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2+2
A term used to describe a Mustang that has 2 seats in the front of the vehicle, as well as room for 2 passengers in the rear of the vehicle.
3rd Member
See “Third Member”.
Aftermarket
Products made by various companies designed to fit popular automobiles that were added as upgrade accessories. The products are not factory add-on options. They were designed and made after the vehicle was made. For example, a Mustang might have aftermarket Craiger or Torque Thrust wheels instead of Magnum 500’s or stock steel wheels.
Air Compressor
A motorized air pressure generating machine. This machine is used to hold compressed air at high pressure to power a variety of air pneumatic tools. It is particularly helpful in the Mustang restoration industry, when utilized with mechanical and autobody tools.
Anti-Sway Bar
A forged rod that connects to the front frame and also to the lower control arms. This suspension component helps to limit vehicle leaning through hard, fast turns.
Authentic Appearance
Restoring a vehicle using original parts. No reproduction parts are used. This helps the vehicle retain its original look and value.
Autobody
The industry of automotive body repair and refinishing.
Autobody Panel
Term used to describe fenders, doors, hoods, roofskin, quarter and taillight panels, etc.
Automatic Transmission
Also referred to as AT, A/T or Auto Trans. This style of transmission is hydraulic and uses oil under pressure to shift from one gear speed or direction to the next.
Axle
The steel rod that transfers power from the differential gears to the rear wheel.
Body Filler
A polyester or fiberglass based material designed to fill minor dents and imperfections on automobiles during the refinishing process.
Body Sealer
A caulking compound designed for use in sealing autobody panel seams or joints.
Bone Stock
A slang term to describe a vehicle that doesn’t have any fancy options. The vehicle is the base model without any factory options or upgrades.
Bullitt
The name given to the 1968 Fastback driven by Steve McQueen in the popular 1968 thriller movie, "Bullitt".
Cast Metal
Usually cast iron or cast aluminum. This is the process where metal is melted and poured into forms or molds to form parts or castings.
Center Section
A common term used to describe the removable gear assembly (third member) in an automobile rear end housing.
Chemical Dipped
The process of submerging a complete vehicle into a tank of acid. This process removes all paint, body filler, body sealer and rust.
Classic Mustang
The best Mustangs on the planet! First generation Mustangs manufactured during 1964 and 1973.
Control Arms
Components of the front suspension that come in two forms: upper control arms (A-arm) and lower control arm. The upper control arm supports the shock absorber and coil spring. The lower control arm supports the front wheel spindle.
Convertible
A sporty vehicle with a removable or retractable roof.
Core
A rebuildable automotive component.
Coupe
A sporty 2-door vehicle without door posts between the door and quarter windows (when the windows of the doors and quarter windows are rolled down, there is not a division bar).
Crossmember
A brace or bracket that is used to support a transmission or to reinforce a frame.
Daily Driver
A vehicle that is driven daily. The condition of the vehicle is fair and shows some wear.
Differential
Also known as the rear end or rear axle. The differential is a geared portion of the rear end that transfers power from the transmission and driveshaft to the rear wheels.
Dipped
Slang for "chemical dipped". See "Chemical Dipped".
Dog Leg
Also referred to as Dog Legging. This describes a vehicle in motion that when viewed from the front or rear, travels at an angle un-parallel to the road lines. This is generally caused by poor front end alignment or a bent frame.
Driveshaft
Also referred to as Driveline. A long tubular shaft that connects the transmission to the rear end. This shaft conveys power from the transmission to the rear wheels via the differential.
Early Mustang
A term used to describe 1964 - 1966 Mustangs.
Eleanor
A Shelby clone Mustang which utilizes the 1967 or 1968 Fastback body style. This name was given to the original Shelby clone, used in the movie "Gone in 60 seconds", starring Nicholas Cage.
Fastback
A sporty vehicle with a distinctive sloping rear window and roofline.
Forged Metal
Also referred to as forged steel or forged aluminum. The process where metal is heated then formed into specific shapes. The metal is not melted and poured, like that of cast metal.
Frame
A heavy duty steel framework that holds a vehicle body. It is sometimes referred to as a "full frame", which usually means that the body is removable. This differs from a uni-body, where the frame and body are one assembly.
Front End Alignment
A series of precise weights and measures used to adjust the front end suspension. This process ensures that the vehicle has a consistent tire wear and a smooth ride.
Front End Suspension
An assembly of parts bolted to the front frame or sub frame. These parts hold the wheels and steering components.
Gauge Cluster
See "Instrument Panel".
Grande
A 1969-1973 Mustang Coupe with deluxe options that were standard when the car was purchased.
Hacked
Slang term for a sloppy modification. Generally, it refers to cutting a car body to change its appearance or functionability. For example, if an improper, careless job was done when cutting a fender to allow for a larger wheel clearance, it would be termed a “hack job”. If done nicely, this job would be termed “modified”.
Hi-Po
Also known as Hi Po or High Performance. This is an engine that performs with high horse power and torque readings.
High End
Vehicle with high value.
Horse Power
A measurement of power output of an engine.
Housing
A part body that contains the internal components of a complete assembly. For example, a rear end differential has axles and gears. They are all bolted into a housing.
Hulk
A semi-complete or complete vehicle that is destined for the salvage yard.
Hydraulic
The use of a pump, hoses and valves with pressurized fluid. This system is under high pressure when a lever or a steering wheel is moved. This motion opens a valve which releases pressurized fluid. The fluid generally moves a hydraulic cylinder, which pushes or pulls when pressurized.
Instrument Panel
Also known as "gauge cluster". A housing that contains the gauges needed to operate the vehicle. These gauges could include the speedometer, tachometer, odometer, temperature, oil pressure, fuel level, amperage, seat belt warning light, brake warning light and vacuum sensor.
Intake Manifold
The component of the engine that takes the fuel in and distributes it to each engine cylinder.
Jack
A hydraulic or mechanical device used to lift a vehicle to perform maintenance on that vehicle. Jacks are commonly used to change a tire.
Jumper Cables
The cables used to help start a vehicle with a low or dead battery.
K Code
The engine code designating a Mustang with a high performance (hi-po) 289 engine. The K-code was also the base engine used in all 1965 - 1966 Shelby Mustangs.
KR 500
The symbol used on 1968 Shelby Mustangs with a 428 big block engine. "KR" stands for "King of the Road".
Light Bucket
The term used to describe the die cast pot metal headlight fender extension assembly. This part bolts on to the end of the fender and holds the headlight and related parts.
Lubricate
Also Lube, Lubrication. To apply an anti-friction substance to limit wear. Some common lubricants are motor oil, transmission fluid, gear oil, bearing grease, graphite or petroleum based grease.
Mach 1
A 1969-1973 Mustang Fastback (sportroof) that had specialized trim and option packages.
Manual Steering
Steering system components that are manual in motion and not powered or hydraulically assisted.
Manual Transmission
Also referred to as MT, M/T or Manual Trans. Slang term is "stick shift". This style of transmission contains oil for lubrication, but is not under pressure. A manual transmission is operated by the driver and is more labor intensive because it is not automatic.
Media Blasted
Fragmented plastic material used in place of sand when sandblasting.
Modified
A vehicle that has been changed from factory original to something custom or unique.
Mount
A rubber or nylon insulator bushing that is used to cushion an engine or transmission. A mount is designed to minimize vibration and maintain smooth operation.
Muscle Car
A name earned by a class of sporty automobiles manufactured between the late 1950's to the early 1970's.
N-Case
The term used to describe a rear end third member that is made of high nodular cast iron. This third member has a large capital "N" casted into it. These rear ends were first made in 1967, in response to problematic rear end issues with WAR casting number third members.
Nodular
High strength cast iron.
NOS
N.O.S., New Old Stock. Or, also called New Obsolete Stock. An original part that has never been used and is still in the original container or box, or has the original tags or labels.
Obsolete
Rare and hard-to-find. No longer manufactured.
OEM
O.E.M., Original Equipment Manufacture. A part made for a vehicle by the original company that manufactured the car. For example, OEM Mustang fenders would be referring to fender that the Ford company manufactured.
Oil
A lubricating liquid that comes in the form of a fossil fuel petroleum derivative or a synthetic man-made lubricating substance. Oil is designed to keep all engine components lubricated to limit wear and to aid in the internal cooling process.
Options
Also referred to as upgrades. Additional parts and accessories that were ordered with the vehicle at the time of purchase at an added cost. Options came in the form of factory options or dealer installed options. Factory options were added to the vehicle on the assembly line and dealer options were added to the vehicle at the request of the perspective buyer and were installed at the dealership.
Original
A vehicle that is unchanged, unmodified, or unrestored. It is in factory, assembly line condition.
Power Steering
A steering system that is powered by a hydraulic oil pump and is hydraulically assisted. Fluid is pumped into a hydraulic cylinder, which helps the driver move the steering linkage via the steering wheel.
Preserved
When a vehicle or parts of a vehicle are well kept and taken care of. They are not changed, rather they are kept 'as-is'.
Pro Street
A race car that is also street legal. It is appropriately licensed to be driven on public roadways.
Q Code
The engine code used from 1968-1970 that designates a 428 4V Cobra Jet engine.
Quarter Mile
A term used when referring to how fast a car can accelerate to the top speed within the distance of one quarter of a mile.
Re-Core
The process of applying new cooling fins to obsolete, original radiator tanks. The core is re-soldered to the original upper and lower tank. This process helps retain the vehicle's appearance.
Re-Done
Another term for "Rebuilt" or "Restored".
Rear Axle
The splined shaft that protrudes from the geared differential and holds one of the rear wheels. It is located inside the rear end housing.
Rear End
An assembly consisting of a geared differential and two axles, which are contained within a rear end housing.
Rear End Housing
The steel container that holds the gears and axles within a rear end assembly.
Rebuilt
The process of tearing something down or taking it apart, followed by cleaning or replacing worn or damaged components.
Refinishing
The process of doing autobody repairs and applying a fresh coat of new paint to a vehicle.
Repo
An abbreviation for word, "reproduction".
Repop
A slang term and shortened abbreviation for the word, "reproduction".
Reproduction
A replacement part that has been manufactured for Classic vehicles. These parts are generally made by companies other than the original motor vehicle factories. Often times, reproduction parts do not fit properly and offer a different appearance from that of an original part.
Restomod
A vehicle that has been restored, but is slightly modified from the factory original condition. Usually, the vehicle has bolt-on accessories.
Restoration
The process of restoring a vehicle to its original condition.
Restore
Bring to original condition.
Roll Cage
A system of tubes fabricated inside the shell of a car body. This assembly protects a driver in case of a vehicle roll-over. The roll cage prevents the roof of the vehicle from caving in and injuring the driver and/or passenger.
Rotisserie
A metal frame, usually on wheels or casters, designed to hold a car body in any inverted position for ease of assembly during restoration.
Rotisserie Restoration
A vehicle that has been restored on a rotisserie. Cars that have been restored in this manner generally have an undercarriage as nice as the interior and exterior of the car.
Rust Bucket
A slang term used to describe a vehicle with an extensive amount of cosmetic and structural rust.
Salvage Yard
Often referred to as wrecking yard, junk yard or bone yard. This is a place where damaged, wrecked, and unwanted vehicles are stored until they are crushed and recycled.
Sandblasted
A process commonly used to remove paint, rust and oxidation from an object. Common materials used in sandblasting are garnet sand, silica sand, plastic media, soda, fragmented nut shells and glass. A sand blasting machine and air compressor is used to propel the material at high air pressure onto the object.
Seam Sealer
A caulking compound designed for use in sealing autobody panel seams or joints.
Sheet Metal
Another word for an autobody panel. Sometimes slang for fenders, doors, hoods, etc.
Shelby
The first "Shelby" was constructed from a 1965 Mustang Fastback. The name Shelby came from its creator, Carroll Shelby. These cars were shipped to various locations, where they were modified to Carroll Shelby's specifications. Later versions of Shelby Mustangs utilized those of Fastbacks and Convertibles. Shelby vehicles are generally Fastbacks with a lot of distinct options.
Shell
A body or uni-body that has been disassembled and does not have any parts on it.
Shock Absorbers
Also referred to as shocks. These are gas or air charged cylinders that limit suspension travel and compensate for uneven road conditions. Shock absorbers smooth a vehicle's ride and prevent it from bouncing over rough conditions. Shocks minimize suspension spring bounce.
Shock Towers
The area of a uni-body that contains the front coil spring, shock absorber and upper control arm.
Shot Peened
Material resembling small marbles or steel balls (BB's) used in place of sand when sandblasting. This material is generally only used on very heavy duty equipment with severe corrosion.
Sleeper
A slang term for a vehicle, that at first glance, looks slow but upon acceleration - leaves you in the dust! The term sleeper was phrased from the idea that the car first looks like it is sleeping, but then awakes with a fury!
Slicks
Wide, rear tires generally used in racing. These tires do not have any tread on them.
Slip Yoke
See "Yoke".
Soda Blasted
A material used in place of sand when sandblasting. Soda is similar to sand, but is not as abrasive and does not warp thin sheet metal.
Splines
A series of grooves generally located on the end of a shaft that slide into a grooved hole with a matching series of grooves. This interlocking series of grooves holds the components together.
Steering Gear Box
The housing that contains the gears that transfer the steering wheel motion to the undercarriage steering linkage.
Stick Shift
See Manual Transmission.
Stock
A vehicle that is all original. Primarily, it has not been changed from it's factory original condition. If restored, it is restored to the condition it was in when it came off the assembly line.
Street Legal
Licensed to be driven on public roadways.
Stripped
Term used to describe a stolen or wrecking yard vehicle that has had most of it's parts removed. This term is also used to describe a vehicle that has had all of its paint removed to bare metal.
Stripped Down
Term used to describe a factory vehicle without any accessory options or fancy gadgets. Slang term for this is "plain jane".
Strut Rods
Rods made from forged steel that attach to the front frame or sub-frame and are connected to the lower control arm. They are adjustable and contain nylon or rubber insulator bushings. Strut rods are designed to limit forward and backward suspension drift.
Sub Frame
Some vehicles have a uni-body with a bolt-on frame. This bolt-on frame is generally located on the front of the car, holding the engine and front suspension. A frame like this is referred to as the sub frame.
Suspension
All of the components that connect the wheels to the uni-body or frame.
Suspension Drift
A term referred to when the vehicle's suspension moves forward or backward during rough road conditions. The suspension is designed to move up and down and strut rods are used to minimize this drifting forward and backward movement.
Suspension Springs
These springs come in two forms. A coil spring and a leaf spring. Both springs are used to ensure a smooth ride.
Third Member
Another name used to describe a removable gear assembly in an automobile rear end housing.
Top End
Vehicle's top racing speed.
Torque
A measurement of pressure used to determine an engine's pulling power. Usually measured in "ft-lbs" (foot pounds).
Trailer Queen
Slang term used to describe a classic vehicle that is restored to such a nice condition, that it is rarely driven. Usually, it is only transported via trailer to classic car shows and gatherings.
Transmission
The unit bolted behind an engine that transfers power from the engine to the driveshaft and differential. This unit is hydraulic or manual.
Tubbed Out
A modification made to a vehicle. This modification involves cutting out the rear inner fenders to make room for wide tires or racing slicks.
Un-Cut
Slang term used to describe something that has not been modified or changed from its original condition.
Undercarriage
The bottom or underside of a vehicle.
Uni-body
Preformed sheet metal components that are welded and bolted together to form a complete body, without the use of a full frame. Uni-bodies often have a sub frame.
Upgrades
See "Options".
Vintage Mustang
Also known as Classic Mustang. We're a bit partial here, but Vintage Mustangs are simply the best Mustangs around! They are the first generation Mustangs made between 1964 and 1973.
Viscosity
Consistency or thickness of a liquid lubricant. For example, 30W motor oil is thinner than 90W gear oil. The higher the number, the thicker the oil. The number refers to the viscosity or thickness of the oil and the "W" is an abbreviation for "weight".
W (Code)
The letter "W", when used with Ford or Mercury part numbers, indicates a Cougar body style. For example, in "C7WB", the "W" indicates "Cougar".
W (VIN Code)
The letter "W", when used in 1968 Mustang VIN numbers, indicates a Mustang with a 427 engine.
Wheel Base
The measurement used to describe the distance between the center of the front wheel to the center of the rear wheel.
Wheel Hop
A common term that refers to poor front end alignment. One wheel is out of alignment and tends to make a short series of bouncing motions, or "wheel hopping".
X Code
The "X" character was used in VIN numbers and casting numbers to designate an experimental design and was only scarcely used. For instance, in 1966, engine code "X" was a 352 2V. In 1968, engine code "X" was a 390 2V. These engines were only used on rare occasions during assembly.

In addition, a common casting number was C9OX. This casting number was used on experimental high rise intake manifolds.

Y Block
The common term given to the 1955-1957 Ford Thunderbird V8 engines 292 and 312.
Yoke
Also referred to as "slip yoke". This is a splined tube that fits on the front end of the driveshaft and slips into and over the output shaft of the transmission.
Z (Code)
The letter "Z", when used with Ford part numbers, indicates a Mustang body style. For example, in "C5ZB", the "Z" indicates "Mustang".
ZZ (VIN Code)
The letters "ZZ", when used with Mustang VIN numbers, indicate a Mustang with a Boss 429.
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