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Old 02-10-2016, 01:22 PM   #46
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Join Date: Sep 2013
Location: Vacaville CA
Posts: 510
Re: 4L80E & TH400 Tech.

I haven't been inside this trans but all indications are that it's an original 85k mile '70. Shifting so soft I doubt I'm close to breaking at present settings. I suppose the trans could just be tired but it sure works well otherwise. The only reason I'd firm it is so that it's not destroying itself.
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