1975 CORVETTE

1975 CORVETTE

General Specifications

Chasis:

Wheelbase: 98"

Overall Length: 185.5"

Tire Size: GR70 x 15 inches

Body Data:

Sting Ray, 8 Cylinder:

2 Door Fastback Coupe, 2 Passenger, Series #Z; Body #37

Base Price: $7,117; Shipping Weight: 3,532 Pounds;

Production Total: 33,836

2 Door Convertible, 2 Passenger, Series #Z; Body #67

Base Price: $6,857; Shipping Weight: 3,532 Pounds;

Production Total: 5,829

8 Cylinder Engine Specifications:

165 HP Engine:

Engine Type: V-Type 8 Cylinder, Overhead Valve

Bore & Stroke: 4.00" x 3.48"

Engine Displacement: 350 Cu. In.

Compression Ratio: 8.5 to 1;

Taxable Horsepower: 51.23

Horsepower: 165 @ 3,800 RPM

Maximum Torque: 255 Ft Lbs @ 2,400 RPM

Normal Oil Pressure: 32-40 PSI

One, 4 Barrel Carburetor

205 HP Engine:

Engine Type: V-Type 8 Cylinder, Overhead Valve

Bore & Stroke: 4.00" x 3.48"

Engine Displacement: 350 Cu. In.

Compression Ratio: 9.0 to 1;

Taxable Horsepower: 51.23

Horsepower: 205 @ 4,800 RPM

Maximum Torque: 255 Ft Lbs @ 3,600 RPM

Normal Oil Pressure: 32-40 PSI

One, 4 Barrel Carburetor

Available Axle Ratios:

Not Available

1975 CORVETTE

Tune Up Specifications:

8 Cylinder 350 Cu. In. Engine:

Spark Plug: AC R44TX

Spark Plug Gap .060"

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

Ignition Timing: 6 Degrees BTDC on Damper

Engine Idle Speed:

Standard Transmission: 800 RPM

Automatic Transmission: 600 RPM in Drive

Valve Specifications:

8 Cylinder Engine, 350 Cu. In.:

Operating (Tappet) Clearance, Hot:

Intake: 1 Turn

Exhaust: 1 Turn

Valve Seat Angle:

Seat: 46 Degrees

Face 45 Degrees

Valve Spring Height Installed: 1.70"

Valve Spring Pressure: 200 Lbs. @ 1.25"

Valve Stem Clearance:

Intake .001"-.0027"

Exhaust .0012"-.0029"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

Pistons, Pins, Rings, Crankshaft, & Bearings Data:

8 Cylinder Engine, 350 Cu. In.:

Piston Clearance: .0007"-.0013"

Ring End Gap:

Compression:

Top Ring: .010"

Lower Ring: .013"

Oil: .015

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 2.099"-2.100"

Rod Bearing Clearance: .0013"-.0035"

Main Bearings:

Shaft Diameter:

#1, 2, 3, & 4: 2.4484"-2.4493"

#5: 2.4479"-2.4488"

Main Bearing Clearance:

#1: .0008"-.0020"

# 2, 3, & 4: .0011"-.0023"

#5, .0017"-.0033"

Thrust on Rear Bearing: #5

Crankshaft End Play: .002"-.006"

Capacities:

350 Cu. In. Engine:

Cooling System:

With Heater: 18 Quarts

With Air Conditioning: 18 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thermostat Opening Temperature: 180 Degrees

Fuel Tank: 18 Gallons

Engine Oil Refill: 5 Quarts with New Filter

Transmission Oil:

4 Speed Manual: 3 Pints

Automatic Transmission:

Refill: 4 Quarts

THM 250 & THM 350:

Total Capacity: 10 Quarts

THM 400:

Total Capacity: 11 Quarts

Rear Axle: 4 Pints

Engine Tightening Specifications:

350 Cu. In. 8 Cylinder:

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 Lbs.

Connecting Rod Cap Bolts: 45 Ft. Lbs.

Main Bearing Cap Bolts: 70 Ft. Lbs.

Outer Bolts on Engines with 4 Bolt Caps: 65 Ft. Lbs.

Flywheel to Crankshaft: 60 Ft. Lbs

Vibration Damper: 60 Ft. Lbs.

Alternators:

8 Cylinder Engine:

#1100544

Rated Hot Output: 61 Amperes

Field Current @ 12 Volts, 80 Degrees: 4.0-4.5 Volts

Output @ 14 Volts, 5,000 RPM: 55 Amperes

Voltage Regulator: Integral

#1100950

Rated Hot Output: 42 Amperes

Field Current @ 12 Volts, 80 Degrees: 4.0-4.5 Volts

Output @ 14 Volts, 5,000 RPM: 37 Amperes

Voltage Regulator: Integral

#1102474

Rated Hot Output: 61 Amperes

Field Current @ 12 Volts, 80 Degrees: 4.0-4.5 Volts

Output @ 14 Volts, 5,000 RPM: 57 Amperes

Voltage Regulator: Integral

#1102484

Rated Hot Output: 42 Amperes

Field Current @ 12 Volts, 80 Degrees: 4.0-4.5 Volts

Output @ 14 Volts, 5,000 RPM: 38 Amperes

Voltage Regulator: Integral

Distributors:

8 Cylinder Engine:

#1112880

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 600 RPM

Intermediate Advance: 6 Degrees @ 1,000 RPM

Full Advance: 11 Degrees @ 2,100 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 4"

Maximum Vacuum Advance: 9 Degrees @ 12" Vacuum

#1112883

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 550 RPM

Intermediate Advance: 6 Degrees @ 800 RPM

Intermediate Advance: 8 Degrees @ 1,200 RPM

Full Advance: 11 Degrees @ 2,300 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 4"

Maximum Vacuum Advance: 7-1/2 Degrees @ 10" Vacuum

#1112888

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 550 RPM

Intermediate Advance: 6 Degrees @ 800 RPM

Full Advance: 8 Degrees @ 2,100 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 4"

Maximum Vacuum Advance: 9 Degrees @ 12" Vacuum

Starting Motors:

8 Cylinder, 350 Cu. In. Engine:

#1108430, 1108776, 1108418, 1108775

No Load Test: 65-95 Amps, 9 Volts @ 7,500-10,500 RPM

Brake Specifications:

Wheel Cylinder Bore:

Disk Brake:

Front 1-7/8"

Rear: 1-3/8"

Master Cylinder Bore:

Manual Disc Brakes: 1"

Power Disc Brakes: 1-1/8"

Rear Axle Specifications:

Carrier Type: Integral

Ring Gear & Pinion Backlash:

Method: Check with Dial Gauge

Adjustment: .005"-.008"

Pinion Bearing Preload:

Method: Spacer

New Bearing Adjustment: 20-25 Inch Lbs.

Used Bearing Adjustment: 5-10 Inch Lbs.

Differential Bearing Preload:

Method: Shims

New Bearing Adjustment: .010"

Used Bearing Adjustment: .010"

Wheel Alignment Specifictions:

Manual Steering:

Caster: + 1 Degrees

Camber: 3/4 Degrees

Toe In: 3/16 to 5/16""

Power Steering:

Caster: + 2-/14 Degrees

Camber: 3/4 Degrees

Toe In: 3/16 to 5/16""

Rear Wheel Alignment:

Camber: -1/2 Degrees

Toe In: 0" to 3/16"

Carburetor Types:

8 Cylinder Engines:

Rochester Quadrajet M4M:

Carburetor #7045210

Float Level: 15/32"

Pump Rod:

Hole: Inner

Adjustment: 9/32"

Fast Idle, Bench Adjustment: 3 Turns

Choke Coil Lever: .120"

Choke Rod: .300"

Vacuum Break:

Front: .180"

Rear: .170"

Air Valve Dashpot: .015"

Choke Setting: Index

Choke Unloader: .325"

Air Valve Valve Spring Wind-Up: 7/8"

Rochester Quadrajet M4M:

Carburetor #7045211

Float Level: 15/32"

Pump Rod:

Hole: Inner

Adjustment: 9/32"

Fast Idle, Bench Adjustment: 3 Turns

Choke Coil Lever: .120"

Choke Rod: .300"

Vacuum Break:

Front: .180"

Rear: .170"

Air Valve Dashpot: .015"

Choke Setting: 2 Lean

Choke Unloader: .325"

Air Valve Valve Spring Wind-Up: 7/8"

Rochester Quadrajet M4M:

Carburetor #7045222

Float Level: 15/32"

Pump Rod:

Hole: Inner

Adjustment: 9/32"

Fast Idle, Bench Adjustment: 3 Turns

Choke Coil Lever: .120"

Choke Rod: .300"

Vacuum Break:

Front: .180"

Rear: .170"

Air Valve Dashpot: .015"

Choke Setting: Index

Choke Unloader: .325"

Air Valve Valve Spring Wind-Up: 7/8"

Rochester Quadrajet M4M:

Carburetor #7045223

Float Level: 15/32"

Pump Rod:

Hole: Inner

Adjustment: 9/32"

Fast Idle, Bench Adjustment: 3 Turns

Choke Coil Lever: .120"

Choke Rod: .300"

Vacuum Break:

Front: .180"

Rear: .170"

Air Valve Dashpot: .015"

Choke Setting: 2 Lean

Choke Unloader: .325"

Air Valve Valve Spring Wind-Up: 7/8"

VIN Numbers:

1Z67J5S400001 - 1Z67J5S438465

1Z37J5S400001 - 1Z37J5S438465

Popular Options:

Power Brakes; Power Steering; Custom Interior; Power Windows; Map Light; Custom Shoulder Belts; Detachable Hardtop; Vinyl Roof Covering for Detachable Hardtop; Rear Window Defroster; Tilt & Telescopic Steering Wheel; Custom Wheel Covers; Cast Aluminum Wheels; AM-FM Stereo Radio; AM-FM Radio; Heavy Duty Battery; Automatic Transmission; Gymkhana Suspension; Off Road Suspension & Brake Package; Dual Horns; Engine Options.

Paint Colors:

Code Color

10 Classic White

13 Silver

22 Bright Blue

27 Steel Blue

42 Bright Green

56 BrightYellow

67 Medium Saddle

70 Orange

74 Dark Red

76 Mille Migiia Red

1975 Corvette Promotional Model Cars Available:

Plastic: Corvette Sting Ray Coupe

1975 Corvette Historical Data:

1975 Corvette model year introduction date was in September 1974.

Model Year Production: 38,465 Cars