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ENGINE SPECS

1956 Dodge 270 V8 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: Coronet V8: D63-1
Wheel base: 120
Valve Location: In head
Bore and Stroke: 3.63 x 3.256
Piston displacement, Cubic Inches: 270
Compression ratio: 8.0
Maximum Brake Horsepower: 189 @ 4400 RPM
Maximum Torque Lbs.Ft. @ RPM: 266 @ 2400 RPM
Normal Oil Pressure Pounds: 50-65

TUNE UP SPECIFICATIONS (all models)

Spark Plug Make: Auto-Lite 4R52
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: 6 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: 120 min.
Voltage & Polarity: 12 volts, negative 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: .010
Oil: .010
Clearance in Groove: Compression: .001-.0025; Oil: .001-.003
Wristpin Diameter, Inch: .8591-.8593

VALVE SPECIFICATIONS

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: 14 BTDC
         Exhaust Closes: 12 ATDC
Valve Spring Pressure Pounds at Inches Length:
    Inner Spring: 53 @ 1.69; Outer spring: (single spring used)
Valve Stem Clearance: Intake: .002; Exhaust: .003

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 1.94
    Bearing Clearance, Inch: .0005-.0015
    Rod End Play, Inch: .006-.014
    Rod Bolt Tension: Lbs.Ft.: 45-50
Main Bearings:
    Journal Diameter, Inches: 2.38
    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: 1BJ-4301A, 1BJ-4303, 1BJ-4303B (distributor rotates clockwise)
Cam Angle, degrees: 31
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: 1BJ-4301A: 1 @ 400 RPM; 1BJ-4303: 1 @ 415 RPM; 1BJ-4303B: 1 @ 410 RPM
    Full Advance: 1BJ-4301A: 15 @ 2150 RPM
; 1BJ-4303: 16 @ 2350; 1BJ-4303B: 15 @ 2350 RPM
Vacuum Advance (degrees @ Inches of Mercury)
    Advance Starts: 1 @ 6; 1BJ-4303: 1 @ 7
    Full Advance: 1BJ-4301A: 12-1/2 @ 15; 1BJ-4303: 11 @ 15; 1BJ-4303B: 8 @ 12

AUTO-LITE GENERATOR SPECIFICATIONS

Generator Number: GJC-7001A, GJC-7002A, GJC-1003B (generator rotates clockwise, 12 volts, Negative Ground)
Generator output: 30 amps @ 2250 RPM
Brush Spring Tension: 18-36 oz.
Field Current at 5 Volts: 1.2-1.3

AUTO-LITE REGULATOR SPECIFICATIONS

Regulator Number: VRX-6201A
Cutout Relay:
    Voltage to close points: 13.4
    Reverse current to open points: 8.2-9.3
    Armature Air Gap: .031 inches
Voltage Regulator Setting: 14.4 volts
Current and Voltage Armature Air Gap: .048 inches
Current Regulator Setting: 30 amps

AUTO-LITE STARTING MOTOR SPECIFICATIONS

Part number: MDF-6002, MDF-6007, MDG-6001, MDG-6002 (rotates clockwise)
Bush Spring Tension, Ounces: 42-53
No Load Test: MDF-6002, MDF-6007: 60 amps, 10 volts @ 3200 RPM; MDG-6001, MDG-6002: 50 amps @ 4400 RPM
Torque Test: MDF-6002, MDF-6007: 240 Amps, 4.0 volts; Torque: 6.5 ft/lbs.; MDG-6001, MDG-6002: 210 amps, 4.0 volts, Torque: 5.0 ft/lbs.

WHEEL ALIGNMENT SPECIFICATIONS

Caster, Degrees
    Limits: -2 to 0
    Desired: -2 (with power steering: 0 preferred)
Camber, Degrees
    Limits: -1/8 to +5/8
    Desired: +1/4
Toe-In, Inches: 3/32 to 5/32
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)
    5-1/2 @ 0 camber

·  Understanding Second Chance Garage's Vintage Auto Engine Specs



 

 

 

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