A 340 cubic inch version, the Gran Sport 340, was added for 1967. It produced 260 hp (193 kW) and 365 ft.lbf (495 Nm), and less than 4,000 were sold. It was replaced the next year with the Gran Sport 350, and similar Gran Sport California, which used Buick's 350 cubic inch small-block engine. Sales of the little-brother Gran Sport doubled, and were up to almost 10,000 for 1970. The Gran Sport 350 outlived its big brothers, lasting until Gran Sport production stopped in 1975.
A baby brother Gran Sport 231 was produced in 1975.
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History
About the Buick Gran Sport 340/350
A 340 cubic inch version, the Gran Sport 340, was added for 1967. It produced 260 hp (193 kW) and 365 ft.lbf (495 Nm), and less than 4,000 were sold. It was replaced the next year with the Gran Sport 350, and similar Gran Sport California, which used Buick's 350 cubic inch small-block engine. Sales of the little-brother Gran Sport doubled, and were up to almost 10,000 for 1970. The Gran Sport 350 outlived its big brothers, lasting until Gran Sport production stopped in 1975.
A baby brother Gran Sport 231 was produced in 1975.