TCI flexplate Q....4L80 application
#1
TCI flexplate Q....4L80 application
Hey guys. I read in the sticky that you can use a TCI LS1 flexplate for this swap. I purchased a used TCI flexplate a while ago to use on a TH400 swap that never happened. It is the TCI-399753
TCI flexplate link
Can this flexplate be used for the M6 to 4L80e swap? I am assuming that a converter from Yank, Vigilante or Circle-D that was specifically designed for this swap would work?
Let me know what you guys think. If it won't work, I will sell the one I have and buy a stock flexplate from an A4 car.
Thanks,
Andy
TCI flexplate link
Can this flexplate be used for the M6 to 4L80e swap? I am assuming that a converter from Yank, Vigilante or Circle-D that was specifically designed for this swap would work?
Let me know what you guys think. If it won't work, I will sell the one I have and buy a stock flexplate from an A4 car.
Thanks,
Andy
Last edited by White.Lightning; 10-02-2009 at 05:31 AM.
#5
FormerVendor
iTrader: (21)
Yank is correct. You would need a special LS1/4L80 converter.
TCI also makes a flex-plate for you setup, then you could use a 6 lug 4L80 billet converter and get the ultimate strength.
Here is the link:
http://www.compperformancegroupstore...ct_Code=399754
Chris
TCI also makes a flex-plate for you setup, then you could use a 6 lug 4L80 billet converter and get the ultimate strength.
Here is the link:
http://www.compperformancegroupstore...ct_Code=399754
Chris
#8
FormerVendor
iTrader: (21)
My combo converter is the same price. So that would be the most economical way. The only problem is that it will only fit a LS style with a 4L80. But they are getting more and more common. So resale value would be good as well. The only benefit from getting the 4L80 style would be so you an use all 6 lugs for better strength. But with the SFI and 3 lugs I am sure you are good for 1000+ hp.
Chris
Chris
#9
My combo converter is the same price. So that would be the most economical way. The only problem is that it will only fit a LS style with a 4L80. But they are getting more and more common. So resale value would be good as well. The only benefit from getting the 4L80 style would be so you an use all 6 lugs for better strength. But with the SFI and 3 lugs I am sure you are good for 1000+ hp.
Chris
Chris
I still have time to consider this. I might ponder selling my TCI flexplate to fund the 4L80 TCI flexplate to gain the strength. But like you said, the three lug should be more than enough for my application.
Thanks
#10
FormerVendor
iTrader: (1)
This question is for Dave and Chris. With a billet front cover that basically has two different bolt patterns, can guys use all six bolt holes? Personally if so I think this is a no brainer if the flywheel has two different bolt patterns and it fits. Just a thought from a trans builder. Vince B
#11
FormerVendor
iTrader: (21)
Vince,
Good idea. I agree. I have had a few request for this and plan on making one soon. It would have a LS1 BP and an LT1/TH350 BP. Allow you to take advantage of all 6 on the TCI dual bolt pattern flex-plate. But GM does have 3 different BPs. Easy enough to make, just a slight modification on the CNC.
350/LT1 -10.750"
LS1 - 11.080"
400/4L80 - 11.500"
So it does depend on what dual pattern flex-plate you are using. For most the LS1/LT1 combo is the best.
Chris
Good idea. I agree. I have had a few request for this and plan on making one soon. It would have a LS1 BP and an LT1/TH350 BP. Allow you to take advantage of all 6 on the TCI dual bolt pattern flex-plate. But GM does have 3 different BPs. Easy enough to make, just a slight modification on the CNC.
350/LT1 -10.750"
LS1 - 11.080"
400/4L80 - 11.500"
So it does depend on what dual pattern flex-plate you are using. For most the LS1/LT1 combo is the best.
Chris
#12
This question is for Dave and Chris. With a billet front cover that basically has two different bolt patterns, can guys use all six bolt holes? Personally if so I think this is a no brainer if the flywheel has two different bolt patterns and it fits. Just a thought from a trans builder. Vince B
#14
FormerVendor
iTrader: (21)
I found this on another website - notice the last line......
TCI SFI Approved LS1 Flexplate.
Race safely with TCI's newest addition to our extensive flexplate line. The TCI 399753 flexplate fits 1998 and newer F-bodies with LS1 engine as well as ’99 and newer GM trucks with 4.8L, 5.3L and 6.0L LS based engines.
Notes:
SFI 29.1 approved
Lightweight design for quick engine response
Made in the USA from plasma-cut, Blanchard-ground, billet steel plate
Includes mounting hardware
Dual bolt patterns, stock LS1 and small GM bolt pattern
Chris
TCI SFI Approved LS1 Flexplate.
Race safely with TCI's newest addition to our extensive flexplate line. The TCI 399753 flexplate fits 1998 and newer F-bodies with LS1 engine as well as ’99 and newer GM trucks with 4.8L, 5.3L and 6.0L LS based engines.
Notes:
SFI 29.1 approved
Lightweight design for quick engine response
Made in the USA from plasma-cut, Blanchard-ground, billet steel plate
Includes mounting hardware
Dual bolt patterns, stock LS1 and small GM bolt pattern
Chris
#15
I'm not sure what's wrong