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LS engine with th400 flexplate?

Old Dec 9, 2012 | 07:38 PM
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Default LS engine with th400 flexplate?

which one to get for my setup?

part numbers would be great and or links!

hub adapter as well?

thanks
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Old Dec 9, 2012 | 08:07 PM
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http://www.summitracing.com/parts/hup-hp3795 hope this helps you should be ok with the factory flex plate from what I understand. Some one correct me if I'm wrong.
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Old Dec 9, 2012 | 08:50 PM
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Look up the parts for this offered by Hughes Transmissions.
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Old Dec 9, 2012 | 10:29 PM
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LS flexplate but you need to use a spacer like shown above....if you have a flat LS flexplate you need a different spacer that bolts to the crank then you bolt the fp to it but if you have the dished LS fp you can use the one above from hughes, it goes between the the fp and the tc
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Old Dec 9, 2012 | 10:33 PM
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Here's a thread about it....

https://ls1tech.com/forums/conversio...uto-trans.html
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Old Dec 9, 2012 | 10:55 PM
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I used a hughes performance HP4004X dished flexplate with the GM spacer. Worked great. Hope this helps. Eric L
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Old Dec 10, 2012 | 09:06 AM
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Prorac1-= you have part numbers?

I dont have a flexplate right now so any will do. I will need to find a stocker if it works and the whatever adapter for that FP...
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Old Dec 10, 2012 | 04:31 PM
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From: Martin Mi
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Yeah, HP4004X. Eric L
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Old Dec 10, 2012 | 04:41 PM
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so that will work with all ls1 and 5.3L engines to adapt a th400 with out the use of a extra spacer correct?
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Old Dec 10, 2012 | 05:10 PM
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Their are a few different options. Give us a call or PM and we will get you fixed up!
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Old Dec 10, 2012 | 07:49 PM
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I did the TCI plate on my LS/TH350 combo....

P/N 399753

SFI rated.
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Old Dec 11, 2012 | 12:51 PM
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Originally Posted by Doug G
I did the TCI plate on my LS/TH350 combo....

P/N 399753

SFI rated.
Same one I went with. And I had a converter from Lenny at Ultimate Converter Concepts which was built for a LS1 engine and th400 trans so I didn't need any spacer or anything.
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Old Dec 11, 2012 | 07:20 PM
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From: Martin Mi
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You will have to use the GM spacer with the flexplate. And yes it should work with any LS bolting to a TH trans. Watch out for the early motors with the extended crank. And its SFI approved. IIRC it cost me around $140. Eric L
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