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

Hood Rides & Hoopties

Wheel Bolt Pattern Cross Reference ~ What Wheels Fit?

February 8, 2016 Roadkill Customs Hood Rides & Hoopties, Technical Info

Use the Wheel Bolt Pattern Cross Reference to select your wheel bolt or lug pattern: Select Number of Lugs and Stud Spread in either Inches or Millimeters. The results will display Make, Model and Year as well as the OEM Wheel Size (diameter and width) plus Stud Size, Hub Center Bore and Offset. [More…]

Technical Info

Popular Manual Transmission Dimensions

January 26, 2021 Roadkill Customs Technical Info

T5, T10, T56, A-833, Toploader Transmission Measurements ModelABCDEF GM Super T10, Muncie, Saginaw6.3″14.2″23″N/AN/A3.75″ GM T5 (V8)6.3″16″25″19″21.2″3.75″ GM T56, F-car (production)4.9″21″26.4″21.1″23.9″3.75″ GM T56, F-car (aftermarket)**6.3″21.5″27″21.6″21.6″3.75″ Ford T56.94″14.5″24.125″N/AN/A5.5″ Ford Toploader6.38″13.25″24.125″N/AN/A5.5″ Mopar A-8337.38″15.28″27.01″N/AN/A2″ or 2.76″ **Dimensions B through [More…]

Technical Info

Big Vehicle Overdrive ~ 4L80E Transmission Basics

September 15, 2018 Roadkill Customs Technical Info

When your big engine and TH400’s lack of overdrive has your engine screaming on the highway, a 4L80E transmission might just be the answer. [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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