1966 Chevy Chevelle Specs and Overview
Last Updated October 31, 2025The 1966 Chevelle represented a major turning point for Chevrolet's midsize lineup. It introduced a full body redesign, a more sculpted and aggressive look, and turned the Super Sport (SS) into a true standalone model with legitimate muscle car credentials. This was the year the Chevelle became a serious street contender.
1966 Chevy Chevelle Specs and Technical Overview
| Spec | Details |
|---|---|
| Model Year | 1966 |
| Body Styles | 2-door coupe, convertible, sedan, wagon |
| Trim Levels | 300, 300 Deluxe, Malibu, Malibu SS 396 |
| Engine Options |
230ci I6 (140 hp) 283ci V8 (195-220 hp) 327ci V8 (275 hp) 396ci V8 (325, 360, 375 hp) |
| Transmissions | 3-speed manual, 4-speed manual, Powerglide or Turbo Hydra-Matic automatic |
| Wheelbase | 115 inches |
Brand New Design and SS Performance
Muscular Body Styling
The 1966 redesign brought sweeping body lines, flared rear quarters, and a fastback roofline to the Chevelle. The new SS 396 had its own grille, badging, and hood with simulated scoops. Wheel well openings became more aggressive, giving the car a planted, muscular appearance.
Real Muscle: SS 396 Packages
For the first time, the SS 396 became its own model rather than a trim option. Buyers could choose from three versions of the 396ci big block V8, with the top L78 version producing 375 horsepower. With available 4-speed manual, heavy-duty suspension, and a Positraction differential, the Chevelle SS 396 could run with the best muscle cars of the era.
Legacy and Enthusiast Appeal
The 1966 Chevelle SS 396 is a crown jewel in the muscle car world. It's instantly recognizable, brutally fast, and easily restorable thanks to a deep aftermarket. Whether you're after a show-winning classic or a street-ready restomod, this model year checks every box for fans of raw, factory V8 muscle.
