1975 CORVETTE

  • Major changes for 1975 involved the following:
    • improved bumpers which looked the same
    • a catalytic converter
    • a new High-Energy ignition
    • the speedometer included kilometers-per-hour. In the USA, mph was the dominant display with km/hr in smaller characters and the odometer registering miles. In Canada, the reverse was true.
    • This was the last year for the Corvette convertible
    • Ten exterior colors were available
      • Bright Blue
      • Bright Green
      • Bright Yellow
      • Classic White
      • Dark Red
      • Medium Saddle
      • Mille Miglia Red
      • Orange Flame
      • Silver
      • Steel Blue
    • All convertibles came with a choice of Black or White soft tops
    • Interior colors were
      • Black
      • Dark Blue
      • Dark Red
      • Neutral
      • Medium Saddle
      • Silver

I.D. 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 1Z67*5S400001 to 1Z67*5S438465
  • Coupe Serial numbers ranged from 1Z67*5S400001 to 1Z67*5S438465
    PositionCharacterDescription
    11Chevrolet Division
    2ZCorvette
    3 & 467convertible
    37coupe
    5*Engine type where * is replaced by the following
    • J = ZQ3 350-cid V8, 165-hp, 4-barrel
    • T = L82 350-cid V8, 205-hp, 4-barrel
    651975
    7SAssembled in St. Louis, MO
    8 to 13400001 to 438465production sequence
  • Engine serial number
    1 to 70001001sequential production number
    8F or TFlint, MI or Tonawanda, NY
    9 to 11Carburetion & transmission CodeEngineCompressiontransmissionCarburetor
    CUB350-cid 165-hp V-88.5:1manualfour-barrel
    CUD350-cid 205-hp V-89.0:1manualfour-barrel
    CRK350-cid V-8 THM-400 automaticfour-barrel
    CRL350-cid V-8 manualfour-barrel
    CRM350-cid V-8 THM-400 automaticfour-barrel
    CUT350-cid V-8 manualfour-barrel
    CUA350-cid V-8 manualfour-barrel
  • 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 75-1YZ67 identifies a Corvette Stingray convertible
  • The Fisher Body Style Number 75-1YZ37 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 1975 Corvette exterior colors were:
    • 22 = Bright Blue
    • 42 = Bright Green
    • 56 = Bright Yellow
    • 10 = Classic White
    • 74 = Dark Red
    • 67 = Medium Saddle
    • 76 = Mille Miglia Red
    • 70 = Orange Flame
    • 13 = Silver
    • 27 = Steel Blue
  • Upholstery Codes
    ColorVinyl UpholsteryLeather Upholstery
    Black400404
    Silver406407
    Neutral408 
    Dark Blue413 
    Saddle415416
    Dark Red425 

IDENTIFICATION

Series No.Body/Style No.Body TypeFactory PriceShipping WeightProduction Total
Z37
2-dr. Sport Coupe with T-tops - 2 passenger
$6810353233,836
Z67
2-dr. Conv - 2 passenger
$655035324,629

ENGINE

FeatureStandard Engine (RPO ZQ3)Optional Engine (RPO L82)
TypeV-8, Overhead valve
BlockCast iron block
Displacement350 cid350 cid
Bore & Stroke4.00 x 3.48"4.00 x 3.48"
Compression ratio8.5:19.0:1
Brake horsepower165 @ 3800205 @ 4800
Torque255 lb-ft @ 2400255 lb-ft @ 3600
Main bearingfive
Valve liftershydraulic
Camshaft High-performance camshaft
Fuel supplyRochester Quadra-Jet four-barrel Model 4MVRochester Quadra-Jet four-barrel

TRANSMISSION

Standard Manual Transmission
close-ratio 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)

CHASSIS

FeatureConvertibleCoupe
Wheelbase98 inches (2.489 m)98 inches (2.489 m)
Overall length185.5 inches (4.712 m)185.5 inches (4.712 m)
Overall width69.0 inches (1.753 m)69.0 inches (1.753 m)
Overall height 47.4 inches (1.204 m)
Ground Clearance4.5 inches (11.4 cm)4.5 inches (11.4 cm)
Front tread58.7 inches (1.491 m)58.7 inches (1.491 m)
Rear tread59.4 inches (1.509 m)59.4 inches (1.509 m)
TiresF70-15F70-15
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 ratio3.70:1, 3.08:1, 3.36:1, 3.55:1

OPTIONS

RPOCustom interior trim$154
RPO A31Electric power windows$93
RPO A85Custom shoulder belts$41
RPO C07Auxiliary hardtop for convertible$267
RPO C08Vinyl cover for auxiliary hardtop$350
RPO C50Rear window defroster$46
RPO C60Air conditioning$490
RPO FE7G81Gymkhana suspension$7
RPO G81Positraction rear axle, all ratios$12
RPO J50Power brakes$50
RPO L82350-cid 205-hp V-8$336
RPO M21Four-speed close-ratio manual transmissionn/c
RPO M40Turbo Hydra-Matic automatic transmissionn/c
RPO N37Tilt-telescopic steering wheel$82
RPO N40Power steering$129
RPO QRMWhite stripe nylon steel-belted radial tires GR70 x 15$35
RPO QRZGR70 x 15 raised-white-letter steel-belted radial tires$48
RPO U05Dual horns$4
RPO U58AM-FM radio$284
RPO U69AM-FM radio$178
RPO UA1Heavy-duty battery$15
RPO UF1Map light$5
RPO Z07Off-road suspension and brake package$400

HISTORICAL NOTES


  • The 454-cid engine was dropped this year in all Corvettes
  • The convertible was also dropped
  • Car and Driver tested a 1975 and found that it did the quarter-mile in 16.1 seconds and did 0-to-60 in 7.7 seconds with a top speed of 129 mph
  • Robert D. Lund became Chevrolet general manager
  • Zora Arkus-Duntov retired as Chevrolet's chief engineer.
  • David R. McLellan became the chief engineer.

1975 CORVETTE PHOTOS


1975 Corvette

1975 Corvette 1975 Corvette

LITERATURE & LINKS




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