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C3 --
Corvette Overview --
1970 Specifications
THE C3 CORVETTE - SPECIFICATIONS
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1969 Corvette Specifications
1971 Corvette Specifications
MODEL: 1970 Chevrolet CorvetteBODY STYLE: Two-door convertible/coupe, front engine, rear wheel drive
MANUFACTURING LOCATION: St. Louis, Missouri
VEHICLE NUMBERS (Also known as VIN Numbers): 194370S400001 - 194370S417316
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.
JANUARY 1979:402261
FEBRUARY 1970: 405183
MARCH. 1970: 407977
APRIL. 1970: 408314
MAY 1970: 410652
JUNE 1970: 413829
JULY 1970: 417316
PRODUCTION CUTOFF NUMBERS (ENDING VEHICLE):
CGW: 454 CUBIC INCH, 390 HORSEPOWER, AUTOMATIC TRANSMISSION
CRJ: 454 CUBIC INCH, 390 HORSEPOWER, AUTOMATIC TRANSMISSION, TRANSISTOR IGNITION
CRI: 454 CUBIC INCH, 390 HORSEPOWER, MANUAL TRANSMISSION, TRANSISTOR IGNITION
CTD: 350 CUBIC INCH, 300 HORSEPOWER, MANUAL TRANSMISSION
CTG: 350 CUBIC INCH, 300 HORSEPOWER, AUTOMATIC TRANSMISSION
CTH: 350 CUBIC INCH, 350 HORSEPOWER, MANUAL TRANSMISSION
CTJ: 350 CUBIC INCH, 350 HORSEPOWER, MANUAL TRANSMISSION, AIR CONDITION
CTK: 350 CUBIC INCH, 370 HORSEPOWER, MANUAL TRANSMISSION, TRANSISTOR IGNITION
CTL: 350 CUBIC INCH, 300 HORSEPOWER, MANUAL TRANSMISSION
CTM: 350 CUBIC INCH, 300 HORSEPOWER, AUTOMATIC TRANSMMISSION
CTN: 350 CUBIC INCH, 350 HORSEPOWER, MANUAL TRANSMMISSION
CTO: 350 CUBIC INCH, 350 HORSEPOWER, MANUAL TRANSMMISSION,AIR CONDITIONING
CTP: 350 CUBIC INCH, 350 HORSEPOWER, MANUAL TRANSMMISSION, TRANSISTOR IGNITION
CTQ: 350 CUBIC INCH, 350 HORSEPOWER, MANUAL TRANSMMISSION, AIR CONDITIONING, TRANSISTOR IGNITION
CTR: 350 CUBIC INCH, 370 HORSEPOWER, MANUAL TRANSMMISSION, TRANSISTOR IGNITION
CTU: 350 CUBIC INCH, 370 HORSEPOWER, MANUAL TRANSMMISSION, TRANSISTOR IGNITION
CTV: 350 CUBIC INCH, 370 HORSEPOWER (ZR1), MANUAL TRANSMMISSION
CZU: 454 CUBIC INCH, 390 HORSEPOWER, MANUAL TRANSMMISSION
ENGINE SUFFIX:
ENGINE BLOCK NUMBER:
3970010, 350 CUBIC INCH, 300 HP, 350HP, 370HP
3963512, 454 CUBIC INCH, 390 HP
3927186, 350 CUBIC INCH, 300HP, 350HP, 370HP
3927187, 350 CUBIC INCH, 350HP
3964290, 454 CUBIC INCH, 390HP
3973414, 350 CUBIC INCH, 370HP
HEAD NUMBER:
ROCHESTER Q-jet #7040202: 350 CUBIC INCH, 300HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7040203: 350 CUBIC INCH, 300HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7040204: 454 CUBIC INCH, 390HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7040205: 454 CUBIC INCH, 390HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7040207: 350 CUBIC INCH, 350HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7040212: 350 CUBIC INCH, 300HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7040213: 350 CUBIC INCH, 300HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7040502: 350 CUBIC INCH, 300HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7040503: 350 CUBIC INCH, 300HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7040504: 454 CUBIC INCH, 390HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7040505: 454 CUBIC INCH, 390HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7040507: 350 CUBIC INCH, 350HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7040513: 350 CUBIC INCH, 300HP, MANUAL TRANSMISSION
HOLLEY R4489A #3972123: 350 CUBIC INCH, 370HP, MANUAL TRANSMISSION
HOLLEY R4555A #3972121: 350 CUBIC INCH, 370HP, MANUAL TRANSMISSION
1111464: 454 CUBIC INCH, 390HP
1111490: 350 CUBIC INCH, 300HP
1111491: 350 CUBIC INCH, 370HP, TRANSISTOR IGNITION
1111493: 350 CUBIC INCH, 350HP
1112020: 350 CUBIC INCH, 300HP
1112021: 350 CUBIC INCH, 350HP
DISTRIBUTOR NUMBER:
CARBURETOR NUMBER:
CAK:  3.36:1 RATIO
CAL:  3.08:1 RATIO
CAN:  3.55:1 RATIO
CAP:  4.11:1 RATIO
CAS:  3.70:1 RATIO
CAV: 3.08:1 RATIO
CAW: 3.08:1 RATIO
CLR: 3.36:1 RATIO
CAM: 3.36:1 RATIO
CAO:  3.70:1 RATIO
CAT: 3.08:1 RATIO, HEAVY DUTY
CAU: 3.36:1, HEAVY DUTY
CAX: 3.36:1, HEAVY DUTY
CAY:  2.73:1 RATIO, TURBO HYDRA-MATIC TRANSMISSION
CAZ: 3.55:1 RATIO, HEAVY DUTY
CFA: 3.70:1 RATIO
CFB: 4.11:1 RATIO, HEAVY DUTY
CFC: 4.56:1, HEAVY DUTY
AXLE IDENTIFICATION:
  REGULAR AXLE:







  POSITRACTION AXLE:
1100825: 350 CUBIC INCH, 370HP
1100833: 350 CUBIC INCH 350HP, 454 CUBIC INCH 390HP
1100859: 350 CUBIC INCH, 300HP
ALTERNATOR:
1970 CORVETTE FACTORY OPTIONS
CODE:
19437
19467
---
A31
A85
C07
C08
C50
C60
G81
J50
L46
LS5
LT1
M21
M22
M40
NA9
N37
N40
P02
PT7
PU9
T60
UA6
U69
U70
ZR1
DESCRIPTION:
Base Corvette Sport Coupe
Base Corvette Convertible
Custom Interior Trim
Power Windows
Custom Shoulder Belts (std with coupe)
Auxiliary Hardtop (for convertible)
Vinyl Covering (for auxiliary hardtop)
Rear Window Defroster
Air Conditioning
Optional rear Axle Ratio
Power Brakes
350ci 350hp Engine
454ci 390hp Engine
350ci 370hp Engine
4-Speed Manual Transmission, Close-Ratio
4-Speed Manual Transmission, Close Ratio Heavy Duty
Turbo-Hydro-matic Automatic Transmission
California Emissions
Tilt-Telescopic Steering Column
Power Steering
Deluxe Wheel Cover
White Stripe Tires, F70x15, Nylon
White Letter Tires, F70x15, Nylon
Heavy Duty Battery (std with LS5)
Alarm System
AM-FM Radio
AM-FM Radio, stereo
Special Purpose Engine Package
QUANTITY:
10,668
6,648
3,191
4,813
475
2,556
832
1,281
6,659
2,862
8,984
4,910
4,473
1,287
4,383
25
5,102
1,758
5,803
11,907
3,467
6,589
7,985
165
6,727
14,529
2,462
25
RETAIL PRICE:
$5,192.00
$4,849.00
$158.00
$63.20
$42.15
$273.85
$63.20
$36.90
$447.65
$12.65
$47.40
$158.00
$289.65
$447.60
$0.00
$95.00
$0.00
$36.90
$84.30
$105.35
$57.95
$31.30
$33.15
$15.80
$31.60
$172.75
$278.10
$968.95
COLOR CODES:
CODE
972
974
975
976
979
982
984
986
991
992
993
EXTERIOR
Classic White
Monza Red
Marlboro Maroon
Mulsanne Blue
Bridgehampton Blue
Donnybrooke Green
Daytona Yellow
Cortez Silver
Ontario Orange
Laguna Gray
Corvette Bronze
SOFT TOP
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
Black, White, Sandalwood
INTERIOR
Black, Blue, Brown, Green, Red, Saddle
Black, Brown, Red, Saddle
Black, Brown, Saddle
Black, Blue
Black, Blue
Black, Brown, Green, Saddle
Black, Green
Black, Blue, Brown, Green, Red, Saddle
Black, Saddle
Black, Blue, Brown, Green, Red, Saddle
Black
INTERIOR COLOR CODES (VINYL):
Black (Vinyl)
Red (Vinyl)
Blue (Vinyl)
Brown (Vinyl)
Saddle (Vinyl)
Green (Vinyl)
400
407
411
414
418
422
INTERIOR COLOR CODES (LEATHER):
Black (Leather)
Saddle (Leather)
403
424
WHEELS
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Cortez Silver
Cortez SilverCortez SilverCortez Silver
Cortez Silver
EXTERIOR COLOR TEMPLATE:
Classic
White
Blue
Monza
Red
Marlboro
Maroon
Mulsanne
Blue
Donnybrooke
Green
Ontario Orange
Cortez Silver
INTERIOR COLOR TEMPLATE:
Black
BlackBlackBlack
Black
Black
Mulsanne Blue
Mulsanne BlueMulsanne BlueMulsanne Blue
Mulsanne Blue
Marlboro Maroon
Marlboro MaroonMarlboro MaroonMarlboro Maroon
Marlboro Maroon
Classic White
Classic WhiteClassic WhiteClassic White
Classic White
Donnybrooke Green
Donnybrooke GreenDonnybrooke GreenDonnybrooke Green
Donnybrooke Green
Ontario Orange
Ontario OrangeOntario OrangeOntario Orange
Ontario Orange
Brown
Brown
BrownBrownBrown
Brown
Blue
BlueBlueBlue
Blue
Saddle
Laguna Gray
Laguna GrayLaguna GrayLaguna Gray
Laguna Gray
Laguna Gray
Red
RedRedRed
Red
Red
Daytona Yellow
Daytona YellowDaytona YellowDaytona Yellow
Daytona Yellow
Daytona Yellow
Green
Green
GreenGreenGreen
Green
Bridgehampton
Blue
Bridgehampton Blue
Bridgehampton BlueBridgehampton BlueBridgehampton Blue
Bridgehampton Blue
Saddle
SaddleSaddleSaddle
Saddle
Standard Seats
Standard Wheels
1970 Corvette Wheels
1970 Corvette Deluxe Wheel Covers RPO P02
RPO P02 Deluxe Wheel Covers
Engine:
Order Code:
Engine Manufacturing Location
Type:
Number of Cylinders
Displacement (cid):
Fuel induction system:
Horsepower (gross hp @ rpm):
Torque (gross 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
300 @ 4,800
380 @ 3,200

4.00 x 3.48
---
10.25:1
Hydraulic

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

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

---
---
---

---
---
---
L46
Flint, Michigan
90 degree V, Overhead Valve
8
350
4-Barrel Carburetor
350 @ 5,600
380 @ 3,600

4.00 x 3.48
---
11.0:1
Hydraulic

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

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

N/A
N/A
N/A

---
---
---
CORVETTE POWERTRAIN SPECIFICATIONS:
LT1
Flint, Michigan
90 degree V, Overhead Valve
8
350
4-Barrel Carburetor
370 @ 6,000
380 @ 4,000

4.00 x 3.48
---
11.0:1
Mechanical

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

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

N/A
N/A
N/A

---
---
---
Engine:
Order Code:
Engine Manufacturing Location
Type:
Number of Cylinders
Displacement (cid):
Fuel induction system:
Horsepower (gross hp @ rpm):
Torque (gross 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):
LS5
Flint, Michigan
90 degree V, Overhead Valve
8
454
4-Barrel Carburetor
390 @ 4,800
500 @ 3,400

4.251 x 4.00
---
10.25:1
Hydraulic

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

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

---
---
---

---
---
---
LS7
Flint, Michigan
90 degree V, Overhead Valve
8
454
4-Barrel Carburetor
460 @ 5,600
490 @ 3,600

4.251 x 4.00
---
11.25:1
Mechanical

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

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

---
---
---

---
---
---
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)
2.52:1
1.88:1
1.46:1
1.00:1
2.59:1
Drive:
2.48:1
1.48:1
1.00:1
N/A
Clutch:
  Model & Type
  Effective plate load (lbs.)
  Total Affective Area (sq. in.)
Single Dry Disk Centrifugal
2450 - 2750 (2900 - 3100 Heavy Duty)
123.7 (103.53 Heavy Duty)
4-Speed Close Ratio (RPO M21)
2.20:1
1.64:1
1.27:1
1.00:1
2.26:1
4-Speed Heavy Duty (RPO M22)
2.20:1
1.64:1
1.27:1
1.00:1
2.26:1
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 Springs:
  Type
  Material
  Part number
  Spring Rate (lb. per in.)
  Rate at Wheel (lb. per in.)
  Design Load at Spring
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
46.36 x 2.25 x 2.121
Front Stabilizer Bar:
  Type
  Material
  Diameter
Link
Hot rolled steel
.750 with 350ci engine, .9375 with 454ci engine
Rear strut:
  Material
  Diameter  
Forged Steel
.75
Right-hand Helix Variable rate
Steel Alloy
3931823, 3931825
250 (284)
---
9.99 in. @ 1395 lbs. (9.99 in. @ 1540 lbs.)
EXTERIOR DIMENSIONS:
Wheelbase:
Overall Length:
Total Body Width:
Overall Height:

98.0 Inches
182.5 Inches
69.0 Inches
47.9 Inches
INTERIOR DIMENSIONS
Headroom:
Shoulder Room:
Hip Room:
Leg Room:
37.1 Inches
46.9 Inches
48.8 Inches
43.0 Inches
Hardtop
Track Width, Front:
Track Width, Rear:
Min. Ground Clearance:
58.7 Inches
59.4 Inches
4.5 Inches
EXTERIOR DIMENSIONS:
Wheelbase:
Overall Length:
Total Body Width:
Overall Height:
98.0 Inches
182.5 Inches
69.0 Inches
47.8 Inches
INTERIOR DIMENSIONS
Headroom:
Shoulder Room:
Hip Room:
Leg Room:
37.2 Inches
46.9 Inches
48.8 Inches
43.0 Inches
Coupe
Track Width, Front:
Track Width, Rear:
Min. Ground Clearance:
58.7 Inches
59.4 Inches
4.8 Inches
EXTERIOR DIMENSIONS:
Wheelbase:
Overall Length:
Total Body Width:
Overall Height:
98.0 Inches
182.5 Inches
69.0 Inches
47.9 Inches
INTERIOR DIMENSIONS
Headroom:
Shoulder Room:
Hip Room:
Leg Room:
38.3 Inches
46.9 Inches
48.8 Inches
43.0 Inches
Soft Top
Track Width, Front:
Track Width, Rear:
Min. Ground Clearance:
58.7 Inches
59.4 Inches
4.5 Inches
CAPACITIES:
Passenger Capacity:
Curb Weight w/ standard equipment (lbs.)
  Convertible with soft top
  Convertible; C07 with folding top
  Convertible; C07 less folding 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

3,304


3,290
---
Coupe 6.1, Convertible 5.0
20
4.0 for 350ci. engines  (capacity of crankcase less filter - refill)
5.0 for 454ci engines (capacity of crankcase less filter - refill)
15 for standard and RPO L46 engines
18 for RPO LT1 engine
22 for LS5 engine
12 Volt, 62AH for 350ci. engines
12 Volt, 80AH for 454ci. engines
---
---
MANUAL STEERING:
Type:



Make:
Steering Gear:
Overall Ratio
Street:
Fast:
Wheel diameter (in.):
Wheel Turns, Lock-to-Lock:
Street:
Fast:
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
16

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

Caliper Disk - 4 Wheel Hydraulic
Delco Moraine, vacuum power unit; integral
11.75 x 1.25
11.75 x 1.25
461.2
WHEELS/TIRES:
Wheel Type:
Standard:
Wheels, size:
Standard:
Tire, size:
Standard:
         PT7:
PU9:
Inflation (cold)
Front:
Rear:
Short-spoke spider, welded steel

15" x 8.00

F70 x 15 -- 4 PR. 2-Ply Tubeless Nylon
F70 x 15 -- 4 PR, 2-Ply White Stripe Nylon
F70 x 15 -- 4 PR, 2-Ply White Letter Nylon

24 lbs.
24 lbs.
POWER STEERING RPO N40: (Specifications are the same as Manual Steering except the following.)
Description:
Gear Ratio:
Overall Ratio:
Wheel Turns, Lock-to-Lock:
Hydraulic; pump powered cylinder assisted linkage
16:1
17.6:1
2.92
PERFORMANCE RESULTS:

4-Speed Transmission
Performance weight (lbs.)
Pounds/gross horsepower
Pounds/cu.in. piston displacement
Gross horsepower/cu.in. displacement
Power displacement (cu.ft./mile)
Displacement factor (cu.ft./mile)
0 - 60 mph (seconds)
Top Speed (mph)

4-Speed Transmission-Close Ratio
Performance weight (lbs.)
Pounds/gross horsepower
Pounds/cu.in. piston displacement
Gross horsepower/cu.in. displacement
Power displacement (cu.ft./mile)
Displacement factor (cu.ft./mile)
0 - 60 mph (seconds)
Top Speed (mph)

Powerglide Automatic Transmission
Performance weight (lbs.)
Pounds/gross horsepower
Pounds/cu.in. piston displacement
Gross horsepower/cu.in. displacement
Power displacement (cu.ft./mile)
Displacement factor (cu.ft./mile)
0 - 60 mph (seconds)
Top Speed (mph)

(1) - Sports Car Graphic, June 1970
Standard
3586
11.95
10.25
.857
262.69
146.51
---
---


3597
10.28
10.28
1.00
289.28
160.84
---
---
L46
3597
10.28
10.28
1.00
262.69
146.06
---
---


3577
9.67
10.22
1.06
289.28
160.84
---
---
LT1
3577
9.67
10.22
1.06
277.55
155.19
6.7 (1)
120 (1)


3577
9.67
10.22
1.06
289.28
161.74
---
---
LS5
3768
9.66
8.30
8.59
312.36
165.79
---
---


3768
9.66
8.30
.859
340.75
180.87
---
---


3837
9.84
8.45
.859
312.36
162.81
---
---
LS7
3641
7.91
8.02
1.01
340.75
170.38
---
---


3685
8.01
8.12
1.01
312.36
169.76
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1970 Corvette Seats