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Low prices on Gear Packages, Axle Kits, Ring & Pinions, Lockers, Pozi's, Kits, etc. Find Tips, FAQs, and How-To Technical Help on Gears, Ring & Pinions, C-Clips, Carriers, Limited Slips, Locking Differentials, Positraction, Worms, Assembly, Yukon products, Bearing Pullers, Housing Spreader, Super Joint Installation, Noise, Differentials, Spedometers, rearend parts, driveline angles & vibration, etc. Calculators for RPM, Tire Height, Gear Ratio, Engine Displacement, Inches to Liters, Rod Ratio, Horsepower, etc. Brochure Requests, Information Kits, Policies, Promotions, Contact Us About Randy's Ring & Pinion Catalogs, Brochures, Screen Savers, Wallpapers, Newsletter, Technical Help
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Fixing a chipped Pinion Gear

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RPM Calculator
   Enter Ratio, Tire Height, and Speed (mph) then click Solve to calculate RPM


Recommended Towing RPM
4 cyl 2200-3200
6 cyl 2000-3000
Big Block 1600-2600
Small Block 1800-2800
Ford 6.0L 1900-2400
Ford Diesel (Non-Turbo) 1600-2500
Ford Diesel (Turbo) 1400-2200
Dodge Diesel 1400-2200
GM Diesel 6.2L 1800-2800
GM Duramax Diesel 1800-2400


Transmission Gear Ratios   Transmission Gear Ratio Chart   Transmission Gear Ratios

Tire Height Calculator

Calculators designed for Internet Explorer only.
Randy's Ring & Pinion makes no guarantee to the accuracy of calculations. Please email with any calculation errors.
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