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Richmond Gear GM75355 Ring and Pinion Set 3.55 Ratio GM 7.5" 10-Bolt

(Cadillac DeVille 1982-84, Fleetwood 1982-90, Brougham 1987-90; Chevrolet Camaro 1982-2002, S10 1982-2004, Impala 1977-85, 1994-96 + 54 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

GM75355
13 reviews
Sale Price

$197.22

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Product Details

The EXCEL from Richmond GM75355 is a high-quality ring and pinion gear set engineered for GM 7.5" (7.625") 10-bolt rear differentials. This gear set provides a 3.55:1 final drive ratio, offering an excellent balance between acceleration and fuel economy for street and mild performance applications.

Key Specifications:

  • Gear ratio: 3.55:1
  • Fits GM 7.5" (7.625") 10-bolt rear differentials
  • Also compatible with GM 7.6" independent front suspension (IFS) applications
  • Requires a 3.23 and numerically higher ratio carrier
  • Precision-machined ring and pinion gears for proper tooth contact
  • Heat-treated steel construction for durability and longevity

Important Installation Note: This gear set requires a carrier designed for 3.23 and higher (numerically) gear ratios. Verify your existing carrier compatibility before installation. Professional installation and proper setup with new bearings, seals, and gear oil is strongly recommended for optimal performance and longevity.

Richmond Gear's EXCEL line delivers OEM-quality performance at a competitive price point, making it an ideal choice for differential rebuilds, ratio changes, and performance upgrades on GM trucks, SUVs, and passenger cars equipped with the popular 7.5" rear axle.

Products specifications

Fits

Cadillac DeVille 1982-84, Fleetwood 1982-90, Brougham 1987-90; Chevrolet Camaro 1982-2002, S10 1982-2004, Impala 1977-85, 1994-96, Colorado 2004-13, Malibu 1973-83, Blazer 1995-2001, Caprice 1977-96, El Camino 1977-87 + 49 more models

Pinion Spline Count

27

Ring Gear Rotation

Standard

Ring Gear Tooth Quantity

39

Pinion Shaft Diameter

1.438

Cover Bolt Quantity

10

Ring Gear Bolt Quantity

10

Pinion Gear Tooth Quantity

11

Differential Carrier Break

3.23 and Higher

Ring and Pinion Gear Ratio

3.55

Ring Gear Diameter

7.5

Ring Gear Material

8620 Steel

Prop 65

Cancer and Reproductive Harm - www.P65Warnings.ca.gov
WARNING: Cancer - www.p65warnings.ca.gov

Differential Case Design Type

GM 7.5

Differential Case Design Type

GM 7.6 IFS

Differential Case Design Type

GM 7.625

Differential Carrier Break

3.23 Ratio and Higher

Fast easy and convenient

Good experience

great prices

Fast and easy checkout process and incredible pricing. Thanks Autoplicity!

Great just what I wanted.

Cheapest place I found for High Performance Rotors. :)

Ordering was easy. Hope the part fits.

Fast and easy

goodprice

it was very easy and simple, thank you

Very good deal and simple buying experience.

good

PART CAME IN FAST!!! Can't wait to tear it open

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