LT1-LT4 Modifications 1993-97 Gen II Small Block V8

TH350 swap

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Old Dec 4, 2006 | 11:03 AM
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Default TH350 swap

i am pretty sure my tranny is slipping i was wondering how hard would it be to put in a TH350 or 400 what all do i need to do a good writeup would be great
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Old Dec 4, 2006 | 11:09 AM
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You'll need:
-to buy the 3rd gen install kit (for the torque arm)
-do some fabrication to your crossmember
-unless you get the th350 with the longer tail shaft, you'll need a driveshaft
-figure out how to run your speedometer
-get a tb and bracket from a 93 LT1 so you can run the kick down cable
-buy a torque converter
-have your PCM A4 DTC's turned off

I'm sure I'm missing stuff, also.
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Old Dec 4, 2006 | 11:38 AM
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so would it be easy to just rebuild my 4l60e
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Old Dec 4, 2006 | 11:40 AM
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my car seems to only move if i have the shifter in the 3 postion and my car seems to bog in 4th so could it be something other then my tranny like my torque converter
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Old Dec 4, 2006 | 11:44 AM
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Originally Posted by chameleongreen97ta
my car seems to only move if i have the shifter in the 3 postion and my car seems to bog in 4th so could it be something other then my tranny like my torque converter
By move, do you mean just taking off or it's faster with it in the D position? Also, what exactly are you talking about with it seeming to 'bog in 4th'? What does it do? Just not go anywhere when you give it gas?
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Old Dec 4, 2006 | 11:48 AM
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yeah when i take off regular and bog like it slips but not slips so seems like it bogs and when i go up hills with it in D then it slips but not when i have it on 3
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Old Dec 4, 2006 | 11:48 AM
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yeah D does not to seem to work at all at any speed anything
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Old Dec 4, 2006 | 01:24 PM
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Originally Posted by chameleongreen97ta
yeah when i take off regular and bog like it slips but not slips so seems like it bogs and when i go up hills with it in D then it slips but not when i have it on 3
Dude, you lost me at 'yeah...'. If you're pushing the gas and the car isn't wanting to move, then the transmission is probably shot.
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Old Dec 4, 2006 | 01:51 PM
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Decide what Torq Arm you are going to use. Then you can decide on other options. I like using the 9" tail shafts on the TH350 so you can re-use the stock DS.

It does not have to be an expensive swap, just make sure you get a GOOD TC so all the effort will be worth it.

I do not run kick down cables. Speedo will be tricky but workable.
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