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  #1  
Old 12-08-2007, 08:36 PM
caddydaddy caddydaddy is offline
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1977 Olds Ninety-eight transmission

What trans does the '77 Ninety-Eight have with the 403 engine? A TH-400? Also, does any one know what gear ratios it used, and whether it was a short or long tailshaft trans?
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Old 12-09-2007, 12:51 AM
dmanlyr dmanlyr is offline
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Re: 1977 Olds Ninety-eight transmission

Every one that I have seen has used the TH350 long tailshaft, although I am not quoting any factory specs, just what I have observered.

David
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Old 12-09-2007, 10:02 AM
maxwedge maxwedge is offline
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Re: 1977 Olds Ninety-eight transmission

Correct.
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Old 12-09-2007, 11:03 AM
caddydaddy caddydaddy is offline
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Re: 1977 Olds Ninety-eight transmission

OK, thanks! Does a TH-400 bolt up in place of a Th-350?
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Old 12-09-2007, 02:31 PM
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Re: 1977 Olds Ninety-eight transmission

In addition to the TH-350 some also came with the TH-400 & TH-200! If you do in fact have the TH-350, the TH-400 should be a bolt-in exchange as long as you have the same “long tail-shaft”. You may need to change the driveshaft yoke. IIRC, the TH-400 has a larger output shaft.

You need to check the identification tag on your transmission to ensure that you properly identify the unit; this tag is typically located on the drivers side of the transmission above the pan.
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