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GM 10 Bolt 7.5 Ring & Pinion, 3.08 Ratio, 27 Spline-2 Series
GM 10 Bolt 7.5 Inch Ring and Pinion, 27 Spline, 3 Series

GM 10 Bolt 7.5 Ring & Pinion, 3.08 Ratio, 27 Spline-2 Series

GM 7.5 Inch 10-Bolt, 1.438" Shaft Diameter, 27 Spline Count, Steel

6 Reviews | 18 Answered Questions
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GM 10 Bolt 7.5 Inch Ring and Pinion, 27 Spline, 3 Series
GM 10 Bolt 7.5 Inch Ring and Pinion, 27 Spline, 3 Series
GM 10 Bolt 7.5 Ring & Pinion, 3.08 Ratio, 27 Spline-2 Series
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GM 10 Bolt 7.5 Inch Ring and Pinion, 27 Spline, 3 Series
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Part # 91913-308
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  • Change the gear ratio of your GM car with these 7.5" 10 bolt gear sets
  • These ring and pinion sets are manufactured to meet exact specifications to ensure a quality product every time
  • 3.23 and numerically higher ring & pinion ratios are designed for use with a "3 series" carrier
  • If you intend to install these ratios with a "2 series" carrier, you need to use ring gear spacer #910-48305
  • The 3.08 ratio ring and pinion set is for use with a "2 series" carrier

Details

Ratio:
3.08:1
Ring Tooth Count:
40
Pinion Tooth Count:
13
Shaft Diameter:
1.438"
Outside Diameter:
7.50"
Spline Count:
27
Material Type:
Steel
MFG. Part #:
91913-308
Sold in Quantity:
Set

Info

IMPORTANT NOTE: 3.23 and numerically higher ring & pinion ratios are designed for use with a "3 series" carrier. If you intend to install these ratios with a "2 series" carrier, you need to use ring gear spacer #910-48305. 3.08 ratio ring and pinion sets fit a "2 series" carrier and do not use a ring gear spacer.

  • 7.50" diameter ring gear
  • 1.438" diameter pinion
  • 27 splines

Application

  • 1975-79 Omega
  • 1982-99 Camaro/Firebird
  • 1983-99 S-10/S-15/Astro Van
  • 1976-79 Skylark
  • 1977-90 Fullsize Olds/Buick/Pont
  • 1977-96 Fullsize Chevy
  • 1978-81 Century/Phoenix/Ventura
  • 1978-87 Cutlass/Grand Prix
  • 1978-87 Monte Carlo/Regal

Warranties

Note: Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

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