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1970–1972 Chevrolet Chevelle SS 454

The 1970 LS6 454 Chevelle was the peak of factory muscle car power. Rated at 450 hp (actually producing closer to 500), it remains one of the most brutal production cars ever built.

1970–1972 Chevrolet Chevelle SS 454 — Full Specifications

  • Engine: 454ci Big-Block V8 (LS5/LS6)
  • Power: 360–450 bhp
  • Torque: 500–500 lb-ft
  • Transmission: Muncie M22 4-speed manual or Turbo Hydra-Matic 400 automatic
  • Drivetrain: Front engine, rear-wheel drive
  • Body style: 2-door hardtop sport coupe, 2-door convertible (1970 only)
  • Wheelbase: 112 inches
  • Curb weight: 3,800–4,000 lbs
  • 0–60 mph: 5.4 sec (LS6); 6.5 sec (LS5)
  • Quarter mile: 13.1 sec @ 107 mph (LS6, as tested by Car and Driver)
  • Original MSRP: $3,253 (1970 SS 454 base with LS5); $3,540 (with LS6)
  • Current value: $70,000–$120,000 (LS5); $150,000–$250,000+ (LS6)

Production Notes

The LS6 was only available in 1970. Rising insurance rates and emissions requirements killed the high-output big-blocks by 1972. Only 4,475 LS6 cars were built.

Notable Factory Options

  • LS6 454/450hp
  • LS5 454/360hp
  • Cowl induction
  • M22 Rock Crusher 4-speed
  • Heavy-duty cooling
  • F41 suspension

Buying Guide

The 1970 SS 454 is the ultimate GM muscle car for many collectors. The LS5 (360 hp) is the attainable version and still delivers earth-moving torque. The LS6 (450 hp) is the legend—one of the most powerful factory cars ever—and commands stratospheric prices. 1971 SS 454 cars with the LS5 are significantly more affordable and nearly as impressive to drive. 1972 models switched to net horsepower ratings and are the least collectible but best value for drivers. Verify the engine code stamping on the engine pad (LS6 codes: CRV, CGS, CRN; LS5 codes: CGP, CGL, CTY) and cross-reference with the Protect-O-Plate.

Pros

  • Peak factory muscle car power—nothing else matches the LS6
  • Massive torque makes it an unforgettable driving experience
  • Strong GM A-body parts availability
  • LS6 cars are proven blue-chip investments
  • 1971–72 models offer excellent value

Cons

  • LS6 cars are extremely expensive and rare
  • Heavy car—braking and handling require respect
  • Fuel consumption is enormous (6–10 mpg)
  • Many LS5 cars have been fraudulently presented as LS6
  • Big-block cooling can be marginal in summer driving

Restoration Tips

LS6 documentation is critical—many LS5 cars have been 'upgraded.' Check for casting numbers and date codes on all major components. The cowl induction hood is a frequently reproduced part.