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  Classic GM Car Restoration

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We do custom Automatic transmission tuning for performance and drivability,

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Tremec T5 5-speed conversion: The 5-speed is much larger than the TH350 automatic it is replacing. This process involves cutting the floor and fabricating a cover that will fit over the transmission and still allow for installation of a correct center console. See one of our conversion projects on the Keisler Transmissions website.


Careful surgery of the floor, with test fitting each step along the way.
Clecos hold the new custom formed tranny hump. Note OEM center console at right that must fit like a factory install.
For this automtic to manual conversion a second pedal must be added for clutch operation.
Custom fit - and looking good!