C3 --
Corvette Overview --
1975 Specifications
THE C3 CORVETTE - SPECIFICATIONS
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1974 Corvette Specifications
1976 Corvette Specifications
MODEL: 1975 Chevrolet CorvetteBODY STYLE: Two-door convertible/coupe, front engine, rear wheel drive
MANUFACTURING LOCATION: St. Louis, Missouri
VEHICLE NUMBERS (Also known as VIN Numbers): 1Z37J5S400001 - 1Z37J5S438465
CONSTRUCTION: Uniconstruction: fiberglass reinforced plastic (FRP or "fiberglass") body, backboned by a steel cage outlining the passenger compartment. Principal members - underbody, front and rear end assemblies, dash panel and hinge pillars are bonded, riveted, or bolted together and to each other. Hood is plastic with bonded plastic reinforcement. Coupe: two removable roof panels and removable rear window. Frame: all welded, full length, ladder construction with 5 crossmembers. Side Rails and intermediate crossmembers box section; front crossmember box girder section. Eight body-mounting points.
OCT., 1974: 402385
NOV.. 1974: 406180
DEC., 1974: 409190
JAN., 1975: 413159
FEB., 1975: 417112
MAR., 1975: 420856
APR., 1975: 425228
MAY, 1975: 429379
JUN., 1975: 433474
JUL, 1975: 438465
PRODUCTION CUTOFF NUMBERS (ENDING VEHICLE):
CHA: 350 CUBIC INCH, 165 HORSEPOWER, MANUAL TRANSMISSION
CHB: 350 CUBIC INCH, 165 HORSEPOWER, AUTOMATIC TRANSMISSION
CHC: 350 CUBIC INCH, 205 HORSEPOWER, MANUAL TRANSMISSION
CHR: 350 CUBIC INCH, 205 HORSEPOWER, AUTOMATIC TRANSMISSION, CALIFORNIA EMISSIONS
CHU: 350 CUBIC INCH, 165 HORSEPOWER, MANUAL TRANSMISSION
CHZ: 350 CUBIC INCH, 165 HORSEPOWER, AUTOMATIC TRANSMISSION, CALIFORNIA EMISSIONS
CKC: 350 CUBIC INCH, 205 HORSEPOWER, AUTOMATIC TRANSMISSION
CRJ: 350 CUBIC INCH, 165 HORSEPOWER, MANUAL TRANSMISSION
CRK: 350 CUBIC INCH, 165 HORSEPOWER, AUTOMATIC TRANSMISSION
CRL: 350 CUBIC INCH, 205 HORSEPOWER, MANUAL TRANSMISSION
CRM: 350 CUBIC INCH, 205 HORSEPOWER, AUTOMATIC TRANSMISSION
CUA: 350 CUBIC INCH, 165 HORSEPOWER, MANUAL TRANSMISSION
CUB: 350 CUBIC INCH, 165 HORSEPOWER, MANUAL TRANSMISSION
CUD: 350 CUBIC INCH, 205 HORSEPOWER, MANUAL TRANSMISSION
CUB: 350 CUBIC INCH, 205 HORSEPOWER, MANUAL TRANSMISSION
ENGINE SUFFIX:
ENGINE BLOCK NUMBER:
3970010: 350 CUBIC INCH, 165 HP, 205HP
333882: 350 CUBIC INCH, 165HP, 205HP
HEAD NUMBER:
ROCHESTER Q-jet #7045210: 350 CUBIC INCH, 205HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7045211: 350 CUBIC INCH, 205HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7045222: 350 CUBIC INCH, 165HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7045223: 350 CUBIC INCH, 165HP, MANUAL TRANSMISSION
1112880: 350 CUBIC INCH, 165HP, CALIFORNIA EMISSIONS
1112883: 350 CUBIC INCH, 205HP
1112888: 350 CUBIC INCH, 165HP
1112979: 350 CUBIC INCH, 205HP
CARBURETOR NUMBER:
1100544: 350 CUBIC INCH, AIR CONDITIONING
1102474: 350 CUBIC INCH, AIR CONDITIONING
1100950: 350 CUBIC INCH, WITHOUT AIR CONDITIONING
1100597: 350 CUBIC INCH, HEAVY DUTY BATTERY
1102487: 350 CUBIC INCH, HEAVY DUTY BATTERY
1102484: 350 CUBIC INCH, WITHOUT AIR CONDITIONING
ALTERNATOR:
AA: 3.55:1 RATIO
AB: 3.70:1 RATIO
AC: 4.11:1 RATIO
AY: 2.73:1 RATIO
AW: 3.08:1 RATIO
AX: 3.36:1 RATIO
LR: 3.36:1 RATIO
AXLE IDENTIFICATION:
DISTRIBUTOR NUMBER:
1975 CORVETTE FACTORY OPTIONS
CODE:
1YZ37
1YZ67
---
A31
A85
C07
C08
C50
C60
FE7
---
J50
L82
M21
M40
N37
N41
QRM
QRZ
U05
U58
U69
UA1
UF1
YF5
Z07
DESCRIPTION:
Base Corvette Sport Coupe
Base Corvette Convertible
Custom Interior Trim
Power Windows
Custom Shoulder Belts (std with coupe)
Auxiliary Hardtop (for convertible)
Vinyl Covered Auxiliary Hardtop
Rear Window Defogger
Air Conditioning
Gymkhana Suspension
Optional Rear Axle Ratios
Power Brakes
350ci, 205hp Engine
4-Speed Manual Transmission, close-ratio
Turbo-Hydro-matic Automatic Transmission
Tilt-Telescopic Steering Column
Power Steering
White Stripe Steel Belted Tires, GR70x15
White Letter Steel Belted Tires, GR70x15
Dual Horns
AM-FM Radio, Stereo
AM-FM Radio
Heavy Duty Battery
Map Light (on rearview mirror)
California Emission Test
Off Road Suspension and Brake Package
QUANTITY:
33,836
4629
---
28,745
646
2,407
279
13,760
31,914
3,194
1,969
35,842
2,372
1,057
28,473
31,830
37,591
5,233
30,407
22,011
24,701
12,902
16,778
21,676
3,037
144
RETAIL PRICE:
$6,810.10
$6,550.10
$154.00
$93.00
$41.00
$267.00
$350.00
$46.00
$490.00
$7.00
$12.00
$50.00
$336.00
$0.00
$0.00
$82.00
$129.00
$35.00
$48.00
$4.00
$284.00
$178.00
$15.00
$5.00
$20.00
$400.00
COLOR CODES:
CODE
10
13
22
27
42
56
67
70
74
76
EXTERIOR
Classic White
Silver
Bright Blue
Steel Blue
Bright Green
Bright Yellow
Medium Saddlet
Orange Flame
Dark Red
Mille Miglia Red
SOFT TOP
Black, White
Black, White
Black, White
Black, White
Black, White
Black, White
Black, White
Black, White
Black, White
Black, White
INTERIOR
Black, Dark Blue, Dark Red, Medium Saddle, Neutral, Silver
Black, Dark Blue, Dark Red, Medium Saddle, Silver
Black, Dark Blue, Silver
Black, Dark Blue, Silver
Black, Medium Saddle, Neutral, Silver
Black, Medium Saddle, Neutral
Black, Medium Saddle, Neutral
Black, Medium Saddle, Neutral
Black, Dark Red, Medium Saddle, Neutral, Silver
Black, Dark Red, Medium Saddle, Neutral, Silver
WHEELS
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
INTERIOR COLOR CODES (VINYL):
Black (Vinyl)
Silver (Vinyl)
Dark Blue (Vinyl)
Light Neutral (Vinyl)
Medium Saddle (Vinyl)
Dark Oxblood Red (Vinyl)
19
14
26
60
65
73
INTERIOR COLOR CODES (LEATHER):
Black (Leather)
Silver (Leather)
Dark Blue (Leather)
Medium Saddle (Leather)
Dark Oxblood Red (Leather)
192
142
262
652
732
QTY.
8,007
4,710
2,869
1,268
1,664
2,883
3,403
3,030
3,342
3,355
Silver
SilverSilverSilver
Silver
Medium Saddlet
Medium SaddletMedium SaddletMedium Saddlet
Medium Saddlet
EXTERIOR COLOR TEMPLATE:
Classic White
Dark Red
Silver
Bright
Blue
Steel
Blue
Mille Miglie
Red
Orange
Flame
Medium
Saddlet
INTERIOR COLOR TEMPLATE:
Black
BlackBlackBlack
Black
Black
Steel Bllue
Steel BllueSteel BllueSteel Bllue
Steel Bllue
Bright Blue
Bright BlueBright BlueBright Blue
Bright Blue
Classic White
Classic WhiteClassic WhiteClassic White
Classic White
Mille Miglie Red
Mille Miglie RedMille Miglie RedMille Miglie Red
Mille Miglie Red
Orange Flame
Orange FlameOrange FlameOrange Flame
Orange Flame
Saddle
Saddle
SaddleSaddleSaddle
Saddle
Dark Red
Dark RedDark RedDark Red
Dark Red
Dark Red
Dark RedDark RedDark Red
Dark Red
Dark Red
Bright Yellow
Bright YellowBright YellowBright Yellow
Bright Yellow
Bright Yellow
Dark
Blue
Dark Blue
Dark BlueDark BlueDark Blue
Dark Blue
Bright
Green
Bright Green
Bright GreenBright GreenBright Green
Bright Green
Neutral
Neutral
NeutralNeutralNeutral
Neutral
Standard Seats
Standard Wheels
1975 Corvette Wheels
1975 Corvette Seats
Silver
Silver
SilverSilverSilver
Silver
Engine:
Order Code:
Engine Manufacturing Location
Type:
Number of Cylinders
Displacement (cid):
Fuel induction system:
Horsepower (net hp @ rpm):
Torque (net lbs.-ft. @ rpm)
Valves per cylinder:
Bore x stroke (in.):
Redline (rpm):
Compression ratio:
Valve Lifters
Total Dressed Engine Weight Dry:
Automatic
Manual
Firing Order:
Cylinder Number System;
Left Bank:
Right Bank:
Recommended Fuel:
EPA - Automatic Transmission
City (mpg):
Highway (mpg):
Max cruising range (miles):
EPA - Manual Transmission
City (mpg):
Highway (mpg):
Max cruising range (miles):
Standard
Flint, Michigan
90 degree V, Overhead Valve
8
350
4-Barrel Carburetor
165 @ 4,400
255 @ 2,400

4.00 x 3.48
---
8.5:1
Hydraulic

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1-8-4-3-6-5-7-2

1-3-5-7
2-4-6-8
Premium

12
15
270 (approx.)

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CORVETTE POWERTRAIN SPECIFICATIONS:
L82
Flint, Michigan
90 degree V, Overhead Valve
8
350
4-Barrel Carburetor
205 @ 4,800
255 @ 3,600

4.00 x 3.48
---
9.0:1
Hydraulic

---
---
1-8-4-3-6-5-7-2

1-3-5-7
2-4-6-8
Premium

---
---
---

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TURBO HYDRA-MATIC AUTOMATIC TRANSMISSION (RPO M40) GEAR RATIOS:

1st Gear:
2nd Gear:
3rd Gear:
Reverse:
MANUAL TRANSMISSION / GEAR RATIOS:

1st Gear:
2nd Gear:
3rd Gear:
4th Gear:
Reverse:
4-Speed (RPO M20)
2.64:1
1.75:1
1.33:1
1.00:1
2.55:1
Drive:
2.48:1
1.48:1
1.00:1
N/A
Manual Clutch:
  Type
  Effective plate load (lbs.)
  Total Affective Area (sq. in.)
Single dry disk, semi-centrifugal
2450 - 2750
123.7
4-Speed Close Ratio (RPO M21)
2.43:1
1.61:1
1.23:1
1.00:1
2.35:1
L2:
2.48:1
1.48:1
N/A
N/A
L1:
2.48:1
N/A
N/A
N/A
Reverse:
N/A
N/A
N/A
2.08
SUSPENSION - FRONT:
Type and Description:  Independent, SLA type, coil springs with center mounted shock absorbers, spherical joint steering knuckle pivots.

Front Stabilizer Bar:
  Type
  Material
  Diameter
SUSPENSION - REAR:
Type and Description: Full Independent rear suspension with frame-anchored differential unit. Position of each wheel established by three links: tubular axle drive shafts, transverse strut rods, torque control arms. Vertical suspension loads taken by transverse leaf springs. Built-in camber adjustment at strut rod inner ends.

Rear Leaf Springs:
  Number of leaves
  Material
  Length, width, height
Variable rate 9-leaf
Chrome carbon steel
48.60 x 2.25 x 2.121
Link
Hot rolled steel
.875
EXTERIOR DIMENSIONS:
Wheelbase:
Overall Length:
Total Body Width:
Overall Height:

98.0 Inches
185.2 Inches
69.0 Inches
48.1 Inches
INTERIOR DIMENSIONS
Headroom:
Shoulder Room:
Hip Room:
Leg Room:
36.0 Inches
47.9 Inches
48.8 Inches
42.1 Inches
Hardtop
Track Width, Front:
Track Width, Rear:
Min. Ground Clearance:
58.7 Inches
59.5 Inches
4.3 Inches
EXTERIOR DIMENSIONS:
Wheelbase:
Overall Length:
Total Body Width:
Overall Height:
98.0 Inches
185.2 Inches
69.0 Inches
48.1 Inches
INTERIOR DIMENSIONS
Headroom:
Shoulder Room:
Hip Room:
Leg Room:
36.2 Inches
47.9 Inches
48.8 Inches
42.1 Inches
Coupe
Track Width, Front:
Track Width, Rear:
Min. Ground Clearance:
58.7 Inches
59.5 Inches
4.3 Inches
EXTERIOR DIMENSIONS:
Wheelbase:
Overall Length:
Total Body Width:
Overall Height:
98.0 Inches
185.2 Inches
69.0 Inches
48.2 Inches
INTERIOR DIMENSIONS
Headroom:
Shoulder Room:
Hip Room:
Leg Room:
37.1 Inches
47.9 Inches
48.8 Inches
42.1 Inches
Soft Top
Track Width, Front:
Track Width, Rear:
Min. Ground Clearance:
58.7 Inches
59.5 Inches
4.3 Inches
CAPACITIES:
Passenger Capacity:
Curb Weight w/ standard equipment (lbs.)
  Convertible with soft top
  Coupe
Interior Passenger Volume (cu.ft):
Luggage Compartment (cu.ft):
Fuel Capacity (gallons):
Engine Oil Capacity (qts.):
Coolant capacity with heater (qts.):

Battery:

Coefficient of Drag (cd):
Weight Dist. Front/Rear (%):

2 - Driver & Passenger

3,542
3,529
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6.5
18
4.0 for 350ci. engines  (capacity of crankcase less filter - refill)
19 for Base engine
18 for L82 engine
12 Volt, 78 Plates, 3,250 Watts for 350ci. engines
12 Volt, 90 Plates, 4,000 Watts for Heavy Duty
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MANUAL STEERING:
Type:



Make:
Steering Gear:
Overall Ratio
Street:
Fast:
Power:
Wheel diameter (in.):
Wheel Turns, Lock-to-Lock:
Street:
Fast:
Power:
Turning Diameter, curb-to-curb (ft.):
Turning Diameter, wall-to-wall (ft.):
Semi-reversible gear with ball-nut driven by recirculating anti-friction bearings, energy-absorbing steering column, steering damper attached to relay rod; two position steering knuckle arm attachment for street and fast ratio steering. Adjustable steering column available optionally.
Saginaw
16:1

20.2:1
17.6:1
17.6:1
15

3.4
2.92
2.92
37 ft. (outside front)
38.6 ft. (outside front)
BRAKES:
Type:
Standard:
J50:
Disk Diameter, front (in.):
Disk Diameter, rear (in.):
Swept Area (sq. in.):

Caliper Disk - 4 Wheel Hydraulic
Delco Moraine, vacuum power unit; integral
11.75 x 1.25
11.75 x 1.25
249.14
WHEELS/TIRES:
Wheel Type:
Standard:
Wheels, size:
Standard:
Tire, size:
Standard:
         QRM:
QRZ:
Inflation (cold)
Front:
Rear:
Short-spoke spider, welded steel

15" x 8.00

GR70 x 15B -- Blackwall Steel Belted Radial
GR70 x 15B -- White Stripe Steel Belted Radial
GR70 x 15B -- White Letter Steel Belted Radial

20
20
PERFORMANCE RESULTS:

4-Speed Transmission
Performance weight (lbs.)
Pounds/net horsepower
Pounds/cu.in. piston displacement
Net horsepower/cu.in. displacement
Power displacement (cu.ft./mile)
Displacement factor (cu.ft./mile)
0 - 60 mph (seconds)
Top Speed (mph)
Quarter Mile (secs @ mph)

Turbo Hydra-Matic Automatic Transmission
Performance weight (lbs.)
Pounds/net horsepower
Pounds/cu.in. piston displacement
Net horsepower/cu.in. displacement
Power displacement (cu.ft./mile)
Displacement factor (cu.ft./mile)
0 - 60 mph (seconds)
Top Speed (mph)
Quarter Mile (secs @ mph)

(1) - Car and Driver, May 1975
Base
3733
22.62
10.66
.471
258.61
138.29
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3787
22.95
10.82
.471
237.06
125.43
7.7
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16.12 @ 87.4 (1)
L82
3746
18.27
10.70
.586
273.23
138.69
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3800
18.54
10.86
.586
258.61
136.11
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1975 Corvette Coupe