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ENGINE SPECS

1953 De Soto 276 V8 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: Fire Dome V8 - S16

Wheel base: 125-1/2

Valve Location: In block

Bore and Stroke: 3-5/8 x 3-11/32

Piston displacement, Cubic Inches: 276.1

Compression ratio: 7.10

Maximum Brake Horsepower: 160 @ 4400 RPM

Maximum Torque Lbs.Ft. @ RPM: 250 @ 2000

Normal Oil Pressure Pounds: 50

TUNE UP SPECIFICATIONS

Spark Plug Make: Auto-Lite 4S-140

Spark Plug Gap, Inch: .035

Firing Order: 18436572 From front to rear Left bank: 1-3-5-7; Right bank: 2-4-6-8

Ignition Timing: 4 degrees BTDC Timing mark location: Vib. Damp.

Engine Idle Speed, RPM:  475

Cylinder Head Torque Lbs.Ft.: 85

Compression Pressure & Cranking Speed: 120 Min.

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale:
Removed from above
Shim thickness to use: .002
Pounds on Pull Scale: 5 to 12

Rings: (Fit rings in tapered bores for clearance shown in tightest portion of ring travel.)
Compression: .015; Oil: .015
Clearance in groove: Compression: .001-.0025; Oil: .001-.0025

Wristpin Diameter, Inch: .9216-.9218

VALVE SPECIFICATIONS

Operating Clearance:
     Intake: 0  Exhaust: 0

Clearance for timing Intake: 0

Valve Seat Angle, degrees: 45

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
         Intake opens: 12 degrees BTDC
         Exhaust Closes: 14 ATDC

Valve Spring Pressure Pounds at Inches Length:
     Inner Spring: 35 @ 1-3/16; Outer Spring: 100 @ 1-5/16

Valve Stem Clearance:
    Intake: .001-.003
    Exhaust: .002-.004

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.0615 - 2.0625
    Bearing Clearance, Inch: .0005-.0015
    Rod End Play, Inch: .006-.014
    Rod Bolt Tension, Lbs.Ft.: 45-50

Main Bearings:
    Journal Diameter, Inches: 2.3745-2.3755
    Bearing clearance: .0005-.0015
    Shaft End Play: .002-.007 (Thrust taken by center bearing)
    Main bolt tension, Lbs.Ft.: 80-85

CAPACITY DATA

Cooling System:
    Without heater: 22 quarts
    With heater: 23 quarts

Fuel Tank: 17 gallons

Engine Oil: 5 quarts (with torque converter, engine & converter have combined system using 12 qts (13 w/filter change)

Transmission: 2-3/4 pints, w/semiautomatic: 3 pints; w/overdrive: 3-1/4

Rear Axle: 3-1/4 pints

AUTO-LITE DISTRIBUTOR SPECIFICATIONS

Distributor part number: 1AZ-4002 (distributor rotates clockwise)

Cam Angle, degrees: 34

Breaker Point opening, Inch: .018 Plus or minus .002

Condenser Capacity: .25-.28 Mfds.

Breaker Arm Spring Tension: 17-20 Oz.

Centrifugal Advance: (degrees at RPM of distributor)
   Advance starts 1 degrees @ 375
   Full Advance: 14 degrees @ 1900

Vacuum Advance Data:
   Degrees @ Inches of Mercury:
       Advance starts: 1 @ 6
       Full Advance: 11-1/2 @ 17

AUTO-LITE GENERATOR SPECIFICATIONS

Generator Number: GGW-6001J, GGW-6007B, GGW-6008B, GGW-6008C (generator rotates clockwise, 6 volts, Positive Ground)

Generator output: 45 @ 2125 RPM

Brush Spring Tension: 35-53 oz.

Field Current: 1.4-1.5 at 5 volts

AUTO-LITE REGULATOR SPECIFICATIONS

Regulator Number: VBE-6001A

Cutout Relay:
    Voltage to close points: 6.5
    Reverse current to Open Points (Amps): 4-6
    Armature Air Gap: .031

Voltage Regulator Setting: 7.3 volts

Current Regulator Setting: 45 amps

Current and voltage armature air gap, Inch: .048

AUTO-LITE STARTING MOTOR SPECIFICATIONS

Part number: MCL-6113 (starter rotates clockwise)

Bush Spring Tension, Ounces: 42-53

No Load Test: 65 amps, 5.0 volts @ 4300 RPM

Torque Test: 335 Amps, 2.0 volts, Torque, Lbs.Ft.: 6.0

WHEEL ALIGNMENT SPECIFICATIONS

Caster, Degrees
    Limits: -1 to -3
    
Desired: -2

Camber, Degrees
    Limits: -3/8 to +3/8 
    Desired:
0

Toe-In, Inches: 0 to 1/16

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: 20-1/2 to 22-1/2

Kingpin Angle, Degrees: 5 to 6-1/2


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