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1970 was the pinnacle year for American Muscle Cars. The Buick GS 455 Stage One was crowned by Motor Trend as 'the quickest American Production Car we have ever tested.' The Stage One performance package added a hotter cam, larger valves, stronger valve springs, and revised carburetor jetting. 2,865 Grand Sport/Stage One's were manufactured at a unit cost of $3,578. The Gran Sport package added a mere $199 to the vehicle cost.
Advertising slogan: 'Introducing Cars to Light Your Fire'
The Buick V8 engine produced 350 horsepower. In the optional Stage 1 trim it produced an underrated 360 horsepower and a stump pulling 510 foot-pounds at a low 2800 RPMs. Under-reported, the real horsepower number was more accurately 415 horsepower to 425 horsepower due to the larger valves and stronger cam.
Advertising slogan: 'Introducing Cars to Light Your Fire'
The Buick V8 engine produced 350 horsepower. In the optional Stage 1 trim it produced an underrated 360 horsepower and a stump pulling 510 foot-pounds at a low 2800 RPMs. Under-reported, the real horsepower number was more accurately 415 horsepower to 425 horsepower due to the larger valves and stronger cam.
No auction information available for this vehicle at this time.
1970 Buick Gran Sport Auction Sales
Recent Sales of the Buick Gran Sport
(Data based on Model Year 1970 sales)
| 1970 BUICK GS 455 STAGE 1 CONVERTIBLE Chassis#: 446670H341643 Sold for USD$115,500 2024 Barrett-Jackson : Scottsdale AZ | |
| 1970 Buick GS Stage 1 Convertible Chassis#: 446670h150511 Sold for USD$313,500 2024 Mecum : Kissimmee | |
| 1970 Buick GS Convertible Chassis#: 446670h178147 Sold for USD$51,700 2024 Mecum : Kissimmee | |
| 1970 Buick GS Convertible Chassis#: 446670k104197 Sold for USD$44,000 2023 Mecum : Dallas | |
| 1970 Buick GS Stage 1 Sport Coupe Sold for USD$54,880 2023 Worldwide Auctioneers : The Auburn Auction | |
| 1970 Buick GS Convertible Chassis#: 446670k101978 Sold for USD$27,500 2023 Mecum : Indy | |
| 1970 Buick GS Convertible Chassis#: 446670k104197 Sold for USD$44,000 2023 Mecum : Indy | |
| 1970 Buick GS Stage 1 Chassis#: 446370h191302 Sold for USD$49,500 2023 Mecum : Indy | |
| 1970 Buick GS Stage 1 Convertible Chassis#: 446670h307962 Sold for USD$95,700 2023 Mecum : Indy | |
| 1970 Buick GS Convertible Chassis#: 446670h340856 Sold for USD$60,500 2023 Mecum : Indy | |
| 1970 BUICK GS 455 STAGE 1 Chassis#: 446370H133646 Sold for USD$128,700 2023 Barrett-Jackson : Scottsdale, Az. | |
| 1970 Buick GS Convertible Sold for USD$60,500 2023 Mecum : Kissimmee | |
| 1970 Buick GS Stage 1 Sold for USD$55,000 2023 Mecum : Kissimmee | |
| 1970 Buick GS Stage 1 Sold for USD$209,000 2023 Mecum : Kissimmee | |
| 1970 Buick GS Stage 1 Convertible Sold for USD$162,250 2023 Mecum : Kissimmee | |
| 1970 Buick GS Sold for USD$39,600 2022 Mecum : Kansas City | |
| 1970 Buick GS Sold for USD$36,300 2022 Mecum : Las Vegas | |
| 1970 BUICK GS 455 STAGE 1 CONVERTIBLE Chassis#: 446670H141108 Sold for USD$96,800 2022 Barrett-Jackson : Houston | |
| 1970 BUICK GS 455 STAGE 1 PROTOTYPE Chassis#: 446370H121924 Sold for USD$99,000 2022 Barrett-Jackson : Houston | |
| 1970 Buick GS Sold for USD$86,900 2022 Mecum : Dallas |
Buick Gran Sports That Failed To Sell At Auction
1970 Buick Gran Sport's that have appeared at auction but did not sell.
| Vehicle | Chassis | Event | High Bid | Est. Low | Est. High |
|---|---|---|---|---|---|
| 1970 Buick GS Stage 1 | 446370h258812 | 2023 Mecum : Indy | $85,000 | $150,000 | $200,000 |
| 1970 Buick GS | 2023 Mecum : Kissimmee | $42,000 | |||
| 1970 Buick GS | 446370H315247 | 2022 Worldwide Auctioneers : The Auburn Auction | |||
| 1970 Buick GS Stage 1 | 2022 Mecum : Orlando | $45,000 | |||
| 1970 Buick GS | 2022 Mecum Indy | $57,000 | |||
| 1970 Buick GS | 2021 Mecum : Las Vegas | $45,000 | |||
| 1970 Buick GS Stage 1 | 2021 Mecum : Dallas | $30,000 | |||
| 1970 Buick GS Stage 1 | 2021 Mecum : Dallas | $30,000 | |||
| 1970 Buick GS | 2020 Mecum : Las Vegas | $56,000 | |||
| 1970 Buick GS Stage 1 Convertible | 2020 Mecum : Kissimmee Summer Special | $72,000 | |||
| 1970 Buick GS Stage 1 Convertible | 2020 Mecum : Indy | $70,000 | $75,000 | $85,000 | |
| 1970 Buick GS Stage 1 | 2020 Mecum Auctions : Kissimmee | $74,000 | $120,000 | $150,000 | |
| 1970 Buick GS Stage II | 2019 Mecum : Chicago | $60,000 | |||
| 1970 Buick GS Stage 1 Prototype Show Car | 2019 Mecum : Dallas | $95,000 | |||
| 1970 Buick GS Stage 1 Convertible | 2019 Mecum : Dallas | $80,000 | |||
| 1970 Buick GS Stage 1 | 2019 Mecum : Dallas | $80,000 | |||
| 1970 Buick GS Stage 1 Convertible | 2019 Mecum : Indianpolis | $140,000 | $140,000 | $165,000 | |
| 1970 Buick GS Stage 1 Convertible | 2019 Mecum : Indianpolis | $72,000 | |||
| 1970 Buick GS Stage II | 2019 Mecum : Indianpolis | $70,000 | $50,000 | $75,000 | |
| 1970 Buick GS 350 | 2019 Spring Carlisle Auction | ||||
| 1970 Buick GS Stage 1 | 2019 Mecum : Phoenix Auction | $47,500 | |||
| 1970 Buick GS Stage 1 Convertible | 2019 Mecum : Phoenix Auction | $70,000 | |||
| 1970 Buick GS Stage 1 Convertible | 2019 Mecum : Kissimmee | $70,000 | $80,000 | $100,000 | |
| 1970 Buick GS Stage II | 2019 Mecum : Kissimmee | $60,000 | |||
| 1970 Buick GS | 2018 Mecum : Kansas City | $37,000 | |||
| 1970 Buick GS Stage II | 2018 Mecum : Las Vegas | $65,000 | |||
| 1970 Buick GS Stage 1 | 2018 Mecum : 2018 Chicago | $52,000 | |||
| 1970 Buick GS 350 | 2018 Carlisle Auction : Fall Carlisle | ||||
| 1970 Buick GS Convertible | 446670Z116191 | 2018 RM Auctions : Auburn Fall | |||
| 1970 Buick GS Stage 1 Convertible | 446670H112938 | 2018 Mecum : Monterey | $62,000 | $75,000 | $100,000 |
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| 1967 CHEVROLET CAMARO CUSTOM CONVERTIBLE Chassis#:124677L156439 Sold for $52,800 2024 Barrett-Jackson : Scottsdale AZ | |
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1970 Buick Gran Sport
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