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Department

Racing

Category

Driveline and Axles

Subcategory

Differentials

Rear Axle Family

Grand National

Spline Count

28

Products

Related Articles

GM 10-Bolt Identification and Upgrades | 7.625, 7.5, 8.2, 8.5, 8.6

GM 10-Bolt Identification and Upgrades | 7.625, 7.5, 8.2, 8.5, 8.6

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GM’s 10-bolt rear axle has been around since the 1960s, here’s how to determine if your junkyard find is worth taking home

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A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.

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Learn what gear oils do for your differential and how to choose the best gear lubricant for your application's needs

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A short article explaining the main differences between open and limited slip differentials.

GM 12-Bolt Rear End Identification & Upgrade Guide

GM 12-Bolt Rear End Identification & Upgrade Guide

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Decode, ID, and upgrade your GM 12-bolt rear end. Learn axle specs, gear ratios, and best performance parts upgrades.

How to Identify GM Transmissions | 700R4, TH350, 4L60, TH400, 4L80e, Powerglide, & More

How to Identify GM Transmissions | 700R4, TH350, 4L60, TH400, 4L80e, Powerglide, & More

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This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

GM Alternator Identification

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Putting a 32 Radiator in a 29 Roadster

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Tim talks about the process of adapting a full size 1932 Ford Radiator to fit in his 1929 Ford Roadster project.

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