Terms

See also abbreviations

• 1320 - Distance, in feet, of a 1/4 mile
• 19 lb, 24 lb, 30 lb … - indicates pounds of fuel per hour for fuel injectors
• 1.6 RR - 1.6” Roller Rockers
• 3G - alternator without external fan on SN95, higher output
• 302 - also called 5.0 or 5.0L, a small block Ford engine; in 1968 shorter connecting rods boosted displacement to 302 cubic inches; Ford discontinued this engine in 1996
• 315/60 - tire size example
• 351 - Ford engine
• 351W - Ford Windsor series
• 351C - Ford Cleveland big block series
• 385 - Ford other big block series
• 3-link - type of suspension; alternative is IRS or 4-link
• 3.55 - gear ratio; the higher the ratio, the higher the engine RPM to tire RPM
• 4-link - type of suspension; alternative is IRS or 3-link
• 427 S/C - refers to 427 Semi-Competition or Street Competition Cobra body and trim style circa 1965
• 4.6 or 4.6L - Ford small block engine
• 5.0 or 5.0L - designates 5 liter displacement; commonly refers to a 4.948 liter Ford 302 cubic inch engine
• 8.8 - Ford rear end size, in inches

• A9L - a type of EEC computer
• AFR - Air Flow Research
• AN - Army-Navy fitting used on engine plumbing like brake master cylinder hoses (see article)
• ATDC - After Top Dead Center; indicates timing degrees relative to TDC (Top Dead Center), see also BTDC

• BAP - Barometric Absolute Pressure sensor
• BB - Big Block engine
• BBK - an aftermarket parts manufacturer; vendor to FFR for headers
• B Cam or B303 - camshaft from Ford Racing
• bezel - metal finishing ring
• Boss 302 - High performance 302 Ford Racing engine (used on this build); see also 302
• Breeze - Breeze Automotive, a vendor
• BRG - British Racing Green color
• BTDC - Before Top Dead Center; see also ATDC and TDC

• carbed - a normally aspirated, or carburetor, engine; alternative is electronic fuel injection (EFI)
• clevis - a type of fastener that will allow rotation of the connected parts about the axis of the pin
• CSX - Carroll Shelby Exports, part of the number identification codes that went on Cobras, see also Vehicle Identification discussion
• cut pile - type of carpet frequently used in post-1980 American cars
• CV - Constant Velocity joint used in IRS suspension

• dB - decibels, a measure of sound intensity
• DD tube or Double D - a part of steering column shaft
• dizzy - slang for rotating automotive distributor
• DOHC - Double (or Dual) Overhead Cam
• DP - Double Pumper
• DS - Driver side, associated with PS (passenger side)
• D.S.S. - an aftermarket engine supplier
• DVSF - Double Venom Spring Fling
• double clevis - see also celvis, a fastener shaped like an “X” with two pins that allow rotation

• ears - rear axle connection points on differential, also called “pumpkin ears”, see also pumpkin
• E Cam or E303 - camshaft from Ford Racing
• ECT - Engine Coolant Temperature sensor
• EEC - Engine Electronic Controller or Computer
• EFI - Electronic Fuel Injection; alternative is normally aspirated engine with a carburetor
• EGR - Exhaust Gas Recirculation
• elephant ears - FFR front wheel well aluminum panels that resemble large ears

• F-panel - aluminum panel attached behind and above IFS, shaped like an F
• FE - Ford 332/352/390/406/410/427/428 big blocks
• ferrel - metal ring placed around a shaft for reinforcement or to secure a joint
• ferrule - cap, usually attached with a crimping tool, for wire ends
• FFCars - the FFR builder forums hosted at FFCars.com, previously known as FFCobra
• FFR - Factory Five Racing
• FFROG - Factory Five Racing Owner's Group
• FMS - Ford Motor Sports, a parts supplier
• FMU - Fuel Management Unit; boost sensitive pressure unit that closes off the return fuel line
• Fox - refers to 87-93 Mustang frame, suspension, drive train
• FPR - Fuel Pressure Regulator
• FR - Flaming River, a steering rack brand
• FRPP - Ford Racing Performance Parts
• ft.lb. - foot pound, a measure of torque

• gel coat - protective coating on fiberglass, refers to the unfinished Roadster shell (black on Mk3, red on Mk4)
• go cart - refers to a functioning Factory Five Roadster without the body
• graduation - to complete the FFR kit including paint and vehicle registration

• HB - Halibrand, a vintage wheel style
• HEI - High Energy Ignition
• HF - Harbor Freight tool supply company
• hotfoot - uncomfortable condition caused by insufficient cockpit insulation in footbox area

• I*2 - ISquared wiring harness
• IAC - Idle Air Control (solenoid)
• IAT - Intake Air Temperature sensor
• IFS - Independent Front Suspension
• IRS - Independent Rear Suspension; alternative is 3-link or 4-link

• KAM - Keep-Alive Memory, part of the EFI computer system
• KB - Kenne Bell supercharger, forces air into combustion chamber for higher speeds
• King pin - see KPIA
• KOEO - Key On Engine Off, status to check EEC codes
• KPIA - King Pin Inclination Angle, a component of suspension geometry, see FFR Mk4 modification

• LCA - Lower Control Arm of front or rear suspension

• MAF or MAS - Mass Air Flow sensor
• Mark I, Mark 1, or Mk1 - prototype 1993 FFR Roadster was developed into a commercial kit in 1995
• Mark II, Mark 2, or Mk2 - upgraded FFR Roadster model introduced June 2002
• Mark III, Mark 3, or Mk3 - upgraded FFR Roadster model introduced May 2004
• Mark 3.1, Mark 3,1, or Mk3.1 - upgraded FFR Roadster model introduced January 2008 that encompasses the Complete Kit first shipped in September 2007
• Mark IV, Mark 4, or Mk4 - upgraded FFR Roadster model introduced January 2010, see FFR Mk4
• MC - Master Cylinder, part of brake system
• meatballs - circular racing numbers located on Roadster door panels or body

• NA - Naturally Aspirated (as opposed to blown or supercharged)

• OT - Other Topic on FFR forum

• pancake - classic circular (or oval) air filter design
• PB - Power Brakes
• PBR - brake manufacturer
• PDO - Pin Drive Option IRS from FFR
• PDW = Pin Drive Width IRS from FFR
• PITA/PITR - Pain In The Rear on FFR forum
• PM - Private Message on FFR forum
• POM -Picture Of the Month on FFR forum
• PS - Power Steering
• PS - Passenger side, associated with DS (driver side)
• pumpkin - rear differential, see also ears
• PV - Piston to Valve clearance

• RAL - German paint matching system with 4-digit codes
• rolled edge - smooth finish for body contour, usually refers to cockpit surround and other openings, see FFR Mk4
• Ron Francis - manufacturer of FFR 3.1 Complete Kit wiring harness
• R&R - remove and replace
• RWHP - Rear Wheel Horse Power

• S2000 button - Honda's red Start Engine button
• SB - small block 289/302/351W engines
• S/C - Semi/Competition, a designation for the rare (only 30 production vehicles) and iconic Shelby Cobra 427 S/C
• SC - Speed Control; no SC on Cobra
• SD - Speed Density (87-88 Mustang) air control system
• Shelby - the American racer/automotive designer Carroll Shelby and/or his stable of cars, including the Shelby Cobra and Mustang
• SIG - Special Interest Group in FFR forum
• SN95 - 94-95 Mustang frame, suspension, drive train
• SOHC - Single Overhead Cam
• spout - plug connector, located near distributor, that disengages computer when timing is set on EFI systems
• stroker - any engine with a modified stroke length

• T5 - Borg Warner T5 transmission, 5 speed V8 Mustang
• TB - Throttle Body
• T-Bird SC - Thunderbird Super Coupe, an IRS donor
• TDC - Top Dead Center, a measure of piston travel; Ford 302 number 1 cylinder, used for timing with TDC, is on passenger side front of engine
• TFS - Trick Flow Specialties
• TKO - model of Tremec 5-speed transmission, heavy duty
• TPS - Throttle Position Sensor
• Tremec - 5-speed transmission, non-Ford, heavy duty
• TTO - Trailing Throttle Oversteer, a potentially dangerous rapid rear-to-front load shift due to throttle release in turns

• UCA - Upper Control Arms of front or rear suspension

• VIN - Vehicle Identification Number; original AC Cobras were manufactured prior to the modern VIN system
• VSS - Vehicle Speed Sensor

• wheel BS - Wheel backspace, see tire and wheel measurements
• WOT - Wide Open Throttle (accelerator pedal pressed to floor)