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ENGINE SPECS

1955 Dodge 270 V8 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: Coronet V8: D55-1; Royal V8: D55-2; Custom Royal V8: D55-3

Wheel base: 120

Valve Location: In head

Bore and Stroke: 3-5/8 x 3-1/4

Piston displacement, Cubic Inches: 270

Compression ratio: 7.6

Maximum Brake Horsepower: 175 @ 4400 RPM; Custom Royal Lancer: 183 @ 4400 RPM

Maximum Torque Lbs.Ft. @ RPM: 240 @ 2400 RPM; Custom Royal Lancer: 245 @ 2400 RPM

Normal Oil Pressure Pounds: 45

TUNE UP SPECIFICATIONS (all models)

Spark Plug Make: Auto-Lite 4S-165

Spark Plug Gap, Inch: .035

Firing Order: 18436572 front to rear: left bank: 1-3-5-7; right bank: 2-4-6-8

Timing Mark: 4 degrees Before Top Dead Center; location: Pulley

Engine Idle Speed, RPM:  w/manual transmission: 475; w/automatic: 475

Cylinder Head Torque Lbs.Ft.: 85

Compression Pressure & Cranking Speed: 125 min.

Voltage & Polarity: 6 volts, positive ground

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale: Pistons removed from above. Shim thickness: .0015

Pounds on a Pull Scale: 5 to 10

Ring End Gap: In tapered bores, fit rings in tightest portion of ring travel
Compression: .007
Oil: .007

Clearance in Groove: Compression: .001-.0025; Oil: .001-.0025

Wristpin Diameter, Inch: .8591-.8593

VALVE SPECIFICATIONS
(Note: all Valve Specs. for Red Ram unless noted)

Operating Clearance:
     Intake: 0;  Exhaust: 0

Valve Seat Angle, degrees: 45

Clearance for Timing Intake: 0

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
         Intake opens: 17 BTDC
         Exhaust Closes: 9 ATDC

Valve Spring Pressure Pounds at Inches Length:
    Inner Spring: 53 @ 1-11/16; Outer spring: (single spring used)
Super Red Ram:
    Inner Spring: 40 @ 1-11/16; Outer spring: 100 @ 1-5/16

Valve Stem Clearance: Intake: .002; Exhaust: .002

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 1.9365-1,9375
    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 on Center Bearing)
    Main Bolt Tension: Lbs.Ft.: 80-85

CAPACITY DATA

Cooling System:
    Without heater: 19 quarts; With heater: 20 quarts

Fuel Tank: 17 gallons

Engine Oil: 5 quarts

Transmission: Manual: 2-3/4 Pints; w/overdrive: 3-1/4 ; w/Automatic Transmission: 10 quarts

Rear Axle: 3-1/4 pints

AUTO-LITE DISTRIBUTOR SPECIFICATIONS

Distributor part number: 1AZ-4003G, 1AZ-4003F (distributor rotates clockwise)

Cam Angle, degrees: 26-28

Breaker Point opening, Inch: .017

Condenser Capacity: .25-.28 Mfds.

Breaker Arm Spring Tension: 17-20 Oz.

Centrifugal Advance: (degrees at RPM of distributor)
    Advance starts: 1 @ 425 RPM
    Full Advance: 1AZ=4003G: 17 @ 1650 RPM
; 1AZ-4003F: 13 @ 1625 RPM
Vacuum Advance (degrees @ Inches of Mercury)
    Advance Starts: 1 @ 6
    Full Advance: 1AZ-4003G: 4 @ 8-1/2; 1AZ-4003F: 7 @ 11

AUTO-LITE GENERATOR SPECIFICATIONS

Generator Number: GGW-6001, GGW-6012 (generator rotates clockwise, 6 volts, Positive Ground)

Generator output: 45 amps @ 2125 RPM

Brush Spring Tension: 35-53 oz.

Field Current at 5 Volts: 1.4-1.5

AUTO-LITE REGULATOR SPECIFICATIONS

Regulator Number: VBE-6001A

Cutout Relay:
    Voltage to close points: 6.5
    Reverse current to open points: 4-6
    Armature Air Gap: .031 inches

Voltage Regulator Setting: 7.3 volts

Current and Voltage Armature Air Gap: .048 inches

Current Regulator Setting: 45 amps

AUTO-LITE STARTING MOTOR SPECIFICATIONS

Part number: MCH-6205; MCH-6206 (rotates clockwise)

Bush Spring Tension, Ounces: 42-53

No Load Test: 65 amps, 5 volts @ 4300 RPM

Torque Test: 335 Amps, 2.0 volts; Torque: 6.0 ft/lbs.

WHEEL ALIGNMENT SPECIFICATIONS

Caster, Degrees
    Limits: -2 to 0
    Desired: -1

Camber, Degrees
    Limits: -1/8 to +5/8
    Desired: +1/4

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, 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)
    5 @ 0 camber


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