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stock style flexplate for 400?

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Old 05-17-2009, 08:54 PM
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Default stock style flexplate for 400?

I am going to be upgrading to a TH400. Will the stock style 3 mounting lug flexplate work with a TH400 or is there a special TH400 flexplate you have to get that works with the LS1?
Thanks
Old 05-17-2009, 09:07 PM
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You can use a flexplate out of an hd2500 with a 6.0. It already has the crank hub pilot.
Old 05-20-2009, 10:32 PM
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Chris at Circle D built the front of my converter and lugs to fit perfectly up to a OEM/ aftermarket flexplate, without using any adapters. Cat Power makes a heavy duty flexplate that I bought off their website for $68 shipped. He built the back of the converter to obviously fit a T400.
Old 05-20-2009, 10:39 PM
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Originally Posted by bigdsz
Chris at Circle D built the front of my converter and lugs to fit perfectly up to a OEM/ aftermarket flexplate, without using any adapters. Cat Power makes a heavy duty flexplate that I bought off their website for $68 shipped. He built the back of the converter to obviously fit a T400.
Yeah, I actually ordered my Converter from Chris also and he is doing the same thing for me. I am gonna pick up the Cat flexplate also. What ARP flexplate bolts do I need to put the new Cat flexplate on with?

On this page it is the FP-346 flexplate right?

http://www.catpep.com/searchengine/s...4&enginetype=4
Old 05-21-2009, 12:01 AM
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Chris sends 10.9 [grade 8] bolts with the converter, along with some blue locktite, I a fan of red. I was gonna use arp flexplate to crank bolts but the best price I could find was Thunder Racing $21 plus $11 shipping. My whole engine is arp but they lost me this go round. I figure if Chris can use 2 10.9 to the converter then I can use 6 10.9 to the crank.




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