Location: On front corner on left side of block. Production Information: N/A at this time General Specifications: Model Wheelbase (In.) Tread (front) Tread (rear) Length Width Height Shipping Weight (lb.) Tire Size (In.) 7G n/a 56 54 193 70 61 2735 5.50-15 15A 119-123 55 54 204-208 70 62 3280 6.50-15 General Engine Specifications: Model # of Cyl - Bore & Stroke Displacement Compression Taxable H.P. Developed H.P. Max. Torque Champion 6 - 3.0 x 4.0 169.6 6.5 21.6 80 @ 4000 134 @ 2000 Commander 6 - 3 5/16 x 4 3/8 226.2 6.5 26.3 94 @ 3600 176 @ 1600 Engine Tune-Up Specifications: Model Plug Type Plug Gap Point Gap Dwell Ign. Timing Ign. Timing Mark Compression Inlet Tappet Exhaust Tappet Carb. Float Height Min. Engine Idle Champion J-7 .027 1/2 .020 38 2B IGN dmpr 105@150 .016 .016 3/8" float 550 Commander J-7 .0275 .020 38 2B IGN dmpr 105@150 .016 .016 5/8" float 550 Table of Contents | Chapter 5 - Studebaker Cars - Postwar