C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Nash 4+3 Overdrive Question

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Old Feb 21, 2008 | 06:44 PM
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Default Nash 4+3 Overdrive Question

I want to change the AT fluid in the OD Unit. How much AT fluid does it hold?

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Old Feb 21, 2008 | 07:07 PM
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Takes about 2 quarts. Get some regular Dexron II/III fluid.

There is some fluid in the lines running to the cooler. You can remove both lines and use failry low air pressure to push the old fluid out.

Re-install the lines and after installing the pan, fill the OD unit. Spin a back wheel for a couple minutes to push fresh ATF thru the lines. Once you have done that, top off the OD unit.

Are you replacing the filter at the same time? You know you can get one fairly cheap ($6-$8) at part stores.
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