1975 CHEVROLET MONZA

1975 CHEVROLET MONZA

Model Designations:

Chevrolet Monza 'S', Series 1M, 4 & 8 Cylinder

Chevrolet Monza (2 + 2), Series 1R, 4 & 8 Cylinder

Chevrolet Monza 'S', Body Styles:

2 Door Town Coupe, 4 Passenger, Body #1M27

Base Price: $3,570; Shipping Weight: 2,675 Pounds

Production Total: N/A

2 Door Hatchback Coupe, 4 Passenger, Body #1M07

Base Price: $3,648; Shipping Weight: N/A

Production Total: N/A

Chevrolet Monza (2 + 2), Body Styles:

2 Door Hatchback 2 + 2 Coupe, 4 Passenger, Body #1R07

Base Price: $3,953; Shipping Weight: 2,753 Pounds

Production Total: N/A

Total Monza Production: 66,615

4 Cylinder: 41,658

8 Cylinder: 24,957

General Specifications:

Wheelbase:

All Styles: 97"

Overall Length:

Monza Town Coupe: 177.8"

Monza Hatchback: 179.3"

Tire Sizes:

All Styles: BR78 X 13"

Engine Specifications, 140 Cu. In., 4 Cylinder, 78 HP:

Engine Type: In-Line 4 Cylinder, Overhead Cam

Bore & Stroke: 3.501" X 3.625"

Engine Displacement: 140 Cu. In.

Compresssion Ratio: 8.00 to 1

Taxable Horsepower: 19.6

Horsepower: 78 @ 4,200 RPM

Torque: 120 Ft. Lbs. @ 2,000 RPM

Normal Oil Pressure: 27-45 PSI

Carburetor: 1 Barrel

Engine Specifications, 140 Cu. In., 4 Cylinder, 80 HP:

Engine Type: In-Line 4 Cylinder, Overhead Cam

Bore & Stroke: 3.501" X 3.625"

Engine Displacement: 140 Cu. In.

Compresssion Ratio: 8.00 to 1

Taxable Horsepower: 19.6

Horsepower: 80 @ 4,000 RPM

Torque: 116 Ft. Lbs. @ 2,800 RPM

Normal Oil Pressure: 27-45 PSI

Carburetor: 2 Barrel

Engine Specifications, 140 Cu. In., 4 Cylinder, 87 HP:

Engine Type: In-Line 4 Cylinder, Overhead Cam

Bore & Stroke: 3.501" X 3.625"

Engine Displacement: 140 Cu. In.

Compresssion Ratio: 8.00 to 1

Taxable Horsepower: 19.6

Horsepower: 87 @ 4,400 RPM

Torque: 122 Ft. Lbs. @ 2,800 RPM

Normal Oil Pressure: 27-45 PSI

Carburetor: 2 Barrel

8 Cylinder Engine-262 Cu. In., 110 HP:

Bore & Stroke: 3.671" X 3.10"

Engine Displacement: 262 Cu. In.

Compression Ratio: 8.50:1

Taxable Horsepower: 43.22

Horsepower: 110 @ 3,600 RPM

Torque: 200 Ft. Lbs @ 2,000 RPM

Normal Oil Pressure: 32-40 Lbs/Sq. In.

Carburetor: 2 Barrel

8 Cylinder Engine-350 Cu. In., 125 HP:

Bore & Stroke: 4.00" X 3.48"

Engine Displacement: 305 Cu. In.

Compression Ratio: 8.50:1

Taxable Horsepower: 51.20

Horsepower: 125 @ 3,600 RPM

Torque: 235 Ft. Lbs @ 2,000 RPM

Normal Oil Pressure: 32-40 Lbs/Sq. In.

Carburetor: 2 Barrel

Capacities:

4 Cylinder, 140 Cu. In. Engine:

Cooling System:

With Heater: 8 Quarts

With Air Conditioning: 8 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thrermostat Opening: 195 Degrees

Fuel Tank: 18-1/2 Gallons

Engine Oil Refill: 4 Quarts, with Filter

Transmission Oil:

3 Speed: 2.4 Pints

4 Speed: 2.4 Pints

Automatic Transmission:

Refill: 3 Quarts

Total Capacity: 10 Quarts

Rear Axle: 2-1/4 Pints

8 Cylinder, 262 & 350 Cu. In. Engines:

Cooling System:

With Heater: 18 Quarts

With Air Conditioning: 18 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thrermostat Opening: 195 Degrees

Fuel Tank: 18-1/2 Gallons

Engine Oil Refill: 5 Quarts, with Filter

Transmission Oil:

3 Speed: 2.4 Pints

4 Speed: 2.4 Pints

5 Speed: 3.5 Pints

Automatic Transmission:

Refill: 3 Quarts

Total Capacity: 10 Quarts

Rear Axle: 2-314 Pints

Tune Up Specifications, 4 Cylinder, 1 Barrel Carburetor Engine:

Spark Plug Type: AC R43T5X

Spark Plug: Gap .060"

Firing Order: 1-3-4-2

Ignition Timing:

Standard Transmission: 8 Degrees BTDC on Pulley

Automatic Transmission: 10 Degrees BTDC on Pulley

Engine Idle Speed:

Standard Transmission: 700 RPM

Automatic Transmission: 550 RPM, in Drive, 750 RPM w/AC Solenoid Energized

Fast Idle Speed:

Standard Transmission: 2,000 RPM

Automatic Transmission: 2,200 RPM

Fuel Pump Pressure: 3 to 4-1/2 PSI

Tune Up Specifications, 4 Cylinder, 2 Barrel Carburetor Engine:

Spark Plug Type: AC R43T5X

Spark Plug: Gap .060"

Firing Order: 1-3-4-2

Ignition Timing:

Standard Transmission: 10 Degrees BTDC on Pulley

Automatic Transmission: 12 Degrees BTDC on Pulley

Engine Idle Speed:

Standard Transmission: 700 RPM

Automatic Transmission: 600 RPM in Drive; 750 RPM, in Drive w/AC Solenoid Energized

Fast Idle Speed:

Standard Transmission: 1,600 RPM

Automatic Transmission: 1,600 RPM

Fuel Pump Pressure: 3 to 4-1/2 PSI

Tune Up Specifications, 8 Cylinder, 262 Cu. In. Engine:

Spark Plug Type: AC R44YX

Spark Plug: Gap .060"

Firing Order: 1-8-4-3-6-5-7-2

Ignition Timing:

Standard Transmission: 8 Degrees BTDC on Pulley

Automatic Transmission: 8 Degrees BTDC on Pulley

Curb Idle Speed:

Standard Transmission: 800 RPM

Automatic Transmission: 600 RPM, in Drive

Fuel Pump Pressure: 7 to 8-1/2 PSI

Tune Up Specifications, 8 Cylinder, 350 Cu. In. Engine:

Spark Plug Type: AC R44TX

Spark Plug: Gap .060"

Firing Order: 1-8-4-3-6-5-7-2

Ignition Timing:

Automatic Transmission: 6 Degrees BTDC on Pulley

Curb Idle Speed:

Automatic Transmission: 600 RPM, in Drive; 650 RPM w/AC Solenoid Energized

Fuel Pump Pressure: 7 to 8-1/2 PSI

Valve Specifications, 4 Cylinder, 140 Cu. In. Engine:

Valve Lash (Cold):

Intake: .015"

Exhaust: .030"

Valve Angles:

Seat: 46 Degrees

Face: 45 Degrees

Valve Spring Height: 1.75"

Valve Spring Pressure:

Intake: 190 Lbs @ 1.31 inches

Exhaust: 186 Lbs. @ 1.29 inches

Valve Stem Clearance: Intake .001"-.0027"

Exhaust .001"-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

Valve Specifications, 8 Cylinder, 262 Cu. In. Engine:

Valve Lash: 3/4 Turn

Valve Angles:

Seat: 46 Degrees

Face: 45 Degrees

Valve Spring Height:

Intake: 1.70"

Exhaust: 1.61"

Valve Spring Pressure:

Intake: 200 Lbs @ 1.25 inches

Exhaust: 189 Lbs. @ 1.20 inches

Valve Stem Clearance: Intake .001"-.0027"

Exhaust .001"-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

Valve Specifications, 8 Cylinder, 350 Cu. In. Engine:

Valve Lash: 3/4 Turn

Valve Angles:

Seat: 46 Degrees

Face: 45 Degrees

Valve Spring Height: 1.70"

Valve Spring Pressure: 200 Lbs @ 1.25 inches

Valve Stem Clearance:

Intake: .001"-.0027"

Exhaust: .0012"-.0029"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

Pistons, Pins, Rings, Crankshaft & Bearings Data, 4 Cylinder, 140 Cu. In. Engine:

Piston Clearance: .0018"-.0028"

Piston Rings:

Ring End Gap:

Compression:

Top Ring: .015"

Lower Ring: .009"

Oil: .010"

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 1.999"-2.000"

Rod Bearing Clearance: .0007"-.0038"

Main Bearings:

Shaft Diameter: 2.2983"-2.2993"

Main Bearing Clearance:

#1: .0003"-.0019"

#2, 3, 4, 5: .0003"-.0027"

Thrust on Bearing #4

Crankshaft End Play: .002"-.007"

Pistons, Pins, Rings, Crankshaft & Bearings Data, 8 Cylinder, 262 Cu. In. Engine:

Piston Clearance: .0007"-.0013"

Piston Rings:

Ring End Gap:

Compression:

#1: .010"

#2: .013"

Oil: .015"

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 1.999"-2.000"

Rod Bearing Clearance: .0007"-.0038"

Main Bearings:

Shaft Diameter: 2.2983"-2.2993"

Main Bearing Clearance:

#1: .0003"-.0020"

#2, 3, 4, 5: .0003"-.0027"

Thrust on Bearing #5

Crankshaft End Play: .002"-.007"

Pistons, Pins, Rings, Crankshaft & Bearings Data, 8 Cylinder, 350 Cu. In. Engine:

Piston Clearance: .0007"-.0013"

Piston Rings:

Ring End Gap:

Compression:

#1: .010"

#2: .013"

Oil: .015"

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 2.098"-2.099"

Rod Bearing Clearance: .0013"-.0035"

Main Bearings:

Shaft Diameter:

#1: 2.4484"-2.4493"

#2, 3, 4: 2.4481"-2.4490"

#5: 2.4479"-2.4488"

Main Bearing Clearance:

#1, 2, 3, 4: .0013"-.0025"

#5: .0017"-.0032"

Thrust on Bearing #5

Crankshaft End Play: .002"-.007"

Engine Tightening Specifications, 140 Cu. In. Engine:

Spark Plugs: 20 Ft. Lbs.

Cylinder Head Bolts: 60 Ft. Lbs.

Intake Manifold: 30 Ft. Lbs.

Exhaust Manifold: 30 Ft. Lbs.

Cam Cover: 35 Inch Lbs.

Connecting Rod Cap Bolts: 35 Ft. Lbs.

Main Bearing Cap Bolts: 65 Ft. Lbs.

Flywheel to Crankshaft: 60 Ft. Lbs.

Vibration Damper or Pulley: Pulley to Damper Screws: 80 Ft. Lbs.

Engine Tightening Specifications, 262 & 350 Cu. In. 8 Cylinder Engines:

Spark Plugs: 15 Ft. Lbs.

Cylinder Head Bolts: 65 Ft. Lbs.

Intake Manifold: 30 Ft. Lbs.

Exhaust Manifold:

Outside Bolts: 20 Ft. Lbs.

Inside Bolts: 30 Ft. Lbs.

Rocker Arm Cover: 45 Inch Pounds

Connecting Rod Cap Bolts: 45 Ft. Lbs.

Main Bearing Cap Bolts: 70 Ft. Lbs.

Flywheel to Crankshaft: 60 Ft. Lbs.

Vibration Damper or Pulley: Pulley to Damper Screws: 60 Ft. Lbs.

Rear Axle Specifications:

Carrier Type: Integral

Ring Gear & Pinion Backlash:

Method: Shims

Adjustment: .005"-.008"

Pinion Bearing Preload:

Method: Spacer

New Bearings: 10-25 Inch Lbs.

Used Bearings: 8-12 Inch Lbs.

Differential Bearing Preload:

Method: Shims

Brake Specifications:

Brake Drum Diameter: 9.00"

Wheel Cylinder Bore:

Front Disc Brakes: 1-7/8"

Rear: 3/4"

Master Cylinder Bore:

Disc Brakes: 3/4"

Power Brakes: 3/4"

Wheel Alignment Specifications:

Caster: -3/4 Degree

Camber:

Left: +1/4 Degrees

Right: +1/4 Degrees

Toe In: 0"-1/8"

Alternator Specifications:

Model: 1100545

Rated Hot Output: 32 Amperes