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C5 LS1 Flex Plate Question

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Old Mar 24, 2023 | 11:54 AM
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Default C5 LS1 Flex Plate Question

Just picked up a 2004 LS1 drop out motor from a C5 w/4L60e tranny to use for an LS swap into a G Body. My previous C5 had a manual transmission, which I replaced the clutch on previously so I'm familiar with that. But on the back of the drop out LS1 that was an auto car, the flex plate has another steel plate added to it. Is this steel plate required because it mates up to the tq tube first? Can I take off the metal plate and reuse the C5 flex plate mated to a 4L60e an Fbody?
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Old Mar 24, 2023 | 01:24 PM
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Originally Posted by Shinobi'sZ
Just picked up a 2004 LS1 drop out motor from a C5 w/4L60e tranny to use for an LS swap into a G Body. My previous C5 had a manual transmission, which I replaced the clutch on previously so I'm familiar with that. But on the back of the drop out LS1 that was an auto car, the flex plate has another steel plate added to it. Is this steel plate required because it mates up to the tq tube first? Can I take off the metal plate and reuse the C5 flex plate mated to a 4L60e an Fbody?
Thanks
It has been awhile......I'll go out on the proverbial limb and say that is the way they are. If I'm wrong, I can guarantee someone will add a corrected post!!!
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Old Mar 25, 2023 | 11:57 AM
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Originally Posted by grinder11
It has been awhile......I'll go out on the proverbial limb and say that is the way they are. If I'm wrong, I can guarantee someone will add a corrected post!!!
Looks like this part is called a flexplate coupler that attaches to the back of the crankshaft, and then there is the flexplate that is in the rear connected to the tq converter (like normal), I was contemplating separating the coupler from the flexplate, because it just looks like a flexplate, but I will probably just order a new flexplate that attaches to the tq converter and crankshaft in a traditional way.
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Old Mar 25, 2023 | 10:04 PM
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Although there’s a couple of pieces missing, it’s meant for coupling to the driveshaft. You will just need a standard flexplate.
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Old Mar 27, 2023 | 11:58 AM
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Originally Posted by vette4fl
Although there’s a couple of pieces missing, it’s meant for coupling to the driveshaft. You will just need a standard flexplate.
Thanks!
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