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1970 Specs

More About the 1970 Corvette
1970 Chevrolet Corvette C3 in Daytona Yellow

1970 Chevrolet Corvette C3 in Daytona Yellow

Close1970 Chevrolet Corvette C3 in Daytona Yellow

Body Specs

Wheelbase:    98.00 inches
Overhang (Front):    40.6 inches
Overhang (Rear):    43.9 inches
Front Track:    58.7 inches
Rear Track:    59.4 inches
Length:    182.5 inches
Front Fender Overall Width:    69.0 inches
Rear Fender Overall Width:    68.8 inches
Overall Height (Design):   47.4 inches (Coupe)
  47.5 inchess (Convertible)
Rocker Panel to Ground (Front):    7.3 inches
Rocker Panel to Ground (Rear):    7.1 inches
Bottom of Door to Ground (Closed):    10.0 inches
Oil Pan to Ground:    4.8 inches
Flywheel Housing to Ground:    5.2 inches
Minimum Ground Clearance:   4.8 inches (Coupe)
  4.5 inches (Convertible)
Exhaust System to Ground:   4.8 inches (Coupe)
  4.5 inches (Convertible)
Windshield Slope Angle:    32.6°
Head Room:   37.2 inches (Coupe)
  38.3 inches (Convertible)
Shoulder Room:    46.9 inches
Hip Room:    48.8 inches
Tire Size:   F70-15B-4PR
  Nylon - 2 ply
Recommended Tire Inflation   24 PSI (Cold)
  30 PSI (Hot)
Wheels, Regular Production:    Size: 15 x 8.00
Turbo Hydra-Matic (Automatic) Transmission
(Not Available with L46, LT1 Engines):
  1st Gear 2.48:1
  2nd Gear 1.48:1
  3rd Gear 1.00:1
  Reverse Gear 2.08:1
Lubricant Capacity:    3 Quarts
Four Speed M20 Transmission
(Not available with L71 Engine):
  1st Gear 2.52:1
  2nd Gear 1.88:1
  3rd Gear 1.46:1
  4th Gear 1.00:1
  Reverse Gear 2.59:1
Close Ratio Four Speed
M21 Transmission
(Not available with Standard Engine):
  1st Gear 2.20:1
  2nd Gear 1.64:1
  3rd Gear 1.27:1
  4th Gear 1.00:1
  Reverse Gear 2.26:1
Transmission Lubricant Type:   Military MIL-L-2105-B
  SAE 80
Lubricant Capacity:    Four Speed: 2.5 Quarts
Differential Lubricant Type:   Military MIL-L-2105-B
  SAE 80
Differential Lubricant Capacity:    3.7 pints
Axle Ratio:   Standard: 3.36:1
  Optional: 3.08:1
  Turbo Hydra-Matic (Automatic): 3.08:1, 3.36:1, 3.55:1
  L46 Engine: 3.36:1, 3.55:1
  LT-1 Engine: 3.08:1, 3.36:1, 3.55:1, 3.70:1, 4.11:1, 4.56:1
  LS5 Engine: 2.73:1, 3.08:1, 3.36:1, 3.55:1, 3.70:1
Transmission Synchromesh:    All Four Gears
Standard Fuel Tank Capacity:    20 Gallons
Steering Wheel Diameter
(Power, Manual Steering):
   16.0 inches
Steering Ratio:    16.0:1
Wheel Turns:    3.4
Turning Circle:   40.0 feet (Wall to Wall)
  37.0 feet (Curb to Curb)


Weight

Model 19467 Convertible:   Front - Curb: 1,574; Shipping: 1,598 lb.
  Rear - Curb: 1,725; Shipping: 1,598 lb.
  Total - Curb: 3,299; Shipping: 3,196 lb.
Model 19437 Sport Coupe:   Front - Curb: 1,598; Shipping: 1,620 lb.
  Rear - Curb: 1,687; Shipping: 1,560 lb.
  Total - Curb: 3,285; Shipping: 3,180 lb.

Power to Weight Ratio
Four Speed Manual Transmission:   300 Horsepower Standard Engine: 3,586 lb.
  Pounds / Horsepower: 11.95
Four Speed Manual Transmission:   350 Horsepower L46 Engine: 3,597 lb.
  Pounds / Horsepower: 10.28
Four Speed Manual Transmission:   370 Horsepower LT1 Engine: 3,577 lb.
  Pounds / Horsepower: 9.67
Four Speed Manual Transmission:   390 Horsepower LS5 Engine: 3,768 lb.
  Pounds / Horsepower: 9.66
Four Speed Manual Transmission (Close Ratio)   350 Horsepower L46 Engine: 3,597 lb.
  Pounds / Horsepower: 9.67
Four Speed Manual Transmission (Close Ratio):   370 Horsepower LT1 Engine: 3,577 lb.
  Pounds / Horsepower: 9.67
Four Speed Manual Transmission (Close Ratio):   390 Horsepower LS5 Engine: 3,768 lb.
  Pounds / Horsepower: 9.66
Four Speed Manual Transmission (Close Ratio):   460 Horsepower LS7 Engine*: 3,641 lb.
  Pounds / Horsepower: 7.91
Turbo Hydra-Matic
Automatic Transmission:
  300 Horsepower Base Engine: 3,661 lb.
  Pounds / Horsepower: 12.20
Turbo Hydra-Matic
Automatic Transmission:
  390 Horsepower LS5 Engine: 3,837 lb.
  Pounds / Horsepower: 9.84
Turbo Hydra-Matic
Automatic Transmission:
  460 Horsepower LS7 Engine*: 3,685 lb.
  Pounds / Horsepower: 8.01
*None were sold to the public

Weight Differentials
Auxiliary Top (RPO C07)   +53 lb. (with Folding Top)
  (+8 lb. Front; +45 lb. Rear)
Air Conditioning (RPO C60):   +88 lb. (With Standard, L46 Engines & 3 Speed Transmission)
  (+70 lb. Front; +18 lb. Rear)
  +78 lb. (With Standard Engine & Automatic Transmission)
  (+63 lb. Front; +15 lb. Rear)
  +99 lb. (With LS5 Engine & Four Speed Transmission)
  (+79 lb. Front; +20 lb. Rear)
Power Windows (RPO A31):   +10 lb.
  (+5 lb. Front; +5 lb. Rear)
Power Brakes (RPO J50):   +10 lb.
  (+8 lb. Front; +2 lb. Rear)
Transistor Ignition (RPO K66):    +2 lb.
Standard 350 cubic inch Engine
300 Horsepower (RPO L36)
With Turbo Hydra Matic Transmission (Automatic):
  +85 lb.
  (+53 lb. Front; +32 lb. Rear)
350 cubic inch L46 Engine
With Four Speed Transmission:
  +16 lb.
  (+16 lb. Front; +0 lb. Rear)
350 cubic inch LT1 Engine
With Four Speed Transmission:
  +16 lb.
  (+13 lb. Front; +3 lb. Rear)
454 cubic inch Engine
390 Horsepower (RPO LS5)
With Four Speed Transmission:
  +178 lb.
  (+153 lb. Front; +25 lb. Rear)
454 cubic inch Engine
390 Horsepower (RPO LS5)
With Turbo Hydra Matic Transmission:
  +229 lb.
  (+186 lb. Front; +43 lb. Rear)
Power Steering (RPO N40):   +26 lb.
  (+25 lb. Front; +1 lb. Rear)
  With Standard Engine
  +26 lb.
  (+25 lb. Front; +1 lb. Rear)
  With L46 & LT1 Engines
  +29 lb.
  (+28 lb. Front; +1 lb. Rear)
  With LS5 Engine
Deluxe Wheel Covers (RPO P02):   +18 lb.
  (+9 lb. Front; +9 lb. Rear)
Radio, AM/FM Pushbutton3 (RPO U69):   +13 lb.
  (+8 lb. Front; +5 lb. Rear)
  With LS5 Engine
  +29 lb.
  (+28 lb. Front; +1 lb. Rear)
W  ith LS5 Engine
Turbo Hydra-Matic (Automatic) Transmission (RPO M40):   +62 lb.
  (+35 lb. Front; +27 lb. Rear)
Side Mounted Dual Exhaust
(RPO N14):
  -30 lb.
  (+10 lb. Front; -40 lb. Rear)


Engine Specs

Type:    V8
Valve Location:    In Head
Bore / Stroke:   4.00" / 3.48" (Standard, L46, LT1 350 Cubic Inch)
  4.251" / 4.00" (LS5 454 Cubic Inch)
Displacement:   Standard, L46, LT1 Engines: 350 Cubic Inches
  LS5 Engine: 454 Cubic Inches
Compression Ratio:   10.25:1 (Standard, LS5 Engine)
  11.0:1 (L46, LT1 Engines)
Rocker Arms:    Stamping, Steel
Rocker Arm Ratio:    1.5:1
Valve Train Lash, Inlet / Exhaust
Hydraulic Lifters
   Zero
Valve Train Lash, Inlet / Exhaust
Mechanical Lifters (RPO LT1):
  Inlet: .020 inch
  Exhaust: .025 inch
Crankshaft Material:    Forged Steel
Camshaft Material:    Cast Alloy Iron
Oil Pump Type:    Gear
Normal Oil Pressure:   30 - 45 psi @ 1,500 RPM
  50 - 75 psi @ 2,000 RPM
Oil Pressure Gauge:    Mechanical
Crankcase Oil Capacity, Standard, L79 Engines:   4 Quarts, Less Filter
  5 Quarts, With Filter
Crankcase Oil Capacity, L36, L68, L71, L88 and L89 Engines:   5 Quarts, Less Filter
  6 Quarts, With Filter
Recommended Oil Grade:   Above 20°F: SAE 20W, SAE 10W-30, 10W-40,
  20W-40
  0°F to 60°F: SAE 10W 5W-30, 10W-40
  Below 20°F: SAE 5W, 5W-20, 5W-30
Fuel Filter:    Strainer
Fuel Pump:    Mechanical
Fuel Pressure:    5¼ - 6½ PSI
Cooling System Capacity:   350 cubic inch Standard, L46 Engines
  15 Quarts (with heater)
  14 Quarts (without heater)
  350 cubic inch LT1 Engine
  18 Quarts (with heater)
  17 Quarts (without heater)
  454 cubic inch LS5 Engine
  22 Quarts (with heater)
  21 Quarts (without heater)
Thermostat Type:    Choke
Radiator Cap Relief Pressure:    15 +/- 1 PSI
Battery:   12 volt - 78 plate
  62 Amp hr. @ 20 hr.
Thermostat Opening:    192° - 198° F

Brakes
Type:    Caliper Disc, Four Wheel Hydraulic
Effective Area:    78.1 Square Inches
Swept Area:    461.2 Square Inches
Disc:    Vented
Pistons per Caliper:    Four

Horsepower
Standard Engine (350 cubic inch):   300 hp @ 4,800 RPM;
  Torque: 380 lb-ft @ 3,200 RPM
RPO L46 (350 cubic inch):   350 hp @ 5,600 RPM;
  Torque: 380 lb-ft. @ 3,600 RPM
RPO LT1:   370 hp @ 6,000 RPM;
  Torque: 380 lb-ft @ 4,000 RPM
RPO LS5 (454 cubic inch):   390 hp @ 4,800 RPM;
  Torque: 500 lb-ft @ 3,400 RPM

Ignition System
Coil:   Delco-Remy Base: 1111490; L46: 1111493; LT1; 1111491; LS5: 1111202
Coil current rating:   4 amps (engine stopped)
  1.8 amps (engine running)
Breaker Gap:    .019"
Ignition Timing:   4° BTDC @ 700* RPM (Standard Engine)
  8° BTDC @ 750 RPM (L46 Engine)
  8° @ 900 RPM (LT1 Engine)
  6° @ 700 RPM* (LS5 Engine)
  * 600 RPM w/Automatic
Ignition Timing Centrifugal Advance:   Start: 900 RPM (Base Engine); 1,150 RPM (L46); 1,000 RPM (LT1); 1,085 (LS5)
  15° @ 1,500 RPM | Max: 30° @ 5,100 RPM (Standard Engine)
  10° @ 1,700 RPM | Max: 26° @ 5,000 RPM
  (L46 Engine)
  Max: 26° @ 3,800 RPM
  (LT1 Engine)
  17° @ 2,100 RPM | Max: 22° @ 3,200 RPM (LS5 Engine)
Ignition Timing Vacuum Advance:   Start: 8.00 inches Hg (Standard, L46 Engines)
  Maximum: 19° @ 17 inches Hg
  Start: 8.00 inches Hg (LT1 Engine)
  Maximum: 15° @ 15.5 inches Hg
  Start: 7.00 inches Hg (LS5 Engine)
  Maximum: 12° @ 12 inches Hg
Spark Plug:   ACR44 (350 Cubic Inch Base, L46 Engines)
  ACR43 (350 Cubic Inch LT1 Engine)
  ACR43T (454 Cubic Inch LS5 Engine)
Spark Plug Thread:    14 mm.
Spark Plug Torque:    25 lb.-ft.
Spark Plug Gap:    .033 - .038 inch
Firing Order:    1-8-4-3-6-5-7-2

1970 Corvette Options

RPO: Description Production:    Price
Custom Interior Trim 3,191 (18.43%) $158.00
A31 Power Windows 4,813 (27.80%) $63.20
A85 Custom Shoulder Belts (standard with coupe) 475 (2.74%) $42.15
C07 Auxiliary Hardtop (for convertible) 2,556 (14.76%) $273.85
C08 Vinyl Covering (for auxiliary hardtop) 832 (4.80%) $63.20
C50 Rear Window Defroster 1,281 (7.40%) $36.90
C60 Air Conditioning 6,659 (38.46%) $447.65
G81 Optional Rear Axle Ratio 2,862 (16.53%) $12.65
J50 Power Brakes 8,984 (51.88%) $47.40
L46 350 cu. in. 350hp Engine 4,910 (28.36%) $158.00
LS5 454 cu. in. 390hp Engine 4,473 (25.83%) $289.65
LT1 350 cu. in. 370hp Engine 1,287 (7.43%) $447.60
M21 4-Speed Manual Transmission, close ratio 4,383 (25.31%) n/a
M22 4-Speed Manual Transmission, close ratio, heavy duty 25 (0.14%) $95.00
M40 Turbo Hydra-Matic Automatic Transmission 5,102 (29.46%) n/a
N37 Tilt-Telescopic Steering Column 5,803 (33.51%) $84.30
N40 Power Steering 11,907 (68.76%) $105.35
NA9 California Emissions 1,758 (10.15%) $36.90
P02 Deluxe Wheel Covers 3,467 (20.02%) $57.95
PT7 White Stripe Tires, F70x15, nylon 6,589 (38.05%) $31.30
PU9 White Letter Tires, F70x15, nylon 7,985 (46.11%) $33.15
T60 Heavy Duty Battery (standard with LS5) 165 (0.95%) $15.80
U69 AM-FM Radio 14,529 (83.91%) $172.75
U79 AM-FM Radio, stereo 2,462 (14.22%) $278.10
UA6 Alarm System n/a $31.60
ZR1 Special Purpose Engine Package 25 (0.14%) $968.95

Total Production: 17,316
Coupe: 10,668 (61.61%)
Convertible: 6,648 (38.39%)

Notes: Base Corvette Coupe with 350 cu. in. 300 hp engine and wide ratio four speed manual transmission: $5,192.00.
Base Corvette Convertible with 350 cu. in. 300 hp engine and wide ratio four speed manual transmission: $4,849.00.

Colors

Code Exterior Quantity Interior Soft Top Wheels
972 Classic White n/a Blue / Black / Brown / Green / Red / Saddle Black / White / Beige Silver
974 Monza Red n/a Black / Brown / Red / Saddle Black / White / Beige Silver
975 Marlboro Maroon n/a Black / Brown / Saddle Black / White / Beige Silver
976 Mulsanne Blue n/a Blue / Black Black / White / Beige Silver
979 Bridgehampton Blue n/a Blue / Black Black / White / Beige Silver
982 Donnybrooke Green n/a Black / Brown / Green / Saddle Black / White / Beige Silver
984 Daytona Yellow n/a Black / Green Black / White / Beige Silver
986 Cortez Silver n/a Blue / Black / Brown / Green / Red / Saddle Black / White / Beige Silver
991 Ontario Orange n/a Black / Saddle Black / White / Beige Silver
992 Laguna Gray n/a Blue / Black / Brown / Green / Red / Saddle Black / White / Beige Silver
993 Corvette Bronze n/a Black Black / White / Beige Silver

1970 Corvette