Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

WHAT TCI part # for turbo400 tranny?

Thread Tools
 
Search this Thread
 
Old 04-11-2010, 08:47 PM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (43)
 
99Ws6TransAm's Avatar
 
Join Date: May 2004
Posts: 547
Likes: 0
Received 0 Likes on 0 Posts

Default WHAT TCI part # for turbo400 tranny?

Ive noticed a few different part #'s for the tci flexplates. What one bolts up properly to a turbo400 being matted to an ls1?
Old 04-11-2010, 11:02 PM
  #2  
TECH Enthusiast
iTrader: (12)
 
BlwnLs1GTO's Avatar
 
Join Date: Mar 2006
Posts: 577
Likes: 0
Received 8 Likes on 8 Posts

Default

The part number you need is 399753.

They offer another LS flexplate however, it is ONLY for the 4L80e. This number is 399754.
Old 04-12-2010, 09:49 AM
  #3  
10 Second Club
iTrader: (1)
 
CAMARO_THUNDER's Avatar
 
Join Date: Aug 2003
Location: 77531
Posts: 85
Likes: 0
Received 0 Likes on 0 Posts

Default

YOU NEED THE 399754, it fits 400/4l80e just installed one on my car.
Old 04-12-2010, 02:04 PM
  #4  
TECH Enthusiast
iTrader: (12)
 
BlwnLs1GTO's Avatar
 
Join Date: Mar 2006
Posts: 577
Likes: 0
Received 8 Likes on 8 Posts

Default

Sorry, I'm assuming you're going to be using a custom converter for this swap. I forgot that mine was built for an LS engine and I had to return the #754 for the #753. If you're using the old 400 converter with the short pilot, you will need the 399754 that comes with a spacer for the crankshaft. As well as the old GM big bolt pattern on this particular flexplate.

If your converter was built for the LS swap, it will most likely have an LS1 bolt pattern with an extended pilot shaft. This is where the 399753 comes in. Just confirm with whoever built it.

Here are some bolt patterns in case you need them.
TH350& LT1 10.750"
LS1 11.080"
TH400/4L80 - 11.500"
Old 04-12-2010, 06:58 PM
  #5  
TECH Enthusiast
Thread Starter
iTrader: (43)
 
99Ws6TransAm's Avatar
 
Join Date: May 2004
Posts: 547
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by BlwnLs1GTO
Sorry, I'm assuming you're going to be using a custom converter for this swap. I forgot that mine was built for an LS engine and I had to return the #754 for the #753. If you're using the old 400 converter with the short pilot, you will need the 399754 that comes with a spacer for the crankshaft. As well as the old GM big bolt pattern on this particular flexplate.

If your converter was built for the LS swap, it will most likely have an LS1 bolt pattern with an extended pilot shaft. This is where the 399753 comes in. Just confirm with whoever built it.

Here are some bolt patterns in case you need them.
TH350& LT1 10.750"
LS1 11.080"
TH400/4L80 - 11.500"

Im running a PCT converter. I dont have any type or shims in it at all. Just bolted it on. No spacers or anything. Im assuming this is what you mean by being built for the swap. SO i should be ok ordering up the 399753.



Quick Reply: WHAT TCI part # for turbo400 tranny?



All times are GMT -5. The time now is 01:40 AM.