- 1BBL: One barrel carburetor
- 2BBL: Two barrel carburetor
- 4BBL: Four barrel carburetor
- AWD: All Wheel Drive
- FWD: Front Wheel Drive
- RWD: Rear Wheel Drive
- 2WD: Two wheel drive
- 4WD: Four wheel drive
- A.I.R.: Air Injection Reactor
- A/T: Automatic Transmission
- M/T: Manual Transmission
- S/T: Standard Transmission
- ACC.: Accessory
- AFM: Active Fuel Management (formerly known as displacement on demand (DoD))
- BDR: Bolt down rocker (non adjustable)
- CAM: Camshaft
- CARB: Carburetor
- CC: Cubic Centemeters
- MM: Millimeters
- L: Liter
- C.I.D.: Cubic Inch Displacement
- Ecotech: Emissions Control Optimization TECHnology
- DBL.: Double
- EXH: Exhaust
- INT: Intake
- MD: Medium Duty
- HD: Heavy Duty
- HI PERF: High Performance
- HYD: Hydraulic
- MECH: Mechanical
- OEM: Original Equipment Manufacture
- RAM: Ram Air Manifold
- V.I.N.: Vehicle Identification Number
- w/: With
- w/o: without
- A/C: Air Conditioning
- AUX: Auxiliary
- NAT. GAS: Natural Gas
- CNG: Compressed Natural Gas
- LPG: Liquid Propane Gas
- CAT CONV: Catalytic Converter
- CYL: Cylinder
- MLS: Multiple Layers of Stainless Steel
- E.G.R.: Exhaust Gas Recirculation
- NGC: Next Generation Controllers
- JTEC: Jeep Truck Engine Controller
- SBEC: Single Board Engine Controller
- VTEC: Variable (valve) Timing Electronic Control
- VVT: Variable Valve Timing
- ECM: Engine Control Module
- HO: High Output
- SHO: Super High Output
- HP: Horse Power
- FI: Fuel Injection
- CFI: Central Fuel Injection
- MFI: Multi Port Fuel Injection
- SPI: Sequential Port Injection
- DEFI: Digital Electronic Fuel Injection
- EFI: Electronic Fuel Injection
- SFI: Sequential Fuel Injection
- TBI: Throttle Body Injection
- OHC: Overhead Cam
- OHV: Overhead valve
- SOHC: Single Overhead Cam
- DOHC: Dual Overhead Cam
