Engine pricing can include the following: Capable of up to to 635HP on pump gas! More on Race gas! Turn key and ready to install and run.The engine is FE 345 HP that was rebuilt earlier. 1966 Ford Thunderbird This Thunderbird is a southern car that features a rare, optional Q-code, 428 ci Police Interceptor engine with 345 hp factory engine from Ford.This engine was built in 1968 with heavier connecting rods and nodular iron crankshaft that made a rated horsepower of 335 but actually was 410. The engine was used in 19 Ford Thunderbirds, Mustangs, Galaxies, and Cougars. Ford utilized the biggest stroke of 3.985˝ and a bore of 4.135˝ to make a 428 c.i.d.