GENERAL SPECIFICATIONS
|
| Model Designation:
Silver Streak 6: 51-25 |
| Wheel base: 120 |
| Valve Location: In
block |
| Bore and
Stroke: 3-9/16
x 4 |
| Piston displacement, Cubic
Inches: 239.2 |
| Compression
ratio: 6.50 |
| Maximum
Brake Horsepower: 96
@ 3400 RPM |
| Maximum
Torque Lbs.Ft. @ RPM: 191
@ 1200 RPM |
| Normal
Oil Pressure Pounds: 35 |
TUNE UP SPECIFICATIONS (all models) |
| Spark Plug
Make: AC 44-5 |
| Spark Plug
Gap, Inch: .025 |
| Firing
Order: 153624
|
| Timing
Mark: IGN mark on early 1949. Late 1949 thru 1954, first line is for manual shift cars, second line for Hydra-matic cars, and third line is TDC. Location Vib Damp. |
| Engine
Idle Speed, RPM: Standard
transmission: 520; w/automatic 375 (in drive) |
| Cylinder
Head Torque Lbs.Ft.: 60 |
| Compression
Pressure & Cranking Speed: 120 min |
| Voltage & Polarity: 6
volts, negative ground |
PISTON AND RING SPECIFICATIONS
|
| Fitting
Pistons with Scale: Pistons
removed from above. Shim thickness: .0015 |
| Pounds
on a Pull Scale: 10 to 20 |
Ring End
Gap: In tapered bores,
fit rings in tightest portion of ring travel
Compression: .009
Oil: .009 |
| Clearance in Groove: Compression:
.0015-.003; Oil: .001-.0025 |
| Wristpin
Diameter, Inch: .9369-.9375 |
VALVE SPECIFICATIONS
|
Operating
Clearance:
Intake: .012 Hot Exhaust: .012 Hot |
| Valve Seat
Angle, degrees: Intake: 30; Exhaust: 45 |
Valve Timing: (BTDC
= before top dead center; ATDC = after top dead
center)
Intake
opens: 5 BTDC
Exhaust
Closes: 5 ATDC |
Valve Spring
Pressure Pounds at Inches Length:
Inner
Spring: 56 @ 1-29/32 |
| Valve Stem
Clearance: Intake & Exhause: Guides taper .001" per inch. When started in guide, valve should fall through. |
| Clearance for Timing Intake: .015 |
ENGINE BEARING SPECIFICATIONS
|
Connecting Rod Bearings:
Journal
Diameter, Inches: 2.1237-2.1247
Bearing Clearance, Inch: .0005-.0021
Rod End Play, Inch: .007-.012
Rod Bolt Tension: Lbs.Ft.: 45-50 |
Main Bearings:
Journal
Diameter, Inches:
Front: 2.4982-2.4992
No. 2: 2.5294-2.5304
No. 3: 2.5919-2.5929
No. 4: 2.6232-2.6242
Bearing clearance: Rear main: .0003-.0023; all others: .001-.003
Shaft End Play: .003-.008 (Thrust is taken at rear intermediate bearing)
Main Bolt Tension: Lbs.Ft.: 95; Rear main bearing cap 120 ft/lbs
|
CAPACITY DATA
|
Cooling
System:
Without
heater: 18 quarts
Without heater: 19-1/2 quarts
|
| Fuel Tank: 17-1/2
gallons |
| Engine
Oil: 5 quarts |
| Transmission:
w/out overdrive: 1-3/4 pints; |
| Rear Axle: 3-1/4
pints |
DELCO-REMY DISTRIBUTOR SPECIFICATIONS
|
| Distributor part number: 1110222
(distributor rotates counter-clockwise) |
| Cam Angle,
degrees: 31-37 |
| Breaker Point opening, Inch: .022 |
| Condenser
Capacity: .18-.23
Mfds. |
| Breaker Arm Spring Tension: 17-21
Oz. |
Centrifugal Advance: (degrees
at RPM of distributor)
Advance starts: 2 @ 450 RPM
Full Advance: 12-1/2 @ 2000 RPM
Inches of Vacuum to Start Plunger Movement: 7-9
Inches of Vacuum for Full Plunger Movement: 14-1/2 - 16-1/2
Maximum Vacuum Advance Dist., Degrees: 7-1/2 |
DELCO-REMY GENERATOR SPECIFICATIONS
|
| Generator
Number: 1102750, 1102775
(generator rotates clockwise, 6 volts, Negative
Ground) |
| Generator
output: 1102750: 40 amps @ 2150; 1102775: 45 amps @ 2450
RPM |
| Brush Spring
Tension: 28 oz. |
| Field Current at 6 Volts: 1.87-2.0 |
DELCO-REMY REGULATOR SPECIFICATIONS
|
| Regulator
Number: 1118300, 1118723 |
Cutout
Relay:
Voltage
to close points: 6.4
Reverse current to open points: 0-3
Armature Air Gap: .020 |
| Voltage
Regulator Setting: 1118300: 7.3
volts; 1118723: 7.4 volts |
| Current and Voltage Armature Air Gap: .075 inches |
| Current
Regulator Setting: 1118300: 42 amps; 1118723: 47
amps |
DELCO-REMY STARTING MOTOR SPECIFICATIONS
|
| Part number: 1107079 (rotates clockwise) |
| Bush Spring
Tension, Ounces: 24-28 |
| No Load
Test: 70
amps, 5.65 volts @ 5500 RPM |
| Torque
Test: 550 Amps, 3.25
volts, Torque, Lbs.Ft.: 11 |
WHEEL ALIGNMENT SPECIFICATIONS
|
Caster,
Degrees
Limits: -1/4
to - 1-1/4
Desired: - 3/4 |
Camber,
Degrees
Limits: -1/2
to +1/2
Desired: 0 |
| 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: 18-1/2
Inner Wheel: 20 |
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 |
