Glossary of Terms
M
A performance version of the Mustang that came standard with the 351ci small-block but was commonly upgraded by the buyer with engines such as the 428 Cobra Jet with Ram Air. The Mach 1 stayed in production from ’61-’74 and then reappeared again in ’75 on a Mustang II. The Mach 1 has since been revived once more on an ’03 model of the Mustang.
Magneto --A part within the ignition system that generates electrical power for ignition combustion through a system of magnets and coils that move in relative motion.
Magnum 500 Wheels --Were a stamped-steel wheels made by Motor Wheel Corporation. These wheels although built by Ford were used by all of the Detroit automakers during the time musclecars were built. The wheels had a five spoke stamping in the face with the area between the spokes painted black. Each auto maker also used their own center caps and trim rings.
Main Bearing Cap --A reciprocating engine component which, when attached to the engine block provides lateral location for the crankshaft and possesses a provision for half of one main crankshaft bearing.
Manifold --A device that connects differing numbers of ducts for the purpose of transferring gases into or out of an engine.
Mark Donohue Special --A 1970 limited production Javelin built to celebrate Mark Donohue joining the AMC organization to drive for them in the SCCA Trans-Am series.
Master Cylinder --A hydraulic component of the braking system that utilizes mechanical force to produce positive pressure in the hydraulic lines.
Master Switch --A safety switch capable of disabling all operating electrical functions without interfering with the power supply of any on-board fire system.
Max Wedge --Considered the predecessor to Chrysler’s Hemi, the 426ci Max Wedge used wedge-shaped combustible chambers, a dual-quad cross-ram intake, and was very successful in Super Stock racing during the early 1960’s.
McPherson Strut --(See strut type suspension) A form of frontal suspension that utilizes a strut with an integral tubular shock absorber and coil spring. The steering swivel axis is also noted as that of the strut/shock. Upper location is by strut only.
Metallic --Possessing an iridescent or specular (mirror-like) reflective quality. One such example would be aluminum foil.
Metering Rod --An internal carburetor part which assists with the metering of flow of the fuel within the carburetor.
Metering Rod --A component of the carburetor capable of metering fuel flow.
Mirror (Rear Window) --A mirror that serves the purpose of broadening the driver’s field of vision in the rearward direction.
Monocoque --A form of frameless construction in which the primary structure of the car consists of permanently assembled panels with the running gear, suspension and body attached.
Motor Mount --Usually a metal and rubber sandwiched part that is used to connect the engine to the frame. In high performance applications these mounts are also made as a solid metal part.
Mouse Motor --An affectionate, yet unofficial term for Chevrolet’s small-block V-8 in regards to its small size.
Muffler --A part responsible for reducing the sound level from the exhaust system.
Muncie --A series of GM-built transmissions with their name taken from the Muncie, Indiana plant where they were constructed. Of the Muncie series, the most common were the M20, M21, and M22 Rockcrusher four-speeds.
