GENERAL SPECIFICATIONS
|
| Model Designation:
Biscayne, Bel Air, Impala and Station Wagons (all engines available) |
| Wheel base: 119 |
| Valve Location: In
head |
| Bore and
Stroke: 3.562 x 3.94 |
| Piston displacement, Cubic
Inches: 235 |
| Compression
ratio: 8.25 |
| Maximum
Brake Horsepower: 135
@ 4000 RPM |
| Maximum
Torque Lbs.Ft. @ RPM: 217
@ 2000 RPM |
| Normal
Oil Pressure Pounds: 35 |
TUNE UP SPECIFICATIONS (all models) |
| Spark Plug
Make: AC 44 |
| Spark Plug
Gap, Inch: .035 |
| Firing
Order: 153624 |
| Timing
Mark: First short vertical line on flywheel clockwise from timing ball: Location: Flywheel |
| Engine
Idle Speed, RPM: 425 |
| Compression
Pressure & Cranking Speed: 130 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: 7-18 |
Ring End
Gap: In tapered bores,
fit rings in tightest portion of ring travel
Compression: .007
Oil: .015 |
| Wristpin
Diameter, Inch: .8662 |
VALVE SPECIFICATIONS
|
Operating
Clearance:
Intake:
0 Exhaust: 0 |
| Valve Seat
Angle, degrees: Intake: 31; Exhaust: 46 |
Valve Timing: (BTDC
= before top dead center; ATDC = after top dead
center)
Intake
opens: 16 BTDC
Exhaust
Closes: 17-1/2 ATDC |
Valve Spring
Pressure Pounds at Inches Length:
Inner
Spring: 158 @ 1.52 |
| Valve Lift Zero Lash: Intake: .3275 Exhaust: .3275 |
| Valve Stem
Clearance: Intake: .0001-.0027; Exhaust:
.001-.0027 |
| Valve Stem Diameter: Intake: .3410-.3417 Exhause: .3410-.3417 |
ENGINE BEARING SPECIFICATIONS
|
Connecting Rod Bearings:
Journal
Diameter, Inches: 2.311-2.312
Bearing Clearance, Inch: .0007-.0027 |
Main Bearings:
Journal
Diameter, Inches:
Number 1: 2.6835-2.6845
Number 2: 2.7145-2.7155
Number 3: 2.7455-2.7465
Number 4: 2.7765-2.7775
Bearing clearance: .001-.003
Shaft End Play: .003-.009 (Thrust
on Bearing 3)
|
| Engine Tightening Specs (ft./lbs.) |
| Spark Plugs: 25 |
| Cylinder Head Bolts: 90-95 |
| Intake Manifold: 25-35 |
| Exhaust Manifold: End clamp bolts: 15-20; Center clamp bolts: 25-30 |
| Rocker Arm Shaft Bracket: 20-25 |
| Rocker Arm Covers: 25 (inch/lbs) |
| Connecting Rod Cap Bolts: 35-45 |
| Main Bearing Cap Bolts: 100-110 |
| Flywheel to Crankshaft: 55-65 |
| Vibration Damper or Pulley: Pressed on |
CAPACITY DATA
|
Cooling
System:
Without
heater: 17 quarts
With heater: 18 quarts |
| Fuel Tank: 20 gallons; 18 gallons on 9 passenger Station Wagon, 17 gallons on 6 passenger Station Wagon. |
| Engine
Oil: 5 quarts + 1 quart for filter change |
| Transmission: Standard: 2 pints; w/overdrive: 3 pints; Automatic: 3-1/2 quarts; 4 speed trans: 1-1/2 pints |
| Rear Axle: 4
pints |
|
DISTRIBUTOR SPECIFICATIONS
|
| Distributor part number: 1112403
(distributor rotates counter-clockwise) |
| Cam Angle,
degrees: 28-35 |
| Breaker Point opening, Inch: .016 |
| Condenser
Capacity: .18-.23
Mfds. |
| Breaker Arm Spring Tension: 19-23
Oz. |
Centrifugal Advance: (degrees
at RPM of distributor)
Advance starts: 1 @ 375 RPM
Full Advance: 13 @ 1750 RPM
Inches of Vacuum to Start Plunger Movement: 4-6
Inches of Vacuum for Full Plunger Movement: 15-16
Maximum Vacuum Advance Dist., Degrees: 11
|
| GENERATOR SPECIFICATIONS
|
| Generator
Number: 1102096
(generator rotates clockwise, 12 volts, Negative
Ground) |
Generator
output: 30 amps @ 2240 RPM
|
| Brush Spring
Tension: 28 oz. |
| REGULATOR SPECIFICATIONS
|
| Regulator
Number: 1119001 |
Cutout
Relay:
Voltage
to close points: 12.6
Armature Air Gap: .020 |
| Voltage
Regulator Setting: 14.3
volts |
| Current and Voltage Armature Air Gap: .075 inches |
| Current
Regulator Setting: 30
amps |
| STARTING
MOTOR SPECIFICATIONS
|
| Part number: 1107652 (rotates clockwise) |
| Bush Spring
Tension, Ounces: 35 |
| No Load
Test: 49-76
amps, 10.6 volts @ 6200-9400 RPM |
| Torque
Test: 270-310 Amps, 4.25
volts; 10-1/2 ft.lbs torque |
WHEEL ALIGNMENT SPECIFICATIONS
|
Caster,
Degrees
Limits: -1/2 to +1/2
Desired: 0 |
Camber,
Degrees
Limits: 0 to +1
Desired: +1/2 |
| Toe-In,
Inches: 1/16 to 1/8 |
Toe-Out
on Turns, Degrees: (If
toe-out is incorrect, when other adjustments are
correct, look for bent steering arms.)
Outer wheel: 17 degrees 54'
Inner Wheel: 20 |
Steering Axis Degrees: (If
spindle support angle is incorrect,
but camber is correct, look for bent suspension
arms or steering knuckle support)
7 degrees 11' |
