1957 Ford Thunderbird - 312 V8 - Tremec 5-Speed Offered for sale is this beautiful 1957 Ford Thunderbird finished in classic Colonial White. Coming from a Ford collection, this Thunderbird is an older restoration that has been very well cared for and remains in fantastic overall condition. Power comes from the legendary 312 cubic-inch V8, but what really sets this Thunderbird apart is its 5-speed manual transmission conversion. The original heavy automatic transmission was removed and replaced with a modern Tremec 5-speed, along with a new rear differential featuring 4.11 gearing.