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

4+3 transmission and overdrive fluid capacities

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Old Apr 3, 2002 | 10:11 AM
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Default 4+3 transmission and overdrive fluid capacities

What are the oil capacities of the 4+3 manual transmission and the overdrive unit? My Hayes manual fails to list those. I have a 1987 model.
Old Apr 3, 2002 | 10:29 AM
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Default Re: 4+3 transmission and overdrive fluid capacities (thecarnut)

1.75 quarts for the overdrive unit. I think it is 4 quarts for the 4-speed, but i am not positive.
Old Apr 3, 2002 | 12:36 PM
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Default Re: 4+3 transmission and overdrive fluid capacities (thecarnut)

you only have to fill them to the bottom of the fill plug hole , then put the plug back in

cya david
Old Jul 3, 2015 | 05:01 PM
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Default Resurrecting this thread from the dead!

So...I have a 86 manual 4+3 that needs tranny fluid. Where does one actually ADD the tranny fluid?!?! I can't find a place to add it and I'm afraid this is going to involve getting it up in the air - which will be difficult for me.

Anyone got any pointers?!?!

--clay
Old Jul 3, 2015 | 09:19 PM
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Holy resurrection Batman! This thread is over a dozen years old.

To answer your question, yes, you will need to get under your car to add trans fluid (both gear oil for the manual portion and atf for the od).
Old Jul 4, 2015 | 09:59 AM
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Default

Originally Posted by 89onlyZ51;1589975696[B
]Holy resurrection Batman! This thread is over a dozen years old.[/B]

To answer your question, yes, you will need to get under your car to add trans fluid (both gear oil for the manual portion and atf for the od).
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