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Second Chance Garage

For the Classic Car
Restoration Enthusiast

Second Chance Garage

Second Chance Garage

For the Classic Car
Restoration Enthusiast

Second Chance Garage

Second Chance Garage

For the Classic Car Restoration Enthusiast

Second Chance Garage

ENGINE SPECS

1946 Ford 239 Flathead V8 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: V8 - 69A (first serial number: 99A-650280)

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: 6.75

Maximum Brake Horsepower: 100 @ 3800 RPM

Maximum Torque Lbs.Ft. @ RPM: 180 @ 2000

Normal Oil Pressure Pounds: 30

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 5-6-7-80

Ignition Timing: No timing mark. (Spark is advanced or retarded by adjusting vacuum brake set screw on distributor housing)

Engine Idle Speed, RPM: Manual shift trans. 475; automatic shift trans. N/A

Cylinder Head Torque Lbs.Ft.: 50-60

Compression Pressure & Cranking Speed: 110 Min.

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale: Removed from Above
Shim thickness to use:
With sleeves and aluminum pistons .0025";
without sleeves .002"
Pounds Pull on Scale: 6 to 12

Rings: (for tapered bores for minimum clearance fit rings in tightest portion of ring travel)
Ring Gap, Minimum: Compression: .014
Ring Gap, Minimum: Oil: .014
Clearance in Groove: Compression: .0015-.003
Clearance in Groove: Oil: .0015-.003

Wristpin Diameter, Inch: .7501-.7504

VALVE SPECIFICATIONS

Operating Clearance: Intake: .012 Cold
Exhaust: .014 Cold

Clearance for Timing Intake: .012

Valve Seat Angle, degrees: 45

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
Intake opens: TDC
Exhaust Closes Degrees ATDC: 6

Valve Spring Pressure Pounds at Inches Length: Spring: 37 @ 2-1/8 (only one spring used)

Valve Stem Clearance: Intake: .0025-.0045
Exhaust: .0025-.0045

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings: Journal Diameter, Inches: 2.1390
Bearing Clearance, Inch: .0017-.0036
Rod End Play, Inch: .004-.008
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.: 80

CAPACITY DATA

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

Fuel Tank: 17 gallons

Engine Oil: 5 quarts

Transmission: 2-3/4 pints

Rear Axle: 2-1/2 pints

STARTING MOTOR SPECIFICATIONS

Unit Number: 7RA-1101

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

VACUUM BRAKE DISTRIBUTOR SPECIFICATIONS

Distributor part number: 59A-12127

Cam Angle, degrees: 36, total dwell both breakers

Breaker Gap, Inch: .014-.016

Condenser Capacity: .21-.25 Mfds.

Breaker Arm Spring Tension: 20-24 Oz.

Centrifugal Advance: Advance starts 2 degrees before top center
Full Advance: 12 degrees @ 1725 RPM

GENERATOR SPECIFICATIONS

Generator Number: 21A-10000 (generator rotates clockwise)

Generator output: 30 Amps @ 1700 RPM

Brush Spring Tension: 30 oz.

REGULATOR SPECIFICATIONS

Regulator Number: 8A-10505

Cutout Relay: Voltage to close points: 6.3
Reverse Current to Open Points: 0-8 amps
Armature Air Gap: .017

Voltage Regulator Setting: 7.3 volts

Current Regulator Setting: 30 amps

Current and voltage armature air gap, Inch: .035







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