Our automotive technical and reference resources are here to make your life easier and 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…
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Technical Articles
References, Charts, and Part Identification
- Automotive Math Formulas and Conversions
- Decimal Equivalents of Common Fractions
- Equivalent of Wire and Sheet Metal Gauges in Inches
- Guide to Wires and Fuses
- Axle Flange Housing Identification
- Classic Vehicle Identification Sheets
- Connecting Rod Ratios
- Differential Identification Chart
- Early Ford Beam Axle Identification and Dimensions
- Firing Orders
- LS Engine Specifications and History
- Popular Automatic Transmission Identification Chart
- Popular Automatic Transmission Dimensions
- Transmission Gear Ratio Chart
- Alternator Wire Gauge Size Chart
- Determining Proper Exhaust Tubing Size
- Determining Steering Spline Size
- How To Decode Ford Part Numbers
Look-Ups and Cross References
- OBD / OBD-II Diagnostic Trouble Code Look-Up
- Rear-End Widths of Classic American Cars
- Tire Size Guide: Radials, Poly/Fibers, Bias-Ply’s, Cheater, and Dragster Slicks
- Transmission Cross Reference
- Wheelbase Measurement Cross-Reference
- Wheelbase Measurements for Popular Classic Cars
- Wheel Bolt Pattern Cross Reference
Calculators
- Differential Gear Ratio Calculator
- Engine Displacement Calculator
- Engine Compression Ratio Calculator
- Horsepower Gain from Additional Blower Pressure Calculator
- Speed Potential Calculator for Ring Gear and Pinion Changes
- Tire Change / Speedometer Change Calculator
