• 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

  Position	Character	Description
  1	1	Chevrolet Division
  2	Z	Corvette
  3 & 4	67	convertible
  	37	coupe
  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
  6	5	1975
  7	S	Assembled in St. Louis, MO
  8 to 13	400001 to 438465	production sequence

• Engine serial number

  1 to 7	0001001	sequential production number
  8	F or T	Flint, MI or Tonawanda, NY
  9 to 11	Carburetion & transmission	Code	Engine	Compression	transmission	Carburetor
  		CUB	350-cid 165-hp V-8	8.5:1	manual	four-barrel
  		CUD	350-cid 205-hp V-8	9.0:1	manual	four-barrel
  		CRK	350-cid V-8		THM-400 automatic	four-barrel
  		CRL	350-cid V-8		manual	four-barrel
  		CRM	350-cid V-8		THM-400 automatic	four-barrel
  		CUT	350-cid V-8		manual	four-barrel
  		CUA	350-cid V-8		manual	four-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

  Color	Vinyl Upholstery	Leather Upholstery
  Black	400	404
  Silver	406	407
  Neutral	408
  Dark Blue	413
  Saddle	415	416
  Dark Red	425

Series No.	Body/Style No.	Body Type	Factory Price	Shipping Weight	Production Total
Z	37	2-dr. Sport Coupe with T-tops - 2 passenger	$6810	3532	33,836
Z	67	2-dr. Conv - 2 passenger	$6550	3532	4,629

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

Feature	Convertible	Coupe
Wheelbase	98 inches (2.489 m)	98 inches (2.489 m)
Overall length	185.5 inches (4.712 m)	185.5 inches (4.712 m)
Overall width	69.0 inches (1.753 m)	69.0 inches (1.753 m)
Overall height		47.4 inches (1.204 m)
Ground Clearance	4.5 inches (11.4 cm)	4.5 inches (11.4 cm)
Front tread	58.7 inches (1.491 m)	58.7 inches (1.491 m)
Rear tread	59.4 inches (1.509 m)	59.4 inches (1.509 m)
Tires	F70-15	F70-15
Frame	Full-length welded-steel ladder type with five cross members. Steel box sections, welded.
Front suspension	Independent, unequal-length A-arms, coil springs; tubular shocks and stabilizer bar
Rear suspension	Independent, trailing arms, toe links, transverse chromium-carbon steel leaf spring, tube shocks, and anti-roll bar
Steering	Saginaw recirulating ball, 17.6:1 ratio, 2.9 turns to lock, 39.0 turning circle
Rear axle type	Sprung differential, Hypoid gear
Brakes	Hydraulic, vented four wheel discs; 11.75-inch diameter, single calipers, optional power assist
Swept area	11.75" front and back
Total swept area	461 sq. in.
Wheels	8" wide slotted steel 15" 5-lug disc
Standard rear axle ratio	3.36:1
Optional rear axle ratio	3.70:1, 3.08:1, 3.36:1, 3.55:1

OPTIONS

RPO Custom interior trim ($154) RPO A31 Electric power windows ($93) RPO A85 Custom shoulder belts ($41) RPO C07 Auxiliary hardtop for convertible ($267) RPO C08 Vinyl cover for auxiliary hardtop ($350) RPO C50 Rear window defroster ($46) RPO C60 Air conditioning ($490) RPO FE7G81 Gymkhana suspension ($7) RPO G81 Positraction rear axle, all ratios ($12) RPO J50 Power brakes ($50) RPO L82 350-cid 205-hp V-8 ($336) RPO M21 Four-speed close-ratio manual transmission (n/c) RPO M40 Turbo Hydra-Matic automatic transmission (n/c) RPO N37 Tilt-telescopic steering wheel ($82) RPO N40 Power steering ($129) RPO QRM White stripe nylon steel-belted radial tires GR70 x 15 ($35) RPO QRZ GR70 x 15 raised-white-letter steel-belted radial tires ($48) RPO U05 Dual horns ($4) RPO U58 AM-FM radio ($284) RPO U69 AM-FM radio ($178) RPO UA1 Heavy-duty battery ($15) RPO UF1 Map light ($5) RPO Z07 Off-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

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