1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Rebuild original or swap in later gearbox

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Old 12-01-15, 12:35 PM
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Rebuild original or swap in later gearbox

Hi guys-hope everybody had a good Thanksgiving. I have a question on my 1979 SA. The gearbox needs a rebuild and I'm wondering if you think it's better to rebuild my existing one or swap in a later model gearbox that will bolt right up. I'm still a total newbie so please feel comfortable taking me to school here. Is there a reason to use a later gearbox related to durability? If I use a later gearbox what will bolt up in position the shifter in the existing console opening?
Old 12-01-15, 12:39 PM
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Originally Posted by Tdskip
Hi guys-hope everybody had a good Thanksgiving. I have a question on my 1979 SA. The gearbox needs a rebuild and I'm wondering if you think it's better to rebuild my existing one or swap in a later model gearbox that will bolt right up. I'm still a total newbie so please feel comfortable taking me to school here. Is there a reason to use a later gearbox related to durability? If I use a later gearbox what will bolt up in position the shifter in the existing console opening?
I would go for the rebuild or source out another 79-80 transmission . Later trans will not have the shifter in the same location its pushed back about 3".

Last edited by heynoman; 12-01-15 at 12:44 PM.
Old 12-01-15, 03:21 PM
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and the later one will be bad too
Old 12-01-15, 06:03 PM
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Originally Posted by j9fd3s
and the later one will be bad too
Thank you - I appreciate the coaching.
Old 12-01-15, 08:55 PM
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I have a 79 and I was asking the same questions and doing research some time ago. Basically, unless you're making enough power to justify needing a TII transmission then there is no reason to change from the stock trans.
Old 12-02-15, 06:57 AM
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Originally Posted by Joe428
I have a 79 and I was asking the same questions and doing research some time ago. Basically, unless you're making enough power to justify needing a TII transmission then there is no reason to change from the stock trans.
Thanks Joe
Old 12-02-15, 03:05 PM
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I think it's worthbuying it if you personally know the seller and buy another gearbox... that way as you rebuild yours your car isn't out of comission.
Old 12-02-15, 04:35 PM
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Originally Posted by Arcolithe
I think it's worthbuying it if you personally know the seller and buy another gearbox... that way as you rebuild yours your car isn't out of comission.
Thanks. I connected with Neptune in Huntington Beach for the rebuild.
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