1955 Studebaker 259 V8 Engine Specs.
GENERAL SPECIFICATIONS
Model Designation: Commander V8: 16G8 (this engine was only used after Jan. 3, 1955) President V8: 6H
Wheel base: 2 & 4 door sedans: 116-1/2"; coupes & hardtop convertibles: 120-1/2; Land Cruiser: 120-1/2"
Valve Location: In head
Bore and Stroke: 3-9/16 x 3-1/4
Piston displacement, Cubic Inches: 259.2
Compression ratio: 7.50
Maximum Brake Horsepower: Commander 16G8: 162 @ 4500 RPMPresident V8 6H: 175 @ 4500 RPM (prior to Jan. 3, 1955)President V8 6H: 185 @ 4500 RPM (after Jan. 3, 1955)
Maximum Torque Lbs.Ft. @ RPM:Commander V8 15G8: 250 @ 2800 RPMPresident V8 6H: 250 @ 3000 RPM (prior to Jan. 3, 1955)President V8 6H: 258 @ 2800 RPM (after Jan. 3, 1955)
Normal Oil Pressure Pounds: 40
TUNE UP SPECIFICATIONS
Spark Plug Make: Champion H11
Spark Plug Gap, Inch: .035
Firing Order: 18436572 (front to rear: left bank: 1-3-5-7; right bank 2-4-6-8)
Ignition Timing: IGN on Vib. Damp.
Engine Idle Speed, RPM: 500
Cylinder Head Torque Lbs.Ft.: 60
Compression Pressure & Cranking Speed: 120 Min.
Voltage & Polarity: 6 volts, positive ground
PISTON AND RING SPECIFICATIONS
Fitting Pistons with Scale:Shim Thickness to use: .002 (1 inch wide feeler);
Pounds Pull on Scale:: 11 to 16
Ring End Gap: (Fit rings in tapered bores for clearance shown in tightest portion of ring travel.)Compression: .008Oil: .008
Clearance in Groove: Compression: .002-.0025; Oil: .0015-.002
Wristpin Diameter, Inch: .875
VALVE SPECIFICATIONS
Operating Clearance: Intake: .024 Hot Exhaust: .024 Hot
Valve Seat Angle, degrees: 45
Valve Timing: (BTDC = before top dead center; ATDC = after top dead center) Intake opens: 19 degrees BTDC Exhaust Closes: 6 ATDC
Valve Spring Pressure Pounds at Inches Length: Inner Spring: 50 @ 2-1/32
Valve Stem Clearance: Intake: .0015-.0035; Exhaust: .0015-.0035
Clearance for Timing Intake: .030
ENGINE BEARING SPECIFICATIONS
Connecting Rod Bearings: Journal Diameter, Inches: 1.99925-2.00025 Bearing Clearance, Inch: .0005-.00215 Rod End Play, Inch: .007-.012 Rod Bolt Tension: Lbs.Ft.: 52-54
Main Bearings: Journal Diameter, Inches: 2.4995-2.5000 Bearing clearance: .0006-.0027 Shaft End Play: .003-.006 (Thrust on front bearing) Main Bolt Tension: Lbs.Ft.: 88-93
CAPACITY DATA
Cooling System: Without heater: 17-1/4 quarts With heater: 18-3/4 quarts
Fuel Tank: 18 gallons
Engine Oil: 6 quarts
Transmission: w/out overdrive: 2-1/2 pint; with overdrive: 3-1/2; w/Auto. trans.: 9-1/2 quarts
Rear Axle: 3 pints
DELCO-REMY DISTRIBUTOR SPECIFICATIONS
Distributor part number: 1110839 (distributor rotates counter-clockwise when viewed from top)
Cam Angle, degrees: 28-34
Breaker Point opening, Inch: .013
Condenser Capacity: .20-.25 Mfds.
Breaker Arm Spring Tension: 17-21 Oz.
Centrifugal Advance: (degrees at RPM of distributor) Advance starts: 2-1/2 degrees @ 350 Full Advance: 17 degrees @ 1450
Vacuum Advance Data: Inches of Vacuum to Start Plunger Movement: 4-6 Inches of Vacuum for Full Plunger Travel: 10-1/2 - 12-1/2 Maximum Vacuum Advance, Dist. Degrees: 8
DELCO-REMY GENERATOR SPECIFICATIONS
Generator Number: 1102778 (generator rotates clockwise, 6 volts, positive ground)
Generator output: 45 amps @ 2450 RPM
Brush Spring Tension: 28 oz.
Field Current: 1.87 - 2.0 at 6 volts
DELCO-REMY REGULATOR SPECIFICATIONS
Regulator Number: 1118950
Cutout Relay: Voltage to close points: 6.4 Reverse Current to Open Points: 1 amp Armature Air Gap: .020
Voltage Regulator Setting: 7.4 volts
Current Regulator Setting: 45 amps
Current and voltage armature air gap, Inch: .075
DELCO-REMY STARTING MOTOR SPECIFICATIONS
Part number: 1107115, 1107116 (starter rotates clockwise)
Bush Spring Tension, Ounces: 24-28
No Load Test: 70 amps, 5.65 volts @ 5500 RPM
Torque Test: 550 Amps, 3.25 volts, Torque, Lbs.Ft.: 11
WHEEL ALIGNMENT SPECIFICATIONS
Caster, Degrees Limits: -1 to -2-1/2 Desired: -1-3/4
Camber, Degrees Limits: 0 to +1 Desired: +1/2
Toe-In, Inches: 1/16 to 1/8
Toe-Out on Turns, Degrees: (If toe-out is incorrect, when other adjustments are correct, look for bent steering arms.) Outer wheel: 20 Inner Wheel: 22-1/2 to 23-1/2
Kingpin Angle, or Steering Axis Degrees: (If king pin or spindle support angle are incorrect, but camber is correct, look for bent suspension arms or steering knuckle support) 6 @ 0 Camber




The Official Studebaker Reference Guide
1955






Lowey Commander Hardtop


President Coupe
Starting Serial Number: 16G6 Champion... G-1316501
Ser. 16G8 Commander... 8380601
Ser. 6H President... 7150001
Location: On plate on left front door post.
Starting Motor Serial Number: 16G6-Champion... 1138001
16G8-Commander... V-312701
6H-President... P-101
Location: 6 and straight 8 - Upper left side of cylinder block.
V8 - Top side front of cylinder block.

Production Information: Champion 50,368
Commander 58,792
President 24,666
General Specifications:
Model Wheelbase (In.) Tread (front) Tread (rear) Length Width Height Shipping Weight (lb.) Tire Size (In.)
16G6-Champion n/a n/a n/a 204 n/a n/a n/a 6.40-15
16G8-Commander n/a n/a n/a 240 n/a n/a n/a 6.70-15
6H-President n/a n/a n/a 206 n/a n/a n/a 7.10-15

General Engine Specifications:
Model # of Cyl - Bore & Stroke # of Main Bearings Type of Lifter Used Displacement Taxable H.P. Developed H.P. Max. Torque Compression Oil Pressure
Champion 6 Cyl. 6 - 3 x 4 3/8 4 Mech. Adj. 185 21.6 101 @ 4000 152 @ 1800 7.5 40
Commander - V8 * 8 - 3 9/16 x 2 13/16 5 Mech. Adj. 259 40.6 140 @ 4500 202 @ 2800 7.5 40
President - V8 8 - 3 9/16 x 3 1/4 5 Mech. Adj. 259 40.6 185 @ 4500 258 @ 3000 7.5 40

* After engine numbers 8397201; 8843001; 8958101; the engine was changed to the same engine of the President, except HP is only 162@4500 & torque is 250@2800.

Engine Tune-Up Specifications:
Model Plug Type Plug Gap Dwell Point Gap Ign. Timing Compression Inlet Tappet (hot) Exhaust Tappet (hot) Fuel Pressure Min. Engine Idle
16G6 Champion J7 .030 39 .020 2B 140 .016 .016 4 3/4 550
16G8 Commander H11 .035 31 .013 8B 130 .026 .026 4 3/4 550
6H President H11 .035 31 .013 4B 130 .026 .026 4 3/4 550

Table of Contents | Chapter 5 - Studebaker Cars - Postwar
====================================================================================================================
Studebaker applications and repair kits


Year Engine Model | - - - - - Carburetor - - - - - | Kit


1955 6 170 16G Champion Carter WE 2108 1209
1955 8 224 Commander (Early) Stromberg WW 6 115 537649 1233
1955 8 224 Commander A/T Stromberg WW 6 116 537879 386
1955 8 259 16G (Late) Stromberg WW 6 115 537649 1233
1955 8 259 6H President A/T Carter WCFB 2214 518
1955 8 259 6H President S/T Carter WCFB 2219 518
1955 8 259 6H President S/T Carter WCFB 2330 537887 518


Studebaker General Specs
FRAMES version



Year ProdTotal ModelDesignation WheelbaseInches WeightMin/Max TireSize WheelBoltPattern ValveLocation BoreandStroke PistonDisplacementCubicInches CompressionRatio(Standard) MaximumBrakeH.P.@R.P.M. MaximumTorqueLbs. Ft.@R.P.M. NormalOilPressLbs SparkPlugType SparkPlugGap PointGap DwellAngle FiringOrder IgnitionTimingBTDCorMark Grnd+/-Volts

1954 34,966 Champion 6 15G 116.5 2705/2950 6.40x15 5 x 4.5 In Block 3 x 4 169.6 7.50 85 @ 4000 138 @ 2400 40 J7 .025 .020 38-40 153624 2° +6
16,469 Champion Coupe 6 15G 120.5 2740/2825 6.40x15 5 x 4.5 In Block 3 x 4 169.6 7.50 85 @ 4000 138 @ 2400 40 J7 .025 .020 38-40 153624 2° +6
13,062 Commander V8 5H 116.5 3075/3120 7.10x15 5 x 4.5 In Head 3 3/8 x 3 1/4 232.6 7.50 127 @ 4000 202 @ 2000 40 H11 .035 .013 28-34 18436572 4° +6
11,059 Commander Coupe V8 5H 120.5 3180/3265 7.10x15 5 x 4.5 In Head 3 3/8 x 3 1/4 232.6 7.50 127 @ 4000 202 @ 2000 40 H11 .035 .013 28-34 18436572 4° +6
6,383 Land Cruiser V8 5H 120.5 3180/3180 7.10x15 5 x 4.5 In Head 3 3/8 x 3 1/4 232.6 7.50 127 @ 4000 202 @ 2000 40 H11 .035 .013 28-34 18436572 4° +6
1955 39,673 Champion 6 16G6 116.5 2740/2815 6.40x15 5 x 4.5 In Block 3 x 4 3/8 185.6 7.50 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° +6
10,701 Champion Coupe 6 16G6 120.5 2790/2985 6.70x15 5 x 4.5 In Block 3 x 4 3/8 185.6 7.50 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° +6
43,878 Commander V8 Early 16G8 116.5 3005/3080 6.70x15 5 x 4.5 In Head 3 9/16 x 2 13/16 224.3 7.50 140 @ 4500 202 @ 2800 40 H11 .035 .013 28-34 18436572 4° +6
Commander V8 Late 16G8 116.5 3005/3080 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259.2 7.50 162 @ 4500 250 @ 2800 40 H11 .035 .013 28-34 18436572 4° +6
14,910 Commander Coupe V8 Early 16G8 120.5 3065/3275 6.70x15 5 x 4.5 In Head 3 9/16 x 2 13/16 224.3 7.50 140 @ 4500 202 @ 2800 40 H11 .035 .013 28-34 18436572 4° +6
Commander Coupe V8 Late 16G8 120.5 3065/3275 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259.2 7.50 162 @ 4500 250 @ 2800 40 H11 .035 .013 28-34 18436572 4° +6
24,665 President V8 Early 6H 120.5 3110/3301 7.10x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259.2 7.50 175 @ 4500 250 @ 3000 40 H11 .035 .013 28-34 18436572 4° +6
President V8 Late 6H 120.5 3110/3301 7.10x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259.2 7.50 185 @ 4500 258 @ 2800 40 H11 .035 .013 28-34 18436572 4° +6
1956 21,731 Champion 6 56G 116.5 2780/2835 6.40x15 5 x 4.5 In Block 3 x 4 3/8 185 7.50 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
4,949 Flight Hawk 6 56G 120.5 2780/2780 6.40x15 5 x 4.5 In Block 3 x 4 3/8 185 7.50 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
2,236 Pelham 6 56G 116.5 3000/3000 6.40x15 5 x 4.5 In Block 3 x 4 3/8 185 7.50 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
20,221 Commander V8 56B 116.5 3085/3140 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 7.80 170 @ 4500 260 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
7,095 Power Hawk V8 56B 120.5 3095/3095 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 7.50 170 @ 4500 260 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
3,333 Parkview V8 56B 116.5 3300/3300 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 7.80 170 @ 4500 260 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
17,243 President V8 56H 116.5 3180/3210 7.10x15 5 x 4.5 In Head 3 9/16 x 3 5/8 289 7.80 195 @ 4500 286 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
8,507 Classic V8 56H 120.5 3295/3295 7.10x15 5 x 4.5 In Head 3 9/16 x 3 5/8 289 7.80 195 @ 4500 286 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
3,050 Sky Hawk V8 56H 120.5 3215/3215 6.70x15 5 x 4.5 In Head 3 9/16 x 3 5/8 289 7.80 195 @ 4500 286 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
1,522 Pinehurst V8 56H 116.5 3395/3395 6.70x15 5 x 4.5 In Head 3 9/16 x 3 5/8 289 7.80 195 @ 4500 286 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
4,071 Golden Hawk V8 56J 120.5 3360/3360 7.10x15 5 x 4.5 In Head 4 x 3 1/2 352 9.50 275 @ 4600 380 @ 2800 45 N18-67B .035 .015 28-34 18436572 5° -12
1957 9,348 Scotsman 6 57G 116.5 2680/2875 6.40x15 5 x 4.5 In Block 3 x 4 3/8 185 7.8 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
15,513 Champion 6 57G 116.5 2755/3015 6.40x15 5 x 4.5 In Block 3 x 4 3/8 185 7.8 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
18,448 Commander V8 57B 116.5 3015/3355 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 8.0 180 @ 4500 260 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
5,684 President V8 57H 116.5 3170/3415 7.10x15 5 x 4.5 In Head 3 9/16 x 3 5/8 289 8.0 210 @ 4500 300 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
6,063 Classic V8 57H 120.5 3270/3270 7.10x15 5 x 4.5 In Head 3 9/16 x 3 5/8 289 8.0 210 @ 4500 300 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
4,283 Silver Hawk 6 57G 120.5 2790/2790 6.70x15 5 x 4.5 In Block 3 x 4 3/8 185 7.8 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
11,035 Silver Hawk V8 57H 120.5 3185/3185 6.70x15 5 x 4.5 In Head 3 9/16 x 3 5/8 289 8.0 210 @ 4500 300 @ 2800 40 H11 .035 .016 28-34 18436572 4° -12
4,356 Golden Hawk V8 57H 120.5 3400/3400 7.10x15 5 x 4.5 In Head 3 9/16 x 3 5/8 289 7.5 275 @ 4500 333 @ 3200 40 H10 .035 .016 28-34 18436572 4° -12
1958 21,990 Scotsman 6 58G 116.5 2695/3030 6.40x15 5 x 4.5 In Block 3 x 4 3/8 185 7.8 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
6,765 Champion 6 58G 116.5 2795/2835 6.40x15 5 x 4.5 In Block 3 x 4 3/8 185 7.8 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
88 Scotsman V8 58B 116.5 3185/3420 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 8.3 180 @ 4500 260 @ 2800 40 H18Y .035 .016 28-34 18436572 4° -12
11,738 Commander V8 58B 116.5 3185/3420 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 8.3 180 @ 4500 260 @ 2800 40 H18Y .035 .016 28-34 18436572 4° -12
3,908 President V8 58H 116.5 3355/3365 8.00x14 5 x 4.5 In Head 3 9/16 x 3 5/8 289 8.3 225 @ 4500 305 @ 3000 40 H18Y .035 .016 28-34 18436572 4° -12
1,171 President V8 58H 120.5 3355/3365 8.00x14 5 x 4.5 In Head 3 9/16 x 3 5/8 289 8.3 225 @ 4500 305 @ 3000 40 H18Y .035 .016 28-34 18436572 4° -12
2,442 Silver Hawk 6 58G 120.5 2810/2810 7.50x14 5 x 4.5 In Block 3 x 4 3/8 185 7.8 101 @ 4000 152 @ 1800 40 J7 .030 .020 38-40 153624 2° -12
4,908 Silver Hawk V8 58H 120.5 3210/3210 7.50x14 5 x 4.5 In Head 3 9/16 x 3 5/8 289 8.3 210 @ 4500 300 @ 2800 40 H18Y .035 .016 28-34 18436572 4° -12
878 Golden Hawk V8 58H 120.5 3470/3470 8.00x14 5 x 4.5 In Head 3 9/16 x 3 5/8 289 7.8 275 @ 4500 333 @ 3200 40 H18Y .035 .016 28-34 18436572 4° -12
1959 78,798 Lark VI 6 Cyl 59S 108.5 2577/3470 5.90x15 5 x 4.5 In Block 3.00 x 4.00 170 8.3 90 @ 4000 145 @ 2000 40 J7 .030 .020 38-40 153624 2° -12
19,945 Lark VI 6 Cyl 59S 113 2577/3470 5.90x15 5 x 4.5 In Block 3.00 x 4.00 170 8.3 90 @ 4000 145 @ 2000 40 J7 .030 .020 38-40 153624 2° -12
16,539 Lark VIII V8 59V 108.5 2899/3225 6.40x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 8.8 180 @ 4500 260 @ 2800 40 H18Y .035 .016 28-34 18436572 4° -12
7,889 Lark VIII V8 59V 113 2899/3225 6.40x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 8.8 180 @ 4500 260 @ 2800 40 H18Y .035 .016 28-34 18436572 4° -12
2,417 Silver Hawk 6 59S 120.5 2795/2795 6.40x15 5 x 4.5 In Block 3.00 x 4.00 170 8.3 90 @ 4000 145 @ 2000 40 J7 .030 .020 38-40 153624 2° -12
5,371 Silver Hawk V8 59H 120.5 3140/3140 6.70x15 5 x 4.5 In Head 3 9/16 x 3 1/4 259 8.8 180 @ 4500 260 @ 2800 40 H18Y .035 .016 28-34 18436572 4° -12