1970 LT1 Corvette Convertible
Super RARE 1970 LT1 Corvette convertible, match #,s 350/370hp, 4 spd, 2 tops, 1 of…
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1970 LT1 Corvette Convertible
Super RARE 1970 LT1 Corvette convertible, match #,s 350/370hp, 4 spd, 2 tops, 1 of less than 500 produced out of the 1287 total LT1 production in 1970. NCRS 2nd flight award, Bloomington Silver certified.
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RARE
1970 LT1 Corvette Convertible
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Price
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Description
You are looking at a super rare 1970 LT1 Corvette Convertible. 1 out of less than 500 produced out of the total 1287 LT1 Corvettes in production for the year 1970. This all matching numbers car sports the all well know LT1 powertrain that consists of many high performance heavy duty components including: solid lifters, heavy duty starter, forged TRW aluminum pistons, 11:1 compression, 4 bolt main cap block, tuftrided crank, special high lift cam, high rise aluminum intake, holley carb, baffled oil pan, transistor ignition, larger radiator, high volume oil and fuel pumps and 2 1/2″ exhaust. (Corvette produced a beast of a small block V8 for the 1970 LT1 and ZR1 Corvettes.) All backed by a M21 manual 4 speed close ratio transmission. This LT1 was also produced in code correct 992 Laguna Gray paint with code correct 400 Black Vinyl interior and a painted hard top with interior matching black soft top. A frame off nut and bolt restoration was complete on this car back in 2013 and achieved a NCRS second flight judging score of 92.5 in 2014 along with a Silver Bloomington certificate shortly after. Take some time to look over all photos below to see numbers, date codes and vin stamps to see how correct this car is. If you are in the market for a rare piece of American Muscle Car history to drive, collect or invest in this is it.
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770-427-VETT
1970 Corvette Specs
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. |
|
|
|
| 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 |
|
|
|
| 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) +99 lb. (With LS5 Engine & Four Speed Transmission) |
| 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. +29 lb. |
| 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. |
| 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 454 cubic inch LS5 Engine |
| 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 Max: 26° @ 3,800 RPM 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) Start: 7.00 inches Hg (LS5 Engine) |
| 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. |
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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 |
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