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ENGINE SPECS

1950 Ford 239 Flathead V8 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: V8 - 0BA

Wheel base: 114

Valve Location: In block

Bore and Stroke: 3-3/16" x 3-3/4"

Piston displacement, Cubic Inches: 239.4

Compression ratio: 6.80

Maximum Brake Horsepower: 100 @ 3600 RPM

Maximum Torque Lbs.Ft. @ RPM: 181 @ 2000

Normal Oil Pressure Pounds: 57

TUNE UP SPECIFICATIONS

Spark Plug Make: Champion H10

Spark Plug Gap, Inch: .030

Firing Order: 15486372 (from front to rear: Right 1-2-3-4; left 5-6-7-8

Ignition Timing: Groove on Pulley

Engine Idle Speed, RPM: Manual shift trans. 475; automatic shift trans.: 440

Cylinder Head Torque Lbs.Ft.: 65-70

Compression Pressure & Cranking Speed: 110 Min.

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale:
    Removed from Above
    Shim thickness to use: .003
    Pounds Pull on Scale: 6 to 10

Rings: (for tapered bores for minimum clearance fit rings in tightest portion of ring travel)
    Ring Gap, Minimum: Compression: .007
    Ring Gap, Minimum: Oil: .007
    Clearance in Groove: Compression: Top ring: .0015-.003; lower rings: .001-.0025
    Clearance in Groove: Oil: .001-.003

Wristpin Diameter, Inch: .7501-.7504

VALVE SPECIFICATIONS

Operating Clearance:
    Intake: .014 Cold
    Exhaust: .018 Cold

Clearance for Timing Intake: .014

Valve Seat Angle, degrees: 45

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
    Intake opens: 5 degrees BTDC
     Exhaust Closes: 3 degrees ATDC

Valve Spring Pressure Pounds at Inches Length:
     Spring: 40 @ 2-1/8

Valve Stem Clearance:
    Intake: .001-003
    Exhaust: .0015-.0035

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.1390
    Bearing Clearance, Inch: .0005-.003
    Rod End Play, Inch: .006-.014
    Rod Bolt Tension, Lbs.Ft.: 40

Main Bearings:
    Journal Diameter, Inches: 2.4990
    Bearing Clearance, Inch: .000-.003
    Crankshaft End Play, Inch (taken on rear bearing): .002-.006
    Main Bolt Tension, Lbs.Ft.: 100

CAPACITY DATA

Cooling System:
    Without heater: 21 quarts
    With heater: 22 quarts

Fuel Tank: 16 gallons

Engine Oil: 4 quarts

Transmission:
    without overdrive: 3-1/4 pints
    with overdrive: 4

Rear Axle: 3-1/2 pints; Station wagon: 3

STARTING MOTOR SPECIFICATIONS

Unit Number: 7RA-11001

Brush Spring Tension: 48-56 ounces

No Load Test: 70 Amps, 6 Volts @ 3000 RPM

Torque Test: 700 Amps, 3.5 Volts, 16 Lbs.Ft. Torque

LOADAMATIC DISTRIBUTOR SPECIFICATIONS

Distributor part number: 7RA-12127C, 8BA-12127, OBA-12127

Cam Angle, degrees: 28

Breaker Gap, Inch: .014-.016

Condenser Capacity: .21-.25 Mfds.

Breaker Arm Spring Tension: 17-20 Oz.

Distributor Vacuum Advance Data:
Centrifugal Advance:
    7RA-12127C:
        Degrees advance at 500 RPM: 1-1/4 - 2-1/4, Inches vacuum: .40
        Degrees advance at 1000 RPM: 4-1/4 - 5-1/4, Inches vacuum: 1.7
        Degrees advance
at 1500 RPM: 6-1/4 - 7-1/4, Inches vacuum: 2.8
        Degrees advance at 2000 RPM: 7-1/2 - 8-1/2, Inches vacuum: 3.7
    8BA-12127, OBA-12127:
        Degrees advance at 500 RPM: 0 - 1, Inches vacuum: .30
        Degrees advance at 1000 RPM: 5.2 - 6.2, Inches vacuum: 1.32
        Degrees advance
at 1500 RPM: 8-3/4 - 10, Inches vacuum: 2.85
        Degrees advance at 2000 RPM: 10 - 11-1/4, Inches vacuum: 3.7

GENERATOR SPECIFICATIONS

Generator Number: 8BA-10000D (generator rotates clockwise)

Generator output: 36 Amps @ 1700 RPM

Brush Spring Tension: 30 oz.

REGULATOR SPECIFICATIONS

Regulator Number: 8M-10505

Cutout Relay:
    Voltage to close points: 6.3
    Reverse Current to Open Points: 0-8 amps
    Voltage regulator setting: 7.3 volts
    Current regulator settins: 34 amps