TH400 CONVERTER INTO A POWERGLIDE - Yellow Bullet Forums

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Old 11-15-2011, 11:39 AM   #1
04 turbo
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Default TH400 CONVERTER INTO A POWERGLIDE

put a th400 converter in to a powerglide.
is the stall or anything else going to change.
thanks
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Old 11-15-2011, 01:09 PM   #2
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

It should go up some due to the lower gear ratio.

Jim
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Old 11-15-2011, 04:10 PM   #3
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

Just a little heads up turbo, If you go with a turbo input splined shaft in your P/G you have to make sure the converter is set up to support the shaft or the stator support itself is set up to support the shaft. Not sure if your aware of this so I thought I'd throw it out there.
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Old 11-15-2011, 08:20 PM   #4
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

So just because a trans is advertised as "having a turbo splined input shaft" does'nt mean you can throw a converter out of a TH400 in it correct?
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Old 11-16-2011, 11:24 AM   #5
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

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Originally Posted by slow8.0 View Post
So just because a trans is advertised as "having a turbo spline input shaft" doesn't mean you can throw a converter out of a TH400 in it correct?
Depends, If the stator support is set up to support the shaft...yes. If not then the converter has to be set up with the support. There are different designs and combinations so you have to have all your ducks in a row sort of speak.
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Old 11-16-2011, 01:12 PM   #6
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

Yes the glide has a bushing in it,the only thing we changed was the trans,th400 to a powerglide turbo input shaft w/bushing.i was not sure if anything would change because the converter was built for a th400 trans.
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Old 11-16-2011, 01:27 PM   #7
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

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Yes the glide has a bushing in it,the only thing we changed was the trans,th400 to a powerglide turbo input shaft w/bushing.i was not sure if anything would change because the converter was built for a th400 trans.
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Old 11-16-2011, 02:42 PM   #8
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

I was just about to post a similar question...I rebuilt my PG and used a new stator and input shaft set up for the TH converters. After assembling, I had the extra bushing as I was told if the bushing ins't in the converter, you will need to install this. Is the bushing being installed in the converter that obvious? Will I know just by looking? I was told installing both would be as big a no-no as not installing either of them. Can someone describe what the bushing looks like in the converter? I know...stupid questions to some of you, but this is my first PG.
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Old 11-16-2011, 04:36 PM   #9
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

If the input shaft is designed to run with a bushing I use them weather the converter has the support in it or not and have never had an issue with it. If you know the manufacture of the converter and have a part # the manufacture should be able to tell you if it has one. If you are pulling this converter out of a th350 or 400 and just putting it in your powerglide chances are it doesn't have the support in the converter. Hope this helps.
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Old 11-16-2011, 04:56 PM   #10
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

Any 30 spline if the bushing was installed into the stator support will work, most aftermarket converters use a bushing anyway because it is better to hold a shaft at both ends than at one end and the center. True stall will not change at all, depending on ratio the footbrake stall may vary a little bit.
Alan
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Old 11-16-2011, 06:25 PM   #11
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

Hutch what do you think
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Old 11-16-2011, 07:59 PM   #12
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

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Originally Posted by jmwj03 View Post
Is the bushing being installed in the converter that obvious? Will I know just by looking?
X2, I just used my th350 converter in a glide with the turbo spline shaft a did not know anything about a bushing, FTI converter.
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Old 11-16-2011, 08:00 PM   #13
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

What will happen if the trans doesnt have the (support)bushing installed?
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Old 11-16-2011, 08:01 PM   #14
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

Other than all the support bushing information that is most important , the stall will increase slightly but it won't be much. Maybe 150-250 rpm higher in low gear and the same shift drop on the 1-2 as the 2-3 of the T400
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Old 11-16-2011, 08:04 PM   #15
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Default Re: TH400 CONVERTER INTO A POWERGLIDE

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Originally Posted by slow8.0 View Post
What will happen if the trans doesnt have the (support)bushing installed?
If the converter has one then you are alright. If neither has one it will make a mess and there are also input shafts that require a bushing just for oil circuit completion. Many input shafts have no provision for a bushing so it can ONLY be installed in the converter.
Most all good converters have a bushing installed regardless of transmission using a "turbo" shaft.


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