Part 2: 1958 Specs
1958 CORVETTE – SPECIFICATIONS
1958 CORVETTE MAIN SPECS
MODEL: 1958 Chevrolet Corvette
BODY STYLE: Two-door convertible, front engine, rear wheel drive
MANUFACTURING LOCATION: St. Louis, Missouri
CONSTRUCTION: Fiberglass Reinforced Plastic (FRP or “fiberglass”) body, steel frame with steel and chrome structural & chassis components.
VEHICLE NUMBERS (VIN): J58S100001 – J58S109168
VIN PREFIX: CQ: 283 CUBIC INCH, 230 HORSEPOWER, MANUAL TRANSMISSION
CR: 283 CUBIC INCH, 250 HORSEPOWER, MANUAL TRANSMISSION
CS: 283 CUBIC INCH, 290 HORSEPOWER, MANUAL TRANSMISSION
CT: 283 CUBIC INCH, 245 HORSEPOWER, MANUAL TRANSMISSION
CU: 283 CUBIC INCH, 270 HORSEPOWER, MANUAL TRANSMISSION
DG: 283 CUBIC INCH, 230 HORSEPOWER, AUTOMATIC TRANSMISSION
DH: 283 CUBIC INCH, 250 HORSEPOWER, AUTOMATIC TRANSMISSION
DJ: 283 CUBIC INCH, 245 HORSEPOWER, AUTOMATIC TRANSMISSION
ENGINE BLOCK NUMBER: 3737739, 3756519, 3748770
HEAD NUMBER: 3725306: 265 CUBIC INCH, 210 HP, 225 HP (2-BOLT EXHAUST MANIFOLDS)
3731762: 265 CUBIC INCH, 225 HP, 240 HP (3-BOLT EXHAUST MANIFOLDS)
CARBURETOR NUMBERS: CARTER 2613S [HASHTAG]#3741089[/HASHTAG]: 283 CUBIC INCH, 270 HP, FRONT CARBURETOR
CARTER 2614S [HASHTAG]#3741090[/HASHTAG]: 283 CUBIC INCH, 270 HP, REAR CARBURETOR
CARTER 2626S [HASHTAG]#3744002[/HASHTAG]: 283 CUBIC INCH, 245 HP, FRONT CARBURETOR
CARTER 2627S [HASHTAG]#3744004[/HASHTAG]: 283 CUBIC INCH, 245 HP, REAR CARBURETOR
CARTER 2669S [HASHTAG]#3746384[/HASHTAG]: 283 CUBIC INCH, 230 HP
FUEL INJECTION NUMBER: ROCHESTER 7014800: 283 CUBIC INCH, 250 HP
ROCHESTER 7014800R: 283 CUBIC INCH, 290 HP, EARLY PRODUCTION
ROCHESTER 7014900: 283 CUBIC INCH, 250 HP
ROCHESTER 7014900R: 283 CUBIC INCH, 290 HP
ROCHESTER 7014960: 283 CUBIC INCH, 290 HP
ROCHESTER 7017200: 283 CUBIC INCH, 250 HP, LATE PRODUCTION
DISTRIBUTOR NUMBER: 1110890: 283 CUBIC INCH, 230 HORSEPOWER
1110891: 283 CUBIC INCH, 245 HORSEPOWER, 270 HORSEPOWER
1110908: 283 CUBIC INCH, 290 HORSEPOWER, EARLY PRODUCTION
1110914: 283 CUBIC INCH, 290 HORSEPOWER
1110915: 283 CUBIC INCH, 250 HORSEPOWER
GENERATOR NUMBER: 1102043: 283 CUBIC INCH, 230 HP, 245 HP, 250 HP, 270 HP
1102059: 283 CUBIC INCH, 290 HORSEPOWER
AXLE IDENTIFICATION NUMBER AH: 3-SPEED MANUAL TRANSMISSION (3.70:1 RATIO)
AE: POWERGLIDE AUTOMATIC TRANSMISSION (3.55:1 RATIO)
AN: LIMITED SLIP DIFFERENTIAL (3.70:1 RATIO)
AP: LIMITED SLIP DIFFERENTIAL (4.11:1 RATIO)
AQ: LIMITED SLIP DIFFERENTIAL (4.56:1 RATIO)
AS: LSD, HEAVY DUTY SUSPENSION AND BRAKES, (3.70:1 RATIO)
AT:LSD, HEAVY DUTY SUSPENSION AND BRAKES, (4.11:1 RATIO)
AU:LSD, HEAVY DUTY SUSPENSION AND BRAKES, (4.56:1 RATIO)
PRODUCTION ENDING VEHICLE: OCT, 1957: 100486, NOV, 1957: 101443, DEC, 1957: 102511, JAN, 1958:103677, FEB, 1958: 104789, MAR, 1958: 105779, APR, 1958: 106544, MAY, 1958: 107489, JUN, 1958: 108192, JUL, 1958: 108840, AUG, 1958: 109168, MAY, 1958: 107489
1958 CORVETTE PRICE & OPTIONS
CODE DESCRIPTION QUANTITY RETAIL PRICE
867 Base Corvette Convertible 9,168 $3,591.00
101 Heater 8,014 $96.85
102 AM Radio, signal seeking 6,142 $144.45
107 Parking Brake Alarm 2,883 $5.40
108 Courtesy Lights 4,600 $6.50
109 Windshield Washers 3,834 $16.15
276 Wheels, 15 x 5.5 (5) 404 $0.00
290 Whitewall Tires, 6.70 x 15 7,428 $31.55
313 Powerglide Automatic Transmission 2,057 $188.30
419 Auxiliary Hardtop 5,607 $215.20
426 Power Windows 649 $59.20
440 Two-Tone Paint Combination 3,422 $16.15
469 283ci, 245HP Engine (2×4 Carburetors) 2,436 $150.65
469C 283ci, 270HP Engine (2×4 Carburetors) 978 $182.95
473 Power Operated Folding Top 1,090 $139.90
579 283ci, 250HP Engine (Fuel Injection) 504 $484.20
579D 283ci, 290HP Engine (Fuel Injection) 1,007 $484.20
677 Positraction Rear Axle, 4.56:1 1,123 $48.45
678 Positraction Rear Axle, 4.11:1 2,518 $48.45
679 Positraction Rear Axle, 4.56:1 370 $48.45
684 Heavy Duty Racing Suspension 144 $780.10
685 4-Speed Manual Transmission 3,764 $215.20
1958 CORVETTE EXTERIOR/INTERIOR COLOR
COLOR CODES
Exterior Total Body Cove (Optional) Soft Top Wheels Interior Colors
Charcoal 1,631 Inca Silver Black, White Silver Charcoal, Blue-Grey, Red
Snowcest White 2,477 Inca Silver Black, White, Blue-Gray Silver Charcoal, Blue-Grey, Red
Silver Blue 2,006 Inca Silver Black, White Silver Charcoal, Blue-Grey
Regal Turquoise 510 Snowcrest White Black, White Silver Charcoal
Panama Yellow 455 Snowcrest White Black, White Silver Charcoal
Signet Red 1,399 Snowcrest White Black, White Silver Charcoal, Red
Tuxedo Black 493 Inca Silver Black, White Silver Charcoal, Red
Inca Silver 193 – Black, White Silver Charcoal, Red
EXTERIOR COLOR TEMPLATES
INTERIOR COLOR TEMPLATES
1958 CORVETTE POWERTRAIN SPECIFICATIONS
Description 4-barrel Carb Dual Carb Dual Carb w. Special Cam Fuel Injection
Fuel Injection w. Special Cam
Standard RPO 469 RPO 469C RPO 469C RPO 579D
Type: 90 V 90 V 90 V 90 V 90 V
Number of Cylinders 8 8 8 8 8
Displacement (cid): 283 283 283 283 283
Horsepower (gross @ rpm): 230hp @ 4,800 245hp @ 5,000 270hp @ 6,000 250hp @ 5,000 290hp @ 6,200
Torque (lbs.-ft. @ rpm): 300 @ 3,000 300 @ 3,800 285 @ 4,200 305 @ 3,800 290 @ 4,400
Bore Spacing (C/L to C/L) 4.4 inches 4.4 inches 4.4 inches 4.4 inches 4.4 inches
Bore x stroke (in.): 3.875 x 3.00 3.875 x 3.00 3.875 x 3.00 3.875 x 3.00 3.875 x 3.00
Redline (rpm): – – – – –
Compression ratio: 9.5:1 9.5:1 9.5:1 9.5:1 9.5:1
Idle Speed (RPM) 475 in neutral w/3-speed 475 in neutral w/3-speed 475 in neutral w/3-speed 475 in neutral w/3-speed 475 in neutral w/3-speed
Automatic 779 779 779 779 779
Manual 678 678 678 678 678
Firing Order: 18436572 18436572 18436572 18436572 18436572
Cylinder Number System; – – – – –
Left Bank: 1-3-5-7 1-3-5-7 1-3-5-7 1-3-5-7 1-3-5-7
Right Bank: 2-4-6-8 2-4-6-8 2-4-6-8 2-4-6-8 2-4-6-8
Recommended Fuel: 94-96 Premium Octane 94-96 Premium Octane 94-96 Premium Octane 94-96 Premium Octane 94-96 Premium Octane
EPA – Three-Speed Manual
Transmission – Average: 12.9 mpg (Motor Trend) 12.9 mpg (Motor Trend) – 14.9 mpg (Motor Trend) 13.9 mpg (Motor Trend)
CARBURETOR ENGINE COMPONENT SPECIFICATIONS
Description Standard 230hp RPO 469 245hp RPO 469C 270hp
Upper Compression Ring:
Material Cast alloy iron Cast alloy iron Cast alloy iron
Width .184 — .194 .184 — .194 .184 — .194
Thickness .0775 — .0780 .0775 — .0780 .0775 — .0780
Gap .010 — .020 .010 — .020 .010 — .020
Ring Clearance .0012 — .0017 .0012 — .0017 .0012 — .0017
Valve Springs:
Length & Pressure
Valve closed 1.696@ 69 — 79 lb. 1.696@ 69 — 79 lb. 1.696@ 69 — 79 lb.
Valve open 1.306@ 159 — 169 lb. 1.306@ 159 — 169 lb. 1.306@ 159 — 169 lb.
Free length 2.08 2.08 2.08
Damper:
– Number of coils 3.874 — 4.12 3.874 — 4.12 3.874 — 4.12
– Free length 2.00 2.00 2.00
Tappets:
Type Hydraulic Hydraulic Hydraulic
Material Steel Steel Steel
Carburetor:
Make Carter Carter Carter
Model
– front – 3744002 3744002
– rear – 3744004 3744004
Type 4 barrel, down-draft 4 barrel 4 barrel
Choke Automatic Automatic Automatic
Camshaft:
Ramp inlet
Opening .00474, 10° long .00474, 10° long .0067, 18° long
Closing .00670, 15° long .00670, 15° long .0067, 18° long
Ramp exhaust
Opening .00474, 10° long .00474, 10° long .0107, 29° long
Closing .00670, 15° long .00670, 15° long .0107, 29° long
Tappet Lift
– Inlet .26581 .26581 .2625
– Exhaust .26581 .26581 .2625
Valve lift
Inlet 0.3987 0.3987 0.39375
Exhaust 0.3987 0.3987 0.39375
Valve lash (normal driving)
Inlet Zero Zero .008 hot
Exhaust Zero Zero .018 hot
Timing Diagram Data:
Inlet
Opens (theoretical) 12° 30′ BTC 12° 30′ BTC 35° BTC
Closes (theoretical) 57° 30′ ABC 57° 30′ ABC 72° ABC
Exhaust
Opens (theoretical) 54° 30′ BBC 54° 30′ BBC 76° BBC
Closes (theoretical) 15° 30′ ATC 15° 30′ ATC 31° ATC
Clutch:
Type Semi-centrifugal Semi-centrifugal Semi-centrifugal
Number of coil springs 9 9 9
Spring pressure (lbs.) 1620 Initial 1620 Initial 1620 Initial
Drive Lug Lug Lug
Lining area (sq. in.) 90.72 90.72 90.72
Rated torque capacity (lb. ft.) 326 326 326
Air Cleaner:
Make and Type AC oil wetted AC oil bath AC oil bath
Capacity – 1 Pint 1 Pint
Filter Element Aluminum wire cactus fiber cactus fiber
Oil Filter:
Make AC, Full flow AC, Full flow AC, Full flow
Capacity (Quartz) 1-1/2 1-1/2 1-1/2
Dual Exhaust System:
Muffler Type Diffusion & resonance,
reverse flow Diffusion & resonance,
reverse flow Diffusion & resonance,
reverse flow
Body Size 24×4.06 24×4.06 24×4.06
Manifold Center take down each branch serving two cylinders Center take down each branch serving two cylinders Center take down each branch serving two cylinders
Exhaust Pipe Size O.D 2.0 2.0 2.0
Tall Pipe I.D 1.81 1.81 1.81
Suspension Individual, rubber insulated
mountings. Individual, rubber insulated
mountings. Individual, rubber insulated
mountings.
Fuel System:
Fuel Tank Two stamped pans
seam welded Two stamped pans
seam welded Two stamped pans
seam welded
Capacity (gallons) 16.4 16.4 16.4
Mounting Support by two straps attached to underbody behind seat Support by two straps attached to underbody behind seat Support by two straps attached to underbody behind seat
Filler In body left side, to rear of driver’s door In body left side, to rear of driver’s door In body left side, to rear of driver’s door
Cooling System:
Radiator core
Make Harrison Harrison Harrison
Type Cellular Cellular Cellular
Size .22x.550×2.00 .22x.550×2.00 .22x.550×2.00
Frontal Area (sq. in) 380 380 380
Capacity 16.5 qts. with heater 16.5 qts. with heater 16.5 qts. with heater
FUELIE (FUEL INJECTED) ENGINE COMPONENT SPECIFICATIONS
Description (RPO 579 250hp) (RPO 579D 290hp)
Upper Compression Ring:
Material Cast alloy iron Cast alloy iron
Width .184 -.194 .184 – .194
Thickness 0775 – .0780 0775 – .0780
Gap .010 – 0.020 .010 – 0.020
Ring Clearance Grove .0012 – .0017 .0012 – .0017
Valve Springs:
Length & Pressure
Valve closed 1.696@ 69 — 79 lb 1.696@ 69 — 79 lb
Valve open 1.306@ 159 — 169 lb. 1.306@ 159 — 169 lb.
Free length 2.08 2.08
Damper:
Number of coils 3.874 — 4.12 3.874 — 4.12
Free length 2.00 2.00
Tappets:
Type Hydraulic Hydraulic
Material Steel Steel
Manifold assembly, inlet:
Material Cast aluminum Cast aluminum
Fuel:
System Fuel Injection Fuel Injection
Make Rochester Products Rochester Products
Fuel Filter:
Make AC AC
Model GF43 GF43
Location Mounted on engine top cover Mounted on engine top cover
Camshaft:
Ramp inlet
Opening .00474, 10° long .00474, 10° long
Closing .00670, 15° long .00670, 15° long
Ramp exhaust
Opening .00474, 10° long .0107, 29° long
Closing .00670, 15° long .0107, 29° long
Tappet Lift
Inlet .26581 .2625
Exhaust .26581 .2625
Valve Lift
Inlet .3987 .39375
Exhaust .3987 .39375
Valve lash (normal driving)
Inlet Zero .008 hot
Exhaust Zero .018 hot
Timing Diagram Data:
Inlet
Opens (theoretical) 12° 30′ BTC 35° BTC
Closes (theoretical) 57° 30′ ABC 72° ABC
Exhaust
Opens (theoretical) 54° 30′ BBC 76° BBC
Closes (theoretical) 15° 30′ ATC 31° ATC
Clutch:
Type Semi-centrifugal Semi-centrifugal
Number of coil springs 9 9
Spring pressure (lbs.) 1620 initial 1620 initial
Drive Lug Lug
Lining area (sq. in.) 90.72 90.72
Rated torque capacity (lb. ft.) 326 326
Air Cleaner:
Make AC AC
Type Dry Dry
Filter Element Paper Paper
Oil Filter:
Make AC, Full flow AC, Full flow
Capacity (Quartz) 1-1/2 1-1/2
Dual Exhaust System:
Muffler Type Diffusion & resonance, reverse flow Straight thru
Body Size 24×4.06
Manifold Center take down each branch serving two cylinders
Exhaust Pipe Size O.D 2.0
Tall Pipe I.D 1.81
Suspension Individual, rubber insulated
mountings.
Fuel System:
Fuel Tank Two stamped pans seam welded Two stamped pans seam welded
Capacity (gallons) 16.4 16.4
Mounting Support by two straps attached to underbody behind seat Support by two straps attached to underbody behind seat
Filler In body left side, to rear of driver’s door In body left side, to rear of driver’s door
Cooling System:
Radiator core
Make Harrison Harrison
Type Cellular Cellular
Size .22x.550×2.00 .22x.550×2.00
Frontal Area (sq. in) 380 380
Capacity 16.5 qts. with heater 16.5 qts. with heater
MANUAL TRANSMISSION / GEAR RATIOS
3-Speed Close Ratio 4-Speed (RPO 685)
1st Gear: 2.21:1 2.20:1
2nd Gear: 1.32:1 1.66:1
3rd Gear: 1.00:1 1:31:1
4th Gear: N/A 1.00:1
Reverse: 2.21:1 2.25:1
POWERGLIDE AUTOMATIC TRANSMISSION RPO 313/ GEAR RATIOS
Drive 1.82-1:1
Low 1.82:1
Reverse 1.82:1