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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

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