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Old 11-20-2003, 08:48 AM
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TH400 Driveshaft length

I'm swapping my Powerglide trans for a TH400 in a 69 Chevelle, and I know I will have to find a new driveshaft. I was wondering if anyone knows the length I will need, or if manual trans was the same length as a TH400? The trans originally came out of a Suburban, but when I have the rebuild done, it will be getting a new tail shaft housing.
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Old 11-20-2003, 04:17 PM
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Two door Chevelles and 4 door Chevelles have a different wheelbase.......so they have different lenght driveshafts...

Is yours a 2 door or a 4 door?

The best way is to have the proper yoke......push it ALL the in.......pull it out 3/4 to 1 inch and then measure the distance between cups........have one made........

OR FIND ONE THAT LENGHT.........



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Old 11-21-2003, 12:31 PM
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I have a 2 door coupe.

I thought I might be able to save a few bucks if I can find one the right length and freshen it up. My last resort is to have a custom shaft made up.
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Old 11-22-2003, 01:37 AM
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A T-400 with the 4" tailshaft housing is about the same length as a PG, but the yoke is probably different. I put a T-400 where a Muncie 4-speed was & only needed a conversion U-joint to match the driveshaft to the T-400 yoke.
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Old 11-22-2003, 08:46 AM
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Like Jim said... measure the tail shaft length and go from there. Most big cars and trucks used the longer tailshaft so it depends on where your tranny came from as to the length...
Mark
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