1970 Buick Grand Sport GS 455 Stage 1

The 1970 BUICK GS 455 Stage 1 was one of 2,465 Stage 1 hardtops produced in 1970. It underwent a meticulous body off-frame rotisserie restoration in 2019. This particular model features a built date code 455 cubic-inch Riviera engine, although it is non-matching in numbers. The correct 3-speed automatic transmission complements the powerful engine.

Notably, this car is listed in the GS Registry and appears to still retain its original metal.

During the restoration process, great care was taken to ensure the body was laser-straight and all body gaps fit precisely. The paintwork, now 5 years old, remains pristine with a glass-like clear coat finish. No cracks, bubbles, or shrinkage were found, showcasing the quality of the paint job. Additionally, the chrome brightwork was meticulously restored, stainless elements were straightened and polished, and all glass, including a new front windshield, remains crystal clear.

The interior of the vehicle received equal attention during the restoration. The entire interior was gutted, Dynamatted under the carpet for soundproofing, and meticulously restored. The dash was disassembled and refurbished, gauges were restored, and modern amenities like a radio with Kicker speakers were added. The upholstery, headliner, visors, carpet, and other interior components were replaced and function flawlessly.

Underneath the car, the chassis underwent a thorough restoration process. The suspension, steering components, brake system, fuel system, and exhaust system were all either rebuilt or replaced to ensure optimal performance. The engine bay and transmission are spotless, reflecting the overall attention to detail in the restoration process.

The Stage 1 package included performance enhancements such as larger valves with heavier springs, a re-jetted carburetor, a high lift cam, upgraded oiling system, high volume fuel pump, HD cooling, and a posi differential. Cars equipped with air conditioning came with 3.42 gears. With only 1680 miles driven since the restoration, this restored GS 455 Stage 1 stands out as a showpiece that would enhance any discerning collector’s collection or impress enthusiasts looking to experience its full potential on the road.