1980 Corvette
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1980 Corvette Performance & Specifications

Powertrain, Steering, Brakes, Dimensions, & Suspension

Mechanically, the 1980 Corvette suffered some because of increasingly stringent emissions regulations. The base L48 engine, which had been rated at 195 horsepower in 1979, lost five bhp as a result of emissions tuning – taking it back to 190HP at 4,400rpm and 280lbs/ft. of torque at 2,400rpm.  Worse was the impact that California emission standards had on the Corvette.

Read More: 1980 Chevrolet Corvette Research Center

1980 Corvette Specifications

1980 Corvette Main Specs

MODEL: 1980 Chevrolet Corvette
BODY STYLE: Two-door coupe, front engine, rear wheel drive
MANUFACTURING LOCATION: St. Louis, Missouri
CONSTRUCTION: Uniconstruction: fiberglass reinforced plastic (FRP or “fiberglass”) body backboned by a steel cage outlining the the passenger compartment. Principal members – steel front and plastic rear – underbody, front and rear end assemblies, dash panel and hinge pillars are bonded, riveted, and bolted together and to each other. Hood is plastic with bonded plastic reinforcement. Car includes two removable roof panels. Doors are plastic, double paneled, reinforced with steel at hinge and lock locations. Front hinged.
VEHICLE NUMBERS (VIN):
1Z878AS400001 – 1Z878AS440614 (coupe)
ENGINE SUFFIX: ZAK: 350 CUBIC INCH, 190 HORSEPOWER, AUTOMATIC TRANSMISSION
ZAM: 350 CUBIC INCH, 190 HORSEPOWER, MANUAL TRANSMISSION
ZBC: 350 CUBIC INCH, 230 HORSEPOWER, AUTOMATIC TRANSMISSION
ZBD: 350 CUBIC INCH, 230 HORSEPOWER, UNCERTAIN USAGE
ZCA: 305 CUBIC INCH, 180 HORSEPOWER, CALIFORNIA EMISSIONS
ENGINE BLOCK NUMBER: 14010207: 350 CUBIC INCH, 190 HORSEPOWER, 230 HORSEPOWER, LATE PRODUCTION
3970010: 350 CUBIC INCH, 190 HORSEPOWER, 230 HORSEPOWER
4715111: 305 CUBIC INCH, 180 HORSEPOWER, AUTOMATIC TRANSMISSION, CALIF. EMISSIONS
HEAD NUMBER: 462624: 350 CUBIC INCH, 190 HORSEPOWER, 230 HORSEPOWER
14014416: 305 CUBIC INCH, 180 HORSEPOWER
CARBURETOR NUMBERS: ROCHESTER Q-jet #17080204: 350 C.I., 190HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #17080207: 350 C.I., 190HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #17080228: 350 C.I., 230HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #17080504, 17080517: 305 C.I., 180HP, AUTO. TRANS, CALIF. EMISSIONS
DISTRIBUTOR NUMBER: 1103287: 350 CUBIC INCH, 190HP,MANUAL TRANSMISSION
1103352: 350 CUBIC INCH, 190HP, AUTOMATIC TRANSMISSION
1103353: 350 CUBIC INCH, 190HP, AUTOMATIC TRANSMISSION
1103368: 305 CUBIC INCH, 180HP, AUTOMATIC TRANSMISSION, CALIFORNIA EMISSIONS
1103435: 350 CUBIC INCH, 230 HP, AUTOMATIC TRANSMISSION
ALTERNATOR NUMBER: 1101041, 1101075, 1101085, 1101088, 1103122
AXLE IDENTIFICATION NUMBER OF: 3.07:1 RATIO
OH: 3.07:1 RATIO
PRODUCTION ENDING VEHICLE: SEP., 1979: 400011, OCT., 1979:404267, NOV., 1979: 408343, DEC., 1979: 411652, JAN., 1980: 416198, FEB., 1980: 420057, MAR., 1980: 424380, APR., 1980: 427800, MAY., 1980: 431152, JUNE, 1980: 434509, JULY, 1980: 438049, AUG., 1980: 440614

1980 Corvette Powertrain Specifications

Engine L48 L82 LG8
RPO LG8 RPO L48 RPO L82 RPO LG8
Manufacturing Location Flint, Michigan Flint, Michigan Flint, Michigan
Type V-8 OHV V-8 OHV V-8 OHV
Piston Displacement (Litres): 5.7 Litres 5.7 Litres 5.0 Litres
Cylinders 8 8 8
Compression Ratio: 8.2:1 9.0:1 8.6:1
Firing Order: 1-8-4-3-6-5-7-2 1-8-4-3-6-5-7-2 1-8-4-3-6-5-7-2
Idling Speed
– Manual Trans. (In Neutral): 700 RPM — RPM — RPM
– Automatic Trans (In Drive): 500 RPM — RPM 650 RPM
(PSI) @ Cranking Speed, Engine Hot: 150 PSI 150 PSI
Powerplant Mount Locations: 2 front and 1 rear, compression type. 2 front and 1 rear, compression type. 2 front and 1 rear, compression type.
Carburetor: 4-Barrel 4-Barrel 4-Barrel
Power & Torque
Net Brake Horsepower @ RPM: 190 BHP @ 4000 RPM 230 BHP @ 5200 RPM 180 BHP @ 4200 RPM
Net Torque (lb/ft) @ RPM: 280 lb/ft @ 2400 RPM 275 lb/ft @ 3600 RPM 255 lb/ft @ 2000 RPM
Cylinder Block
– Material Light weight cast iron Light weight cast iron Light weight cast iron
– Bore 3.9995 – 4.0025 3.9995 – 4.0025 3.7355-3.7385
– Bore Spacing (Centerline to Centerline:) 4.4 4.4 4.4
– Bearing Caps (Number & Material): 5, Gray Iron; 2-bolts 5, Gray Iron; 2-bolts 5, Gray Iron; 2-bolts
– Water Jackets Full length around each cylinder Full length around each cylinder Full length around each cylinder
Cylinder Head 
– Material Light weight cast iron Light weight cast iron Light weight cast iron
– Bolt Number 34 34 34
– Bolt Size .4375 diameter; 14 threads/inch .4375 diameter; 14 threads/inch .4375 diameter; 14 threads/inch
Inlet Manifold  
– Material Aluminum Aluminum Aluminum
– Type 8 port, double deck 8 port, double deck 8 port, double deck
Exhaust Manifold
– Material Cast Alloy Iron Cast Alloy Iron Cast Alloy Iron
– Type Rams Horn Rams Horn Stamped and tubular
– Outlet Diameter (Nominal): 2.50 2.50 2.50
Crankshaft  
– Material: Nodular Cast Iron Forged Steel Nodular Cast Iron
– End Play: .002 – .007 .002 – .007 .002 – .007
– Counter Weights: 6 6 6
– Crank Arm Length: 1.74 1.74 1.74
– Torsional Damper: Sintered Iron Sintered Iron Sintered Iron
– Timing Gear: Steel; sprocket and chain Steel; sprocket and chain Steel; sprocket and chain
– Pulley Pitch Diameter: 7.58 6.64 7.58
Main Bearings   
– Material Premium Aluminum Premium Aluminum Premium Aluminum
– Type Precision Removable Precision Removable Precision Removable
Camshaft   
– Material Cast Alloy Iron Cast Alloy Iron Cast Alloy Iron
– Drive Chain Chain Chain
– Gear Nylon Teeth with Aluminum Hub Nylon Teeth with Aluminum Hub Nylon Teeth with Aluminum Hub
– Lobe Lift: .2600 (Inlet), .2733 (Exhaust) .3000 (Inlet), .3067 (Exhaust) .2484 (Inlet), .2667 (Exhaust)
– Bearings: 5; Steel Backed Babbitt 5; Steel Backed Babbitt 5; Steel Backed Babbitt
Pistons  
– Material: Cast Aluminum Forged Aluminum Cast Aluminum
– Head Type: Sump Flat, notched Sump
– Skirt Type: Closed Closed Closed
– Top Land Clearance: .0235 – .0325 .0305 – .0395 .0245 – .0335
– Skirt Clearance: .0007 – .0017 .0046 – .0056 .0008 – .0042
– Piston Pin Material: Chromium Steel Chromium Steel Chromium Steel
– Pin Mounting: Locked in rod by shrink fit Locked in rod by shrink fit Locked in rod by shrink fit
Valve Timing (Crankshaft/Deg.)   
– Inlet Valve
— Opens – BTC: 28 degrees 52 degrees 28 degrees
— Closes – ABC: 72 degrees 114 degrees 64 degrees
— Duration: 280 degrees 346 degrees 272 degrees
– Exhaust Valve
— Opens – BTC: 78 degrees 98 degrees 78 degrees
— Closes – ABC: 30 degrees 62 degrees 30 degrees
— Duration: 288 degrees 340 degrees 288 degrees

1980 Corvette Manual Transmission/Gear Ratios

Manual Transmission

Transmission Type:
4-Speed (L48)
Order Code:
RPO M18
Case Material: Aluminum
Lubricant
– Type 80W or 80W90 Gear Lubricant
– Capacity 3.4 pints
Gears
– Type: Helical
– Material: Forged Steel, Hardened
– Synchronization: All Forward Gears
– Constant Mesh Gear: All Forward Gears
– Sliding Gears: Reverse
Gear Ratios 
– 1st Gear:
2.88:1
– 2nd Gear:
1.91:1
– 3rd Gear:
1.33:1
– 4th Gear:
1.00:1
– Reverse:
2.78:1

Clutch

Clutch Stats
Type Single Dry Disk Centrifugal
Spring Pressure (lbs) 2,100 – 2,300 (for L48) / 2,450-2,750 (for L82)
Lining area (sq. in.) 101.6 (for L48) / 123.7 (for L82)

Automatic Transmission

Transmission Type:
3 Speed Automatic Transmission L48 & L82
Order Code:
MX1
Type: Automatic hydraulic torque converter with compound planetary gear system – three forward speeds and reverse.
Case Material: Aluminum
Parking Lock Type: Locking Pawl / P (Park)-R (Reverse)-N (Neutral)-D (Drive)-L2 (Low 2)-L1 (Low 1)
Selector Lever Location: Center Floor Console
Lubricant
– Type Dexron II (at time of release.  Dexron III may also be used.)
– Capacity 20 Pints (Dry) / 8 Pints (Refill)
Clutches
– Type: Four, multiple disk
– Material: Steel with bonded organic facings (Drive Plates) / Flat Steel (Driven Plates)
– Forward Clutch: 5 each – Drive and Driven Plates
– Direct Clutch: 4 each – Drive and Driven Plates
– Intermediate Clutch: 3 each – Drive and Driven Plates
– Low & Reverse Clutch: 5 each – Drive and Driven Plates
– Release Spring Radial row steel coil
Planetary Gear Set
– Reaction Carrier Assembly:
4 Steel Pinion: gears
– Output Carrier Assembly::
4 Steel Pinion: gears
– Intermediate Band:
Circular Steel with Organic Lining
Range / Gear Ratios:
– D (Drive)
2.52:1 (first gear) – 1.52:1 (second gear) – 1.00:1 (third gear)
– L2 (Low Two): 2.52:1 (first gear) – 1.52:1 (second gear)
– L1 (Low One): 2.52:1 (first gear)
– R (Reverse):
1.93:1

1980 Corvette Wheels, Suspension & Brakes

Frame & Front Suspension

All welded, full length, ladder constructed frame with five (5) cross-members.  Side rails and intermediate cross-members box section; front crossmember box girder section.  Eight (8) body mounting points.

Independent, SLA type, coil springs with center mounted shock absorbers, spherical joint steering knuckle pivots.

Front Suspension
Wheel Travel (Design):
– Total: 7.70
– Jounce: 4.76
– Rebound: 2.94
Wheel to spring, travel ratio: 1.92:1
Control Arms Reinforced steel stamping with pre-loaded steel encased rubber bushings at pivot
Shock Absorbers
– Type: Direct, double acting, hydraulic
– Piston Diameter: 1.00
Stabilizer Bar
– Type: Link
– Material: HR Steel
– Diameter: 0.875
– Bushing Material: Rubber
Front Wheel Alignment (Curb)
– Camber (degrees): P0.709 +/- 1/2
– Caster (degrees): P2.405 +/- 1/2
– Toe-in (total): 0 +/- 1.32
– Steering Axis Inclination (degrees): 7.683 @ 5° camber

Rear Axle & Rear Suspension

Fixed differential housing hypoid ring and pinion gear set, tubular articulating inner axle shafts and short solid outer shafts with integral drive flange, independently sprung rear wheels.
Full independent with frame-anchored differential.  Position of each wheel established by 3 links; tubular axle drive shafts, transverse strut rods,and torque control arms.  Vertical suspension loads taken by transverse leaf spring.  Built-in camber adjustment at strut rod inner ends.
Rear Suspension
Shock Absorbers
– Type: Direct, double-acting, hydraulic
– Piston Diameter: 1.00
Wheel Travel
– Total 6.50 inches
– Jounce 3.70 inches
– Rebound 2.80 inches
Rear Spring
– Type: Variable rate, 10-leaf
– Material: Chrome carbon steel, heat treated
– Length (between eye centers): 48.60 inches
– Width: 2.50 inches
– Design Load (lbs @ camber): [email protected]
Rear Wheel Alignment (Curb)
– Camber (degrees): N7/8 +/- 1/4
– Toe-in (total): 0 +/- 1/32

Brakes

Brake Specs
Brake Type: Disc Front and Rear; Power Assist Std.
System: 4-wheel caliper disc brake dual hydraulic system with pressure differential and warning light.
Front Brakes:
-Type: Double faced disc spaced by integrally cast radial cooling passages.
– Material: Cast Iron
– Diameter and Width: 11.75 in. x 1.25 in.
– Lining Material: Molded asbestos (NOTE: Factory specified material.)
– Method of Attachment: Riveted.
Rear Brake
-Type: Double faced disc spaced by integrally cast radial cooling passages.
– Material: Cast Iron
– Diameter and Width: 11.75 in. x 1.25 in.
– Lining Material: Molded asbestos (NOTE: Factory specified material.)
– Method of Attachment: Riveted.
Parking Brake
– Type: Drums; inboard of disc rotors on axle shafts.  Internal expanding shoes, mechanically actuated.
– Control: Lever; floor mounted between bucket seats.

Steering

Steering Specs
Steering Wheel
– Wheel Type: 4-Spoke with center horn button.
– Diameter: 14.75 in. x 14.25 in.
Steering Gear
– Type: Integral, recirculating ball nut with hydraulic pressure provided from a vane type pump.
– Ratio: 16.1:1
– Overall Ratio: 17.6:1
– Wheel Turns, Lock to Lock: 2.92
Turning Diameters
– Outside Front, Wall to Wall: 38.6
– Outside Front, Curb to Curb: 37.0
– Inside Rear, Wall to Wall: 11.4
– Inside Rear, Curb to Curb: 10.5
– Manual 3.4
– Power 2.92
Turning Diameter 37 ft. (outside front), 38.6 ft. (outside front)

Wheels & Tires

Wheels & Tires Specs
Wheels
– Type: Short spoke spider, welded steel
– Attachment to Hub: 5 hex nuts, 7/16-20 UNF 2-B, arranged on a 4.75 dia. bolt circle.
– Offset: N-0.50
– Rim Size: 15 x 8.00
– Spare: 15 x 5.00
Tires (Standard)
– Construction: Steel belted radial
– Size and Ply Rating: P225/70R15
– Sidewall (Base): Blackwall
– Sidewall (Optional): White Letter
Tires (Optional)
– Construction: Aramid fabric belted radial
– Size: P255/60R15
– Sidewall: White Letter

1980 Corvette

1980 Corvette Exterior Dimensions

Coupe Dimensions

Exterior Dimensions (Coupe) Interior Dimensions (Coupe)
Wheelbase: 98.0 Inches Headroom: 36.2 Inches
Overall Length: 185.2 Inches Shoulder Room: 47.5 Inches
Total Body Width: 69.0 Inches Hip Room: 49.9 Inches
Overall Height: 48.0 Inches Leg Room: 42.1 Inches
Front Track Width: 58.7 Inches
Rear Track Width: 59.5 Inches
Min. Ground Clearance 4.3 Inches

Capacities

Capacities
Passenger Capacity 2 – Driver & Passenger
Curb Weight (lbs) 3,519
Interior Passenger Volume (cu. ft) 8.4
Interior Trunk Volume (cu. ft) 24 (approximately)
Fuel Capacity (gallons): 23.7
Coolant capacity without heater (qts.) 21.6 (automatic transmission)
20.7 (manual transmission)
Battery: 12 Volt, 3,500 Watts (Standard)
12 Volt, 4,000 Watts (Heavy Duty)
Generator Output: 42 Amps

1980 Corvette

1980 Corvette Performance Results

4-Speed Transmission
L48 L82
Performance weight (lbs.)
3801 3808
Pounds/net horsepower
19.49 16.92
Pounds/cu.in. piston displacement
10.86 10.88
Net horsepower/cu.in. displacement
.557 .643
Power displacement (cu.ft./mile)
258.6 284.8
Displacement factor (cu.ft./mile)
136.1 149.6
0 – 60 mph (seconds)
Top Speed (mph)
Quarter Mile (secs @ mph)

 

3-Speed Transmission
L48 L82
Performance weight (lbs.)
3818 3825
Pounds/net horsepower
19.58 17.00
Pounds/cu.in. piston displacement
10.91 10.93
Net horsepower/cu.in. displacement
.557 .643
Power displacement (cu.ft./mile)
273.2 273.2
Displacement factor (cu.ft./mile)
143.1 142.9
0 – 60 mph (seconds)
7.3
Top Speed (mph)
132
Quarter Mile (secs @ mph)
15.6 @ 91

1980 Corvette