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  #1  
Old 01-12-2022, 03:02 AM
Bad Bowtie Bad Bowtie is online now
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Default LS7 to 4L80E flexplate

Hey Guys,
I'm in the process of helping a friend build his 93 Silverado truck he has an LS7 from a Z06 Vette and behind it will be a 4L80E for transmission. Does anyone know of an alternative to the 4L80E TCI flexplate that will fit with the LS7.
Hard to take the $320.00 pill if there is another option out there.

Thanks

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Old 01-12-2022, 07:25 AM
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Contact Circle D....
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Old 01-12-2022, 10:58 AM
patriot68 patriot68 is online now
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Circle D referred me to TCI when I was looking for one. Had to wait about 6 moonths to get it in mid 2020
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Old 01-12-2022, 01:52 PM
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Here's a couple less expensive options, haven't tried them though.

https://warrperformance.com/product/...6ls7lq9lq4lm4/

OR

https://www.amazon.com/GM-Performanc.../dp/B00TO611K4

plus spacer

https://www.amazon.com/GM-Performanc...0E60SLEM&psc=1
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  #5  
Old 01-12-2022, 06:50 PM
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Understanding flexplates for these LS motors have been all over the map for me. So Jody you advise that I will need a spacer with the flywheel. I have heard of that but thought it was for like 6.0 liter LS w/ 4L60 E. I read where some engines needed the spacer some didn't. I will look into the ones you listed.

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Old 01-18-2022, 10:49 AM
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I ran a GM Performance flex plate with my 4L80E and shredded it during a backfire while cranking. I could not get perfect engagement with this setup.
I bought a TCI flexplate because it such a nice piece but pricy. SFI certified.

Bottom line:
Get a good one.
I didnít and cost me a full engine pull because I tried to save $$$
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