HOW TO DO IT! CLICK
Axles
http://www.axlebuilder.com/
Differentials
https://en.wikipedia.org/wiki/Differential
https://en.wikipedia.org/wiki/Differential_(mechanical_device)
http://auto.howstuffworks.com/differential.htm
http://tomsdifferentials.com/
http://www.justdifferentials.com/
Driveshaft
http://www.dennysdriveshaft.com/potential_speed_calculator.html
How to Articles
https://www.reference.com/science/calculate-gear-ratios-b8f0e307fccb3d69?qo=cdpArticles
https://www.reference.com/vehicles/can-gear-ratio-calculator-766c235725278d1d?qo=cdpArticles
https://www.reference.com/math/calculate-ratios-6e734fd478953a2b?qo=cdpArticles
Tech Tips
https://www.summitracing.com/expertadviceandnews/professoroverdrive
Instruction Library
https://www.summitracing.com/expertadviceandnews/instructionlibrary
Charts and Guides
https://www.summitracing.com/expertadviceandnews/chartsandguides/contentsearch
Gears / Ring and Pinions
http://performance-gearing.com/
https://www.summitracing.com/expertadviceandnews/calcsandtools/gear-ratio-calculator
https://www.richmondgear.com/wp-content/uploads/calculator/gear-ratios-calculator.html
http://www.csgnetwork.com/rgpspeedcalc.html
http://www.crawlpedia.com/gear_tooth_calculator.htm
http://g2axle.com/pages/view/gear_ratio_calculator
http://www.cargister.com/calculator-gear-ratio
http://www.nationaldrivetrain.com/calculator.php
https://www.hgmelectronics.com/support-gear-ratio-and-tire-size-calculator
Racing Calculators
http://www.prosystemsracing.com/calculate.html
Rear Gearing
http://www.stl-vettes.com/65Vette/Trans_Gearing/Trans_Gearing.htm
Transfer Case / Gearbox
http://www.scsgearbox.com/gear-calculator/transfer-case-calculator/
4x4 Calculator
http://www.offroaders.com/info/tech-corner/reading/calculators.htm
http://www.autoanything.com/drivetrain-differentials/gear-ratio-calculator
Videos: How to Calculate Gear Ratios
https://youtu.be/i_Enyf67KTs
https://youtu.be/oDVpyhKEbaw
https://youtu.be/359TMmQ6CTQ
https://youtu.be/ORdTuHnK7nA
https://youtu.be/44NXkU19aiA
https://youtu.be/fB0jrucjlxg
https://youtu.be/2y9iqvO7RaU
https://youtu.be/RNgjS5mHI0E
https://youtu.be/uU6WJXjZf4Y
https://youtu.be/xVv-aTxg_W4
QUOTE