FiTech GM X-Body Parts

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Muscle Car

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GM X-Body

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GM Body Styles

GM Body Styles

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Need a little help Identifying GM Body Styles 1964-1972? Click Here!

Replacing a G-Body 7.5" Bolt Rear End

Replacing a G-Body 7.5" Bolt Rear End

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Learn about the power behind the G-body platform and the steps to upgrade a 7.5" bolt rear end to a 8.5" to withstand high horsepower. See how to change the differential fluid and install new gaskets.

GM Alternator Identification

GM Alternator Identification

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Learn about GM alternator identification in our guide. We cover GM 3 wire alternators, 1 wire alternators, and externally regulated so you know what to choose.

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