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1970 CORVETTE

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  • Refinements were made to the basic styling used since 1968 which included
    • A new ice-cube-tray design grille and matching side fender louvers
    • rectangular, amber front signal lights
    • fender flares
    • square exhaust exists
    • improved bucket seats and safety belt retractor containers
  • Standard equipment included
    • front and rear disc brakes
    • headlight washers
    • wheel trim rings
    • carpeting
    • center console
    • all-vinyl upholstery (in either black, blue, green, saddle, or red)
  • Ten exterior colors were available
    • Mulsanne Blue
    • Bridgehampton Blue
    • Donnybrooke Green
    • Laguna Gray
    • Marlboro Maroon
    • Corvette Bronze
    • Monza Red
    • Cortez Silver
    • Classic White
    • Daytona Yellow
  • All convertibles came with a choice of Black or White soft tops

V.I.N. NUMBERS

  • The serial number [Vehicle Identification Number -- VIN] was stamped on a plate on the inner vertical surface of the left windshield pillar visible through the windshield.
  • Convertible Serial numbers ranged from 194670S100001 to 194670S117316
  • Coupe Serial numbers ranged from 194370S100001 to 194670S117316
Position Character Description
1 1 Chevrolet Division
2 9 body series: Corvette
3 4 type of engine: V-8
4 & 5 67 convertible
37 coupe
6 0 1970
7 S Assembled in St. Louis, MO
8 to 13 100001 to 128566 production sequence
  • Engine serial number
1 to 7 0001001sequential production number
8 F or TFlint, MI or Tonawanda, NY
9 to 11Carburetion & transmission Code Engine Compression transmission Carburetor Extras
CTG 350-cid 300-hp V-8 10.25:1 THM-400 automatic four-barrel  
CTM 350-cid 300-hp V-8 10.25:1 THM-400 automatic four-barrel  
CTD 350-cid 300-hp V-8 10.25:1 manual four-barrel  
CTL 350-cid 300-hp V-8 10.25:1 manual four-barrel  
CTN 350-cid 350-hp V-8 11.0:1 manual four-barrel  
CTO 350-cid 350-hp V-8 11.0:1 manual four-barrel  
CTP 350-cid 350-hp V-8 11.0:1 manual four-barrel transistor ignition
CTQ 350-cid 350-hp V-8 11.0:1 manual four-barrel transistor ignition
CTR 350-cid 370-hp V-8 11.0:1 M-22 four-barrel transistor ignition
CTU 350-cid 370-hp V-8 11.0:1 M-22 four-barrel transistor ignition
CTV 350-cid 370-hp V-8 11.0:1 M-22 four-barrel transistor ignition
CGW 454-cid 390-hp V-8 10.25:1 manual four-barrel  
CZU 454-cid 390-hp V-8 10.25:1 manual four-barrel  
CZL 454-cid 465-hp V-8 11.25:1 manual four-barrel aluminum heads, transistor ignition
CZN 454-cid 465-hp V-8 11.25:1 THM-400 automatic four-barrel aluminum heads, transistor ignition
CRI 454-cid 390-hp V-8 10.25:1 manual four-barrel  
CTH 350-cid 350-hp V-8 11.0:1 manual four-barrel  
CTJ 350-cid 350-hp V-8 11.0:1 manual four-barrel  
CTK 350-cid 370-hp V-8 11.0:1 manual four-barrel transistor ignition
CRJ 454-cid 390-hp V-8 10.25:1 THM-400 automatic four-barrel transistor ignition
  • Corvette engines have the last six digits of the VIN stamped on the block next to the engine number
  • The body number plate was located on the engine side of the cowl.
  • The Fisher Body Style Number 70-19467 identifies a Corvette Stingray convertible
  • The Fisher Body Style Number 70-19437 identifies a Corvette Stingray coupe
  • The body number is the production serial number of the body.
  • The trim number indicates the interior trim color and material.
  • The ten 1970 Corvette exterior colors were:
    • 976 = Mulsanne Blue
    • 979 = Bridgehampton Blue
    • 982 = Donnybrooke Green
    • 992 = Laguna Gray
    • 975 = Marlboro Maroon
    • 993 = Corvette Bronze
    • 974 = Monza Red
    • 986 = Cortez Silver
    • 972 = Classic White
    • 984 = Daytona Yellow
  • Upholstery Codes
Color Vinyl Upholstery Leather Upholstery
Black 400 403
Red 407  
Blue 411  
Brown 414  
Saddle 418 424
Green 422  

IDENTIFICATION

Series No. Body/Style No. Body Type Factory Price Shipping Weight Production Total
194 37
2-dr. Sport Coupe - 2 passenger

2-dr. Sport Coupe - 2 passenger

 $5192 3153 lb 10,668
194 67
2-dr. Conv - 2 passenger

2-dr. Conv - 2 passenger

 $4849 3167 lb 6,648

ENGINE

Feature Standard Engine (RPO ZQ3) Optional Engine (RPO L46) Optional Engine (RPO LS5) Optional Engine (RPO LT1) Optional Engine (RPO LS7)
TypeV-8, Overhead valve
BlockCast iron block
Displacement350 cid 454 cid 350 cid 454 cid
Bore & Stroke4.00 x 3.48" 4.251 x 4.00" 4.00 x 3.48" 4.251 x 4.00"
Compression ratio 10.25:1 11.0:1 10.25:1 11.0:1 11.25:1
Brake horsepower 300 @ 4800 350 @ 5600 390 @ 4800 370 @ 6000 465 @ 5200
Torque   380 lb-ft @ 3800 500 lb-ft @ 3400 380 lb-ft @ 4000 490 @ 5200
Main bearingfive
Valve liftershydraulicSolid valve lifters
Camshaft     high-performance camshaft High-performance camshaft High-performance camshaft
Fuel supplyRochester Quadra-Jet four-barrel Model 4MV Rochester 750CFM four-barrel Holley four-barrel on aluminum intake manifold Holley 800CFM four-barrel

TRANSMISSION

  • Standard Manual Transmission: four-speed manual all-synchromesh transmission with floor-mounted gear shifter
  • Automatic Transmission: Three-speed Turbo Hydra-Matic automatic transmission with floor-mounted gear shifter (optional)
  • Optional Manual Transmission: Heavy duty, close ratio, four-speed manual all-synchromesh transmission with floor-mounted gear shifter

CHASSIS

Feature Convertible Coupe
Wheelbase 98 inches (2.489 m) 98 inches (2.489 m)
Overall length 182.5 inches (4.636 m) 182.5 inches (4.636 m)
Overall width 69.0 inches (1.753 m) 69.0 inches (1.753 m)
Overall height   47.4 inches (1.204 m)
Front tread 58.7 inches (1.491 m) 58.7 inches (1.491 m)
Rear tread 59.4 inches (1.509 m) 59.4 inches (1.509 m)
Tires F70-15 F70-15
FrameFull-length welded-steel ladder type with five cross members. Steel box sections, welded.
Front suspensionIndependent, unequal-length A-arms, coil springs; tubular shocks and stabilizer bar
Rear suspensionIndependent, trailing arms, toe links, transverse chromium-carbon steel leaf spring, tube shocks, and anti-roll bar
SteeringSaginaw recirculating ball, 17.6:1 ratio, 2.9 turns to lock, 39.0 turning circle
Rear axle typeSprung differential, Hypoid gear
BrakesHydraulic, vented four wheel discs; 11.75-inch diameter, single calipers, optional power assist
Swept area11.75" front and back
Total swept area461 sq. in.
Wheels8" wide slotted steel 15" 5-lug disc
Standard rear axle ratio3.36:1
Optional rear axle ratio2.73:1, 3.08:1, 3.36:1, 3.55:1, 4.11:1, 4.56:1

OPTIONS

RPO Custom interior trim $158
RPO A31 Electric power windows $63.20
RPO A85 Custom shoulder belts $42.15
RPO C07 Auxiliary hardtop for convertible $273.85
RPO C08 Vinyl cover for auxiliary hardtop $63.20
RPO C50 Rear window defroster $36.90
RPO C60 Air conditioning $447.65
RPO G81 Positraction rear axle, all ratios $12.65
RPO J50 Power brakes $47.40
RPO L46 350-cid 350-hp V-8 $158
RPO LS5 454-cid 390-hp V-8 $289.65
RPO LT1 350-cid 370-hp V-8 $447.60
RPO M21 Four-speed close-ratio manual transmission n/c
RPO M22 Heavy-duty close-ratio four-speed manual transmission $95
RPO M40 Turbo Hydra-Matic automatic transmission n/c
RPO N37 Tilt-telescopic steering wheel $84.30
RPO N40 Power steering $105.35
RPO P01 Custom Wheel covers $57.95
RPO PT7 F70 x 15, white stripe tires $31.30
RPO PU9 F70 x 15, raised-white-letter tires $33.15
RPO T60 Heavy-duty battery $15.80
RPO UA6 Alarm system $31.60
RPO U69 AM-FM radio $172.75
RPO U79 Stereo radio $278.10

ZR1 OPTIONS

  • The letter "Z" meant it was part of Chevrolet's "special items" group
  • It included the following:
    • LT1 engine
    • M22 heavy-duty four-speed manual transmission
    • J50/J56 dual-pin brakes with heavy-duty front pads and power assist
  • F41 suspension consisting of the following:
    • special 89 lb/in ride rate front springs
    • 121 lb/in ride rate rear springs
    • matching shock absorbers
    • a 0.75-inch front stabilizer bar

HISTORICAL NOTES

1970 Corvette Notes

  • Corvette built only one car with the LS7 engine. The editor of Sports Car Graphic drove it for 2500 miles and found it did the quarter mile in 13.8 seconds at 108 mph. GM cancelled the option even though the LS7 option is listed in some early 1970 sales literature. None were ever sold.
  • 70.5 % of 1970 Corvettes were sold with four-speed manual transmissions
  • 33.5 % had tilt steering wheels
  • 27.9 % had power windows
  • 38.5 % had air conditioning
  • 68.8 % had power steering
  • A 1970 Corvette with the L56 engine could do 0-to-60 mph in seven seconds and go from 0-to-100 mph in 14 seconds
  • A 1970 Corvette with the LT1 engine could do 0-to-30 mph in 2.5 seconds, 0-to-60 mph in 5.7 seconds and go from 0-to-100 mph in 13.5 seconds
  • A 1970 Corvette with the LT1 engine could do the quarter mile in 14.17 seconds at 102.15 and had a top speed of 122 mph

PHOTOS

1970 Corvette

1970 Corvette

1970 Corvette

1970 Corvette

1970 Corvette

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1970 Corvette

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1970 Corvette

1970 Corvette