For Sale: 1964 Buick Lesabre- All original! Only 31,000 miles, optional 355 wildcat, high compression engine. First year turbo 400 transmission. Rust free, like new condition, in & out. Beautiful original low mileage car. $14,500. Please Call, Middletown, Connecticut: (860) 347-9577 - landline, NO text messages.
Sounds like a nice car. More info will help your sale. Pictures? Color combo? Two or four door? Convertible?
860 area code is CT. Also ST400 was never behind the 300. It would have a ST300. Starting in 66, the ST4oo was available in the LeSabre 400 (for 400 trans) behind the 340 engine.
It was a factory option, 355 wildcat engine which is a high compression 4 barrel engine-300 cubic inch. The transmission is a turbine/turbo 400 which was only listed as an option for the 355 wildcat engine. If you have any questions, feel free to call.
https://ultimatecarpage.com/forum/showthread.php?46471-Buick-LeSabre-(2nd-Gen)-1961-1964 Please read the last paragraph .