Our automotive technical and reference resources are here to make your life easier — to help you find answers faster. From decimal/fraction charts to interactive calculators; from quick look-ups and cross-reference tools to general automotive information and videos to guide you through…
Reference Info ~ Look-Ups & Cross References ~ Calculators
Reference, Charts and Part Identification
- Automotive Math Formulas and Conversions
- Axle Flange Housing Identification
- Decimal Equivalents of Common Fractions
- Differential Identification Chart
- Equivalent of Wire and Sheet Metal Gauges in Inches
- Popular Automatic Transmission Dimensions
- Popular Automatic Transmission Identification Chart
- Transmission Gear Ratio Chart
Look-Ups and Cross References
- Connecting Rod Ratios
- Early Ford Beam Axle Identification and Dimensions
- Firing Orders
- OBD / OBD-II Diagnostic Trouble Code Look-Up
- Rear-End Widths of Classic American Cars
- Transmission Cross Reference
- Wheelbase Measurement Cross Reference
- Wheelbase Measurements for Popular Classic Cars
- Wheel Bolt Pattern Cross Reference
- Chevrolet Engine Block Numbers
- Ford Engine Block Numbers
- Mopar Engine Block Numbers
- GM Body Style Codes
- Mopar Body Style Codes
Calculators
- Engine Displacement Calculator
- How To Calculate Compression Ratio
- Horsepower Gain from Additional Blower Pressure Calculator
- Speed Potential Calculator for Ring Gear and Pinion Changes
- Tire Change / Speedometer Change Calculator
- Wheel, Tire and Fender Fitment Calculator
- How To Determine Proper Exhaust Tubing Size
- How To Determine Your Chevrolet Water Pump Type
- How To Make Sense of Synthetic Lubricants
- Lead-Acid Batteries Vs. Deep Cycle Batteries
- Mechanical Fuel Pumps vs. Electric Fuel Pumps
