1970 Buick Gran Sport 455 Stage 1

This highly-documented 1970 Buick GS Stage 1 has just 38,008 original miles and is powered by its matching numbers 455ci Stage 1 V8. Its 360hp and 510 lb.ft. of torque are pushed to the rear wheels through a Muncie M21 4-speed manual transmission. One of 664 examples produced with a 4-speed transmission, this GS Stage 1 wears Diplomat Blue paint, a black vinyl top and black vinyl interior. Compared to the base 455, the Stage 1 was equipped with larger valves, stiffer springs, and a series of engine modifications that increased horsepower by 10 officially. The true effect of these power modifications was believed to be much greater. Stage 1 badging, chrome valve covers, and air cleaner decal clearly show that this is not a base GS 455.

It includes Sloan Museum documentation, Gran Sport Club of America judging sheets, and documentation of the cars participation in the 2009 New England Concours dElegance.

Third-party inspection report available upon request. This is a clean, well-cared-for original muscle car. The paint is clean and shows little wear that would be expected over time. Similarly, the interior has clean black carpet and black vinyl seats that look new and are a testament to the low mileage. An undercoating has been applied to the underside. A road test and inspection of mechanical functions confirmed that all is in working order and in good condition.

The sale includes a host of documentation, noted below, a removable trailer hitch, and one set of keys.

Features and Specs

38,008 original miles

Original 455ci Stage 1 V8 engine (360hp)

Rochester Quadrajet Carburetor with dual-snorkel air cleaner

Muncie M21 4-speed manual transmission

Cast iron intake manifold, cylinder heads and valve covers

Cast iron exhaust manifold

Heavy duty radiator

Rebuilt Delco Moraine brake booster

Saginaw steering box

Reproduction Delco battery

Original points distributor and Taylor plug wires

Hurst shifter

10-bolt rear axle / positraction rear differential / 3.42 gears

Rallye Ride Control suspension

Power steering

Power front disc / rear drum brakes

15x7-inch chrome 5-spoke Rallye wheels

Air conditioning

FM Radio

H1 trailer hitch option

Service History

Partial service records included in sale

Ownership History

Partial ownership history included in sale

Sloan Museum documentation of authenticity

Certified Gold (389 of 400 points) by the Buick GS Club of America

Purchased by the current owner in Charlotte in 2018

Known issues

Minor scratches to the paint

Included in the sale

Original marketing brochure

Original owners manual

Service receipts

Showboard and show documentation

Reproduction window sticker

Vintage road test article

Sloan Museum documentation

GSCA judging sheets

One set of keys

Removable trailer hitch