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

94 lt1 flywheel

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Old Feb 27, 2012 | 08:42 PM
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Lee robb's Avatar
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From: stl mo
Default 94 lt1 flywheel

I have a 94 trans am with a lt1. I bought a 400 turbo set up off of a Ls1 car. Put it in my car and found that the torque convertor dosent line up with flex plate holes. any suggestions? Do i need to buy another convertor or flex plate. If i change flex plate do i have to buy a new starter. Any help would be appreciated.
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Old Feb 28, 2012 | 10:33 AM
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just a guess, as i have never done the swap personally, you need a new torque converter, unless someone makes a flex plate specifically for that swap. the flax plate would be way cheaper, so its worth a search. your better off asking in the tranny section IMO
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Old Feb 28, 2012 | 10:38 AM
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Lee, Welcome to the Forum! You'll probably get more answers in the automatic trans section.
https://ls1tech.com/forums/automatic-transmission-13/
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Old Feb 28, 2012 | 12:57 PM
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A TH400 uses a 168 tooth flexplate, and yes you will need an aftermarket starter.
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Old Feb 28, 2012 | 07:11 PM
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From: stl mo
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Thank you for info. Called local tranny shop and convertor shop, both told me to drill new holes on flywheel. Flywheel had 3 pads that where drilled and 3 pads that where not drilled. Drilled new holes on flats and it worked perfectly. Glad i didnt have to buy another convertor...
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