Chevrolet Tri-Five buyer's guide

Overview

"Tri-Five" is the hobby's name for the 1955, 1956 and 1957 Chevrolets — the cars that made Chevrolet the style and performance leader of the 1950s and introduced the small-block V8 to the world. Three trim levels: the 150 (basic), the 210 (mid) and the Bel Air (top), in sedans, coupes, hardtops, convertibles, wagons and the remarkable Nomad two-door sports wagon. The 1957 is the icon — the fins, the grille, the dashboard — but the 1955 is the purist's first-year car and the 1956 the connoisseur's middle path. Few classics are better supported or easier to live with; the market divides sharply between original cars, restorations and the vast number of modified street machines.

Generations and year breaks

1955 — the first

• All-new: new body, new chassis and the new 265 small-block V8 — the engine that defined Chevrolet performance for a generation.
• Clean, finless Eggcrate-grille styling; the Nomad debuted as a concept-car-for-the-road at Bel Air prices.
• Six-cylinder cars (the Blue Flame) are charming and much cheaper; the market is a V8 market.

1956 — the refinement

• Full-width grille, more chrome, revised trim — to many eyes the best balanced of the three years.
• The 265 gained a four-barrel and dual-exhaust options up to the Corvette-spec dual-quad in the passenger cars (rare).
• The four-door hardtop (Sport Sedan) joined the line.

1957 — the icon

• The finned, chromed finale: new dash, offset grille, fuel injection ("Fuelie" 283, one horsepower per cubic inch) and Turboglide on the option list.
• Fuel-injected cars and convertibles are the blue chips; a genuine Fuelie demands its correct injection unit and documentation.
• The Black Widow stock-car programme and the sedan-delivery/150 utility cars occupy the lore end of the range.

Engines and options that matter

• 265 and 283 small-blocks — the correct engines; a 350 swap is common and fine in a driver, a deduction in an original car.
• Dual-quad 283 (1956–57) and fuel injection (1957) — the factory performance options; verify components date-match, because complete correct set-ups are valuable objects in themselves.
• Transmissions: three-speed manual, overdrive manual, Powerglide — and for drivers, the overdrive is the sweet choice. Turboglide (1957) is a specialist taste.
• Power steering, power brakes, air conditioning (rare, dealer or factory) and the padded dash move prices modestly; the Nomad and convertible body styles move them greatly.
• Two-tone paint and Bel Air trim are specification, not options — buy the car whose trim tag matches its colours.

What to check before buying

• Rust: front floor pans and the braces beneath them, the trunk floor, inner and outer rockers, the lower front fenders behind the wheels, and the headlight eyebrows on 1957s. Body mounts collapse and doors drop — check shut lines first.
• The trim tag and VIN: the VIN (driver's door jamb or A-pillar) decodes engine (V8 cars carry a V prefix) and assembly plant; the cowl trim tag gives original paint and trim. Mismatches are the norm on modified cars and must be priced, not argued.
• Modified cars: Tri-Fives were the default hot rod for fifty years: disc brakes, crate engines, air ride, mini-tubs. Workmanship varies from superb to dangerous — inspect wiring, brake plumbing and front-end swaps (many use later clips) with suspicion.
• Nomad specifics: the liftgate and its chrome spears, the ribbed roof and the tailgate are Nomad-only; pot-metal trim pitting is the expensive cosmetic.
• Fuelie verification: the injection unit's serial and date codes, the specific distributor and the car's documentation decide whether it is a real Ramjet car or a dressed 283.
• Parts: among the best in the hobby — sheet metal, glass, trim and mechanicals are reproduced comprehensively. A Tri-Five is never unrestorable for want of parts.