Automotive Technical and Reference Information

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

How To & DIY

How To Identify a 4L60E Transmission and Decipher Case Tags

March 28, 2022 Roadkill Customs How To & DIY, Technical Info

Various case changes and other differences in the 4l60E Transmission variations since 1993 are discussed with a full list of Tag ID meanings. [More…]

Technical Info

GM LS Engine Specifications and History

January 18, 2021 Roadkill Customs Technical Info

Every LS engine in order of release from the LS1 launch in 1997 to the awesome LS9 in 2009 to the last Gen IV LS engines in 2017 is detailed. [More…]

Automotive Basics

Automotive Electrical Circuits 101

May 7, 2018 Roadkill Customs Automotive Basics, Technical Info

Two Guys Garage co-host Kevin Byrd clearly explains automotive electrical circuits and how they work to power your automobile. [More…]

References, Charts, and Part Identification

Math, Conversions, and Equivalents

• Automotive Math Formulas and Conversions
• Decimal Equivalents of Common Fractions
• Equivalent of Wire and Sheet Metal Gauges in Inches

Part and Vehicle Identification

• Axle Flange Housing Identification
• Differential Identification Chart
• Early Ford Beam Axle Identification and Dimensions
• Popular Automatic Transmission Identification Chart

• 1902-2007 GM Vehicle Specification Sheets
• 1946-53 American Classic Car Technical Sheets
• Classic Vehicle Identification Sheets

• GM Body Style Codes
• Mopar Body Style Codes

• How To Decode Ford Part Numbers

• Chevrolet Engine Block Numbers
• Ford Engine Block Numbers
• Mopar Engine Block Numbers

Engine

• Alternator Wire Gauge Size Chart
  • How To Test and Troubleshoot Alternators
• Calculate the Size of Carburetor Needed in CFM
• Connecting Rod Ratios
• Firing Orders, Distributor Location, Rotation Direction
  • How To Set Ignition Timing
• LS Engine Specifications and History
  • LS Swap Essentials: What You Need To Know
  • There’s an LS Engine Swap for Every Build Budget

• Popular V8 Engine Swap Dimension Chart
• OBD / OBD-II Diagnostic Trouble Code Look-Up

• More Engine Information and Articles…

Transmission

• Popular Automatic Transmission Identification Chart
• Popular Automatic Transmission Dimensions
• Popular Manual Transmission Dimensions
• Transmission Gear Ratio Chart
• Transmission Cross Reference

• More Transmission Information and Articles…

• Engine / Transmission / Chassis Donor Search

Sizing and Dimensions

• Determining Proper Exhaust Tubing Size
• Determining Steering Spline Size
• Guide to Wires and Fuses

• Old Tire Size Guide: Radials, Poly/Fibers, Bias-Ply’s, Cheater & Drag Slicks
• Rear-End Widths of Classic American Cars
• Wheelbase Measurement Cross-Reference
• Wheelbase Measurements for Popular Classic Cars
• Wheel Bolt Pattern Cross Reference

• Early Ford Beam Axle Identification and Dimensions
• Popular Automatic Transmission Dimensions
• Popular Manual Transmission Dimensions
• Popular V8 Engine Swap Dimension Chart

• More Measurements and Dimensions…

Hot Rod Glossary, Terms

• Glossary of Automotive Paint Terms
• Glossary of Hot Rod of Terms
• Glossary of Racing Terms

• Traditional Hot Rod Reference Books You Should Own

Calculators

• Calculate the Size of Carburetor Needed in CFM
• 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

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