TH350 slipping after sitting 8 months. normal? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-09-2010, 01:38 PM
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TH350 slipping after sitting 8 months. normal?

It it normal for a transmission to hesitate to shift if the car has been siting for roughly 8 months? My engines back in my formula, and before the rebuild, the tranny seemed fine, with an occasional rough shift to second. Now it acts as if its out of tranny fluid. I just put two quarts in, and it still does it. If I drive for a few blocks will this straighten out?

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Old 07-09-2010, 02:13 PM
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Where did the 2 qt's of fluid go while sitting for 8 mo? If you have any room left on the dip stick to add 12 oz. you might try a can of lucas transmission conditioner. It might help the seals and free up any sticky valves in the tranny. What year is your formula? If it's a 700R-4 it's not uncommon for a firm shift going into second when the tranny is still warming up. If you do drive it some more, check the fluid level a couple of times till it stay's on the full mark.

EDIT: sorry, I re-read your post and missed the 350TH. Same fix.

Last edited by sqzbox; 07-09-2010 at 02:15 PM. Reason: brain fart
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Old 07-09-2010, 06:00 PM
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thanks, ill check the fluid a few more times and drive around a bit more.

It's a '75 with '74 455.
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