Abbreviations & Terminology
Below is a list of terms & abbreviations common to everything vehicle related (if you need a course on chat room lingo & abbreviations, Google it!). This will be a continuous work-in-progress so please feel free to post up your ideas, suggestions, and corrections. In an effort to keep the thread as clutter-free as possible, posts will be read, items will be added to the list, and non-pertinent threads will then be deleted.
Special Request: If you have a good link to a site or web page discussing some of the ins and outs of any of the items or topics below, please post them and I'll incorporate them in the list. Thanks ahead of time for everyone's help!
GENERAL:
2WD - Two Wheel Drive
4WD - Four Wheel Drive
AWD - All Wheel Drive
CCLB - Crew Cab Long Bed
CCSB - Crew Cab Short Bed
DD - Daily Driver
ECLB - Extended Cab Long Bed
ECSB - Extended Cab Short Bed
FWD - Front Wheel Drive
IFS - Independent Front Suspension
IRS - Independent Rear Suspension
NBS - New Body Style (2003 - 2006)
NNBS - New New Body Style (2007 and up)
OBS - Old Body Style (1999 - 2002)
RCLB - Regular Cab Long Bed
RCSB - Regular Cab Short Bed
SAE - Society of Automotive Engineers
SBC - Small Block Chevy
SOTP - Seat Of The Pants
SS - Super Sport
TBSS - Trail Blazer SS
TCS - Traction Control System
VATS - Vehicle Anti-Theft System (the coded chip in your ignition key)
WOT - Wide Open Throttle
ENGINE:
A/F - Air Fuel Ratio
BBC - Big Block Chevy engine
BBDC - Before Bottom Dead Center
BDC - Bottom Dead Center
BTDC - Before Top Dead Center
CCLB - Crew Cab Long Bed Truck
CI - Cubic Inches
CR - Compression Ratio
DBC - Drive By Cable
DBW - Drive By Wire
ECM - Engine Control Module
EGR - Exhaust Gas Recirculation
EGT - Exhaust Gas Temperature
FMU - Fuel Management Unit
FPR - Fuel Pressure Regulator
FPSS - Fuel Pressure Safety Switch
Gen lll - Generation 3 GM smallblock V8 engine (introduced 1997)
Hemi - A Hemi engine has a hemispherical shaped cylinder-head combustion chamber, like a ball cut in half
HP - Horsepower
IAC - Idle Air Control
IC - Ignition Control Circuit
LQ4 - The Vortec 6000, or LQ4, is a V8 truck engine. It is a bored version of the Vortec 5300. Displacement is 6.0 L (364 in³) from 101.6 mm bore and 92 mm stroke. It is an iron/aluminum (note that 2000 model year engines had cast iron heads) design and produces 300-325 hp (224-242 kW) and 360-370 ft·lb (488-502 N·m). LQ4s are built in Romulus, Michigan and Silao, Mexico.
LQ9 - The Vortec HO 6000 or VortecMAX, technically the LQ9, is a special high-output version of the Vortec 6000 V8 truck engine originally designed for Cadillac. This engine was introduced in other truck lines as VortecMAX for 2006. It features high-compression (10:1) flat-top pistons for an extra 10 hp (7.5 kW) and 10 ft·lbf (14 N·m), bringing output to 345 hp (257 kW) and 380 ft·lb (515 N·m). LQ9s are built only in Romulus, Michigan.
LS1 - Generation 3 GM smallblock V8 engine (introduced 1997)
LS2 - Generation 4 GM smallblock V8 engine (introduced 2005)
LS6 - Generation 3 GM smallblock V8 found in Corvette Z06 (introduced 2001)
LSA - Lobe Seperation Angle (camshaft)
MAP - Manifold Absolute Pressure (sensor)
N/A - Naturally Aspirated (all-motor)
PCM - Powertrain Control Module (your vehicles engine/tranny computer)
PCV - Positive Crankcase Ventilation (emissions system)
P&P - Ported And Polished
RPM - Revolutions Per Minute (engine speed)
RWD - Rear Wheel Drive
RWHP - Rear Wheel Horsepower
RWTQ - Rear Wheel Torque
TB - Throttle Body
TDC - Top Dead Center
TPS - Throttle Postion Sensor
TQ - Torque
VSS - Vehicle Speed Sensor
WB O2 - Wide Band Oxygen Sensor
SCR - static compression ratio
DCR - dynamic compression ratio
CAMSHAFT:
IVO - intake valve opening
IVC - intake valve closing
EVO - exhaust valve opening
EVC - exhaust valve closing
LCA -lobe center angle
ICL - intake centerline
ID - intake duration
ED - exhaust duration
VE - valve event
TRANSMISSION:
ATF - Automatic Transmission Fluid
FLT - Finish Line Transmissions
TC - Torque Converter (also less accurately referred to as a Stall Converter)
TB TC - Trailblazer SS Torque Converter
TM - Torque Management
INTAKE & EXHAUST:
CAI - Cold Air Intake
Cats - Catalytic Converters
FIPK - Fuel Injection Performance Kit
HFC - High Flow Cats
IAT - Intake Air Temperature
LT's - Long Tube Headers
MAF - Mass Air Flow sensor (measures amount of air entering intake)
O2 - Oxygen Sensor
ORY - Off Road Y-pipe
ST's - Short Tube Headers
FORCED INDUCTION & NITROUS:
BOV - Blow Off Valve
FI - Forced Induction
FIPK - Forced injection Performance Kit
FMIC - Front Mounted Intercooler
N20 - Nitrous Oxide
NOS - Nitrous Oxide Systems (brand name)
SC - Super Charger - A crank-driven air/fuel-mixture compressor, also called a blower. It increases atmospheric pressure in the engine to produce more horsepower.
Turbo - An exhaust-driven intake air compressor.
TT - Twin Turbo
TUNING:
HPP - Hypertech Power Programmer
KR - Knock Retard
PE - Power Enrichment (tuning)
SES - Service Engine Soon lamp (on dash)
LTFT or LTRIM - LongTerm Fuel Trim (tuning)
STFT or STRIM - Short Term Fuel Trim (tuning)
TRACK:
1/8 Mile - Pertaining to an 1/8th drag strip or the 1/8th mile portion of a 1/4 mile drag strip.
1/4 Mile - Pertaining to a 1/4 mile drag strip.
60' - Sixty-foot time - The time it takes a vehicle to cover the first 60 feet of the racetrack. It is the most accurate measure of the launch from the starting line and in most cases determines how quick the rest of the run will be.
Burnout - Spinning the tires in water to heat and clean them prior to a run for better traction.
Holeshot - When a driver reacts quicker to the Christmas Tree to win a race against an opponent with a quicker E/T.
Interval Timers - Part of a secondary timing system that records elapsed times, primarily for the racers’ benefit, at 60, 330, 660, and 1,000 feet.
Tree - Also called a Christmas Tree, it is the electronic starting device between the lanes on the starting line. It displays a calibrated-light countdown for each driver.
Tree (Sportsman Tree) - Used for bracket and handicap racing, consists of each yellow lighting 0.5 seconds after the one above it. The green comes on 0.5 seconds after the last yellow is lit. If the race is a handicap race each side of the tree will have its own timing.
Tree (Pro or Full Tree) - Used in Competition, Super Stock, and Stock, for which a handicap starting system is used to equalize competition. The three amber bulbs on the Christmas Tree flash consecutively five-tenths of a second apart, followed five-tenths later by the green starting light. A perfect reaction time on a full Tree is .500.
DR's - Drag Radials
E/T - Elapsed Time or the time it takes a vehicle to travel from the starting line to the finish line.
Heads-Up - Refers to a race in which 2 competitors
Foul Start - Indicated by a red light on the Christmas Tree when a car has left the starting line before the green light, or starting signal.
R/T - Reaction Time - The time it takes a driver to react to the green starting light on the Christmas Tree, measured in thousandths of a second. The reaction-time counter begins when the last amber light flashes on the Tree and stops when the vehicle clears the stage beam.
Stage (Pre) - To position the front wheels about seven inches behind the starting line so the small yellow lights atop that driver’s side of the Christmas Tree are glowing. The next step is to stage and be ready to race.
Stage - To position the front wheels right on the starting line so the small yellow lights below the pre-stage lights are glowing. Once both drivers are staged, the calibrated countdown (see Christmas Tree) may begin.
Stage (Deep) - To roll a few inches farther into the beams after staging, which causes the pre-stage lights to go out. In that position, a driver is closer to the finish line but dangerously close to a foul start.
Traps or Speed Traps - The final 66 feet to the finish line where speed is recorded.
Weight Transfer - Pertains to vehicles with traction issues. The goal for RWD vehicles, is that they are set up to provide a desired weight transfer to the rear wheels. Upon acceleration, the front wheels lift and the weight shifts to the rear wheels, which makes them less likely to spin.
