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Richmond Gear 49-0278-1 Ring and Pinion Gear Set 3.42 Ratio GM 7.5/7.625

(Chevrolet Silverado 1500 1999-2020, Silverado 1500 HD 2001-03, 2005-06, Suburban 1500 1995-2014, Camaro 1970-81, Tahoe 1995-2015 + 150 more models)

Part of: Richmond Gear Excel Differential Ring and Pinion Set

Other options in this family: Richmond Gear F9411 Richmond Gear F88410 Richmond Gear 4900391 Richmond Gear 12BC373T Richmond Gear 6903041

Manufacturer

Picture for manufacturer Richmond Gear

Part Number

4902781
4 reviews
Sale Price

$372.41

4 left at this price

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Product Details

The Richmond Gear 49-0278-1 is a high-performance ring and pinion gear set engineered for GM 7.5" and 7.625" rear differentials. This gear set features a 3.42:1 (3.423) gear ratio, providing an excellent balance between acceleration and fuel economy for street and light performance applications.

Key Features:

  • 3.42:1 gear ratio optimized for improved acceleration and drivability
  • Precision-machined from high-strength steel for durability and longevity
  • Designed specifically for GM 7.5" (7.625") 10-bolt rear axles
  • CNC-cut gear teeth ensure proper contact pattern and quiet operation
  • Heat-treated for maximum strength and wear resistance
  • Includes matched ring and pinion set for optimal performance

Richmond Gear is known for manufacturing quality drivetrain components that meet or exceed OEM specifications. This ring and pinion set is ideal for vehicles requiring a gear ratio change for tire size compensation, improved performance, or restoration to factory specifications. Professional installation and proper setup with new bearings and seals is recommended for best results.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2020, Silverado 1500 HD 2001-03, 2005-06, Suburban 1500 1995-2014, Camaro 1970-81, Tahoe 1995-2015, S10 1994-2004, Impala 1971-85, 1994-96, Colorado 2007-13, Malibu 1973-77, C1500 1988-99 + 145 more models

Calculator

Gear Ratio Calculator

Carrier Series

3

Cover Bolts

10

Installation Kit Included

No

Notes

Gear set requires a 2.73 or numerically higher, 3 series carrier. Will not work with factory ABS reluctor ring.

Pinion Gear Teeth

12

Pinion Shaft Diameter (in)

1.626 in.

Pinion Spline Count

30

Quantity

Sold as a set.

Ring and Pinion Ratio

3.42:1

Ring Gear Bolts

10

Ring Gear Diameter (in)

8.500 in.

Ring Gear Rotation

Standard

Ring Gear Teeth

41

Tool

Transmission Lookup

Differential Case Design Type

GM 8.5

Differential Carrier Break

2.76 and Higher

Pinion Gear Tooth Quantity

12

Cover Bolt Quantity

10

Ring Gear Material

8620 Steel

Ring Gear Diameter

8.5

Differential Case Design Type

GM 8.625

Ring Gear Tooth Quantity

41

Ring and Pinion Gear Ratio

3.42

Pinion Shaft Diameter

1.626

Ring Gear Bolt Quantity

10

Prop 65

WARNING: Cancer - www.p65warnings.ca.gov

Great transaction at a great price.

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