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3.73 Gears Chevy

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The Best 3.73 Gears Chevy of 2023 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best 3.73 Gears Chevy of 2023. Check our ranking below.

2,518 Reviews Scanned

Rank No. #1
CHEVY GM 8.5" 10-Bolt Ring and Pinion 3.73 Ratio Gears & Master Bearing/Installation Kit
  • BRAND NEW GM 8.5" 10-Bolt Ring & Pinion & Master Bearing/Installaton Kit
  • 3.73 Ratio
  • Master Bearing/Installation Kit Includes: Carrier Bearings/Races, Pinion Bearings/Races, Pinion Seal, Pinion Nut, Pinion Shims, Crush Sleeve, Carrier Shims, Ring Gear Bolts, Gasket, Marking Compound, Brush & Lock-Tite
  • This Bearing kit will fit stock carriers. For aftermarket Eaton/Auburn Posi Units with HD Bearings see other listings.
SaleRank No. #2
Richmond Gear 49-0039-1 Differential Ring & Pinion Set, GM 8.875" (12-Bolt), 3.73 Ratio, Compatible with Chevrolet Camaro, Chevelle, Impala, Pontiac GTO, Firebird, Oldsmobile 442 (1964-1973), Buick
  • ✅ Performance Gear Upgrade: 3.73 ratio enhances acceleration, power, and drivetrain efficiency for GM 8.875" rear differentials.
  • ✅ Premium 8620 Steel: Built for durability, strength, and smooth, quiet operation in high-performance applications.
  • ✅ OE Fitment & Compatibility: Precision-machined 12-bolt design, requires a 3.07 to 3.73 ratio carrier for GM vehicles.
  • ✅ Ideal for Street & Muscle Cars: Perfect for classic GM cars, improving power delivery, towing, and performance.
  • ✅ Reliable Warranty: Backed by a 2-year / 100,000-mile warranty for long-lasting reliability.
Rank No. #3
Motive Gear G885-3.73 Differential Ring and Pinion, 3.73 Ratio, Compatible For Fits GM 8.5"/8.625" (10 Bolt), Compatible with Buick Regal 1973-1987, Chevy Blazer 1987-1994, Durable 8620 Steel
  • High-Performance Design: The Motive Gear G885-3.73 features a 3.73 ratio for improved torque and power transfer, tailored for GM 8.5"/8.625" differentials with 10-bolt configurations.
  • Wide Compatibility Range: Fits a variety of vehicles, including Buick Regal (1973-1987), Chevy Blazer (1987-1994), and Cadillac Escalade (1999-2013), ensuring versatile application.
  • Premium Build Quality: Made with 8620 steel for exceptional durability and resistance to wear, providing reliable performance for both street and off-road driving.
  • Optimized Specifications: Includes 41-tooth ring gear, 11-tooth pinion gear, 30-spline pinion shaft, and a carrier for 2.73 and numerically higher ratios, ensuring precision fit and smooth operation.
  • Warranty and Reliability: Backed by a 2-year or 100,000-mile warranty, delivering dependable support and peace of mind for all high-performance and restoration needs.
Rank No. #4
GM 8.2" Chevy 10-Bolt Ring & Pinion Gears - 3.73 Ratio
  • 8620 Heat-Treated Material
  • 25 Spline Pinion
  • C-Clip Applications w/ Rear Cover
  • Will NOT work in BOP or 55-64 Chevy Drop-Out Applications
SaleRank No. #5
Motive Gear D44-373 Differential Ring & Pinion Set 26 Spline 10-Bolt for Ratio 3.73 Fits Dana 44 Standard & ICA, Compatible for Jeep Wrangler, Chevy, Dodge Ram, Ford Bronco, Replaces Spicer, Yukon
  • ✅ Dana 44 3.73 Ring & Pinion Set – Precision-engineered for smooth torque transfer, durability & improved performance in Dana 44 Standard & ICA differentials.
  • ✅ Premium 8620 Steel Construction – Heat-treated for extreme strength, wear resistance & longevity under demanding conditions.
  • ✅ Direct OE Replacement & Easy Install – Ensures factory fitment, minimal noise, and reliable operation for various 4x4 and off-road applications.
  • ✅ Compatible with Jeep, Chevy, Dodge, Ford & More – Fits Wrangler, Blazer, Ram, Bronco, and other models (see full list).
  • ✅ Replaces Spicer 22736X, Yukon YG D44-373 & More – Backed by a 1-year/50,000-mile warranty for confidence in quality and performance.

Last update on 2025-07-16 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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FAQ:

Q: What should the overall first gear ratio be?

A: Overall first gear ratio is first gear in your transmission x rear end gear. From what I have read you really want a rear end gear between 8.0-10.00. Higher the number on your overall first gear ratio the harder your launch. Anything under 8.0 is going to be pretty slow.

Q: What’s the gear ratio for a TH400 engine?

A: Anything under 8.0 is going to be pretty slow. I have ran a 2.73 Rear End with a Th400 with an overall gear ratio of 6.77. That thing was pretty slow with a stock 350 engine. However you can compensate for poor gearing with a lot of torque so if you running a 600HP/TQ big block having a lower gear wont matter as much.

Q: Can you compensate for poor gearing with poor torque?

A: That thing was pretty slow with a stock 350 engine. However you can compensate for poor gearing with a lot of torque so if you running a 600HP/TQ big block having a lower gear wont matter as much. I have put some examples below using the gear calc program to give you an idea of what kind of differences you see by changing you rear end gear.

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