Details

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. Purchased by the current owner in Charlotte, this GS Stage 1 is located in Minnesota.

This well-documented example includes Sloan Museum documentation, Gran Sport Club of America judging sheets, and documentation of the car's participation in the 2009 New England Concours d'Elegance. Thorough third-party inspection and photos show 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.

This Buick Gran Sport Stage 1 is being sold through a CLASSIC.COM Pro and is located in Grey Eagle, MN.

About the model

The Buick Gran Sport was introduced for the 1967 model year. The Gran Sport name had been a performance variant of the Buick Skylark, but in 1967, it was spun off into its own model. The Gran Sport, or GS, was a series of coupes and convertibles fitted with performance-tuned V8 engines. The GS featured notable variants such as the GS Stage 1, Stage 2, GSX, and GSX Stage 1. The Buick Gran Sport was in production until 1972. A Gran Sport variant of the Buick Century was produced from 1973 to 1975.

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

Known Modifications

• none

Service History

• Partial service records included in the sale

Ownership History

• Partial ownership history included in the 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

Due Diligence

• Third-party photos 8/7/2023
• Third-party inspection 7/24/2023

Included in the sale

• Original marketing brochure
• Original owner's 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