The Gran Sport package included Buick’s 325-bhp 401-cid V-8.”Wildcat 445″ on the air cleaner referred to its torque output. Undeterred, Buick simply renamed it the “400.” Teamed with a heavy-responsibility radiator and twin-exhausts, the 401 carried the same 325-bhp rating as in Buick’s full-dimension fashions. They experience the same change in momentum. At the top […]