A "Stroker" engine is one which uses an aftermarket, alternate-spec1 or modified crankshaft, connecting rods, and/or pistons to increase the stroke of the motor, which is the linear distance traveled by the pistons.
The spark plug was invented by African-American inventor Edmond Berger on February 2, 1839. It is used to ignite the fuel/air mixture in most internal combustion engines, and so as a device is essential to the world economy as we know it. They are used in most two and four-stroke reciprocating engines, as well as wankel rotary engines.
Ram Air is a [[forced induction]] system for automobiles. There are actually two different things which are known as ram air; Actual ram air systems, which compress air and force it into the [[throttle body]], and thus the [[combustion chamber]]s, and [[positive pressure]] systems, which increase pressure only in the [[airbox]] and improve [[intake]] [[efficiency]]. Ram air has been a feature on some cars since the late sixties, but fell out of favor in the seventies, and has only recently made a comeback.
In order to determine whether the air-fuel ratio (AFR) is rich or lean, the ECU (engine control unit) in a vehicle with electronic fuel delivery control (either carburetor|carbureted with electronic mixture control, or with elecronic fuel injection/EFI) monitors the voltage output of an oxygen sensor (sometimes referred to as an O2 sensor) and adjusts fuel delivery accordingly in order to closely approach a stoichiometric ratio.
The Ford Modular Engine (AKA "Mod V6", "Mod V8", et cetera) engine is the basis of practically every V8-powered vehicle made by Ford Motor Company (FoMoCo) in existence today. It is also the basis of the V10 powerplant inserted into a prototype Mustang and several Ford trucks. The "Modular" name has little to do with the motor, but on the manufacturing methodology; the plants can be retooled to put out different versions of the Modular powerplant in a matter of hours.7