The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > Info Center > FAQ Truck Tech > Engine and Drivetrain > LSx Related

Web 67-72chevytrucks.com


Closed Thread
 
Thread Tools Display Modes
Old 03-28-2011, 01:54 AM   #1
softballnrd27
Always a work in progress
 
softballnrd27's Avatar
 
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
6.0l LQ4 to old school tranny

I want to make sure I have this right:
2004 LQ4(not sure what trans was behind it, I forgot to ask) I am posting a pic so that maybe it will help with what I need to know:

I need to adapt my th350 to the 6.0 If it did in fact come with a 4l80e then I should be good as far as spacer and bolts correct? If not then I need to get the spacer and bolts correct? Then I need the flat flexplate and drill holes for the th350 TC? When I go to mark the holes in order to drill new ones, does it matter where on the flexpalte they are drilled? Should there be a certain distance from the factory holes?
__________________
USMC Retired
Never trust a man who can't laugh at his own fart!
2010 Silverado Crew Cab
73 SWB 5.3/4l80e
Build Thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=695168
softballnrd27 is offline  
Old 03-28-2011, 03:56 AM   #2
softballnrd27
Always a work in progress
 
softballnrd27's Avatar
 
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
Re: 6.0l LQ4 to old school tranny

For the VSS will this one work with the stock computer? I am going to run Autometer procomp gauges and this is the recommended one for GM.
http://www.summitracing.com/parts/ATM-5291/
__________________
USMC Retired
Never trust a man who can't laugh at his own fart!
2010 Silverado Crew Cab
73 SWB 5.3/4l80e
Build Thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=695168
softballnrd27 is offline  
Old 03-28-2011, 09:25 AM   #3
Shon
Registered User
 
Join Date: Sep 2005
Location: sc
Posts: 1,203
Re: 6.0l LQ4 to old school tranny

Need to determine what flexplate is on the motor. if it has a spacer already then you will just have to drill holes for the TC. If it doesnt have a spacer then you will want a crank spacer.

link to just the spacer pictured above

If you want all new stuff I ship these out:
TCI Flexplate and spacer
__________________
71 Cheyenne C10 LWB cam'd 6.0/T56 Swap
Shon is offline  
Old 03-28-2011, 03:42 PM   #4
shortbed70
Registered User
 
shortbed70's Avatar
 
Join Date: Mar 2002
Location: Forney TX
Posts: 4,512
Re: 6.0l LQ4 to old school tranny

Do these flexplates work with 700's and th 400's also?
Posted via Mobile Device
__________________
Troy

1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb

my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884

Big Red Dog build
http://67-72chevytrucks.com/vboard/s...d.php?t=572274
shortbed70 is offline  
Old 03-28-2011, 03:45 PM   #5
Shon
Registered User
 
Join Date: Sep 2005
Location: sc
Posts: 1,203
Re: 6.0l LQ4 to old school tranny

We use them on TH350/400s and I dont see why they would not work with a 700R4, the bolt pattern for the TC is the same.
__________________
71 Cheyenne C10 LWB cam'd 6.0/T56 Swap
Shon is offline  
Old 03-29-2011, 10:53 AM   #6
jkade
Senior Member
 
jkade's Avatar
 
Join Date: Nov 2005
Location: AL
Posts: 2,519
Re: 6.0l LQ4 to old school tranny

http://www.gmpartsdirect.com/

GM PART # 12621399 $44.42

That has the flexplate, spacer, and bolts. All you will have to do is do a little grinding with a die grinder on the new flexplate to match you converter. The bolt holes are close but you have to open them up a little. Working fine on my LQ9/th400 and you won't beat the price!!!

You can see here what I am talking about.




Last edited by augie; 05-21-2011 at 12:55 AM.
jkade is offline  
Old 03-29-2011, 02:43 PM   #7
67shortie
Green club
 
67shortie's Avatar
 
Join Date: May 2002
Location: Central CA
Posts: 1,059
Re: 6.0l LQ4 to old school tranny

My engine came off of a 4L80 so the flexplate had the correct adapter already there so all I had to do is elongate the converter holes to mount the 700 to it.
__________________
71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears
70 SS396 Chevelle 427/200-4R/3.73posi
61 Lincoln Continental, black on black

Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln
67shortie is offline  
Old 03-29-2011, 03:08 PM   #8
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 6.0l LQ4 to old school tranny

Quote:
Originally Posted by 67shortie View Post
My engine came off of a 4L80 so the flexplate had the correct adapter already there so all I had to do is elongate the converter holes to mount the 700 to it.
You should not have to mess with the converter bolt holes on a "4L80E" flexplate

Quote:
Originally Posted by jkade View Post
GM PART # 12621399 $44.42

That has the flexplate, spacer, and bolts. All you will have to do is do a little grinding with a die grinder on the new flexplate to match you converter. The bolt holes are close but you have to open them up a little. Working fine on my LQ9/th400 and you won't beat the price!!!
Is that what you got from GM parts direct? If so, Its wrong, Looks like a 4L60E flexplate. It should look like this, Notice the 6 converter bolt holes.
Attached Images
 
clinebarger is offline  
Old 04-01-2011, 03:49 PM   #9
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 6.0l LQ4 to old school tranny

I was wrong, You do have to open up the holes a little, I dont know why GM would change that on the 4L80E from the early ones.
clinebarger is offline  
Old 04-04-2011, 11:04 AM   #10
jkade
Senior Member
 
jkade's Avatar
 
Join Date: Nov 2005
Location: AL
Posts: 2,519
Re: 6.0l LQ4 to old school tranny

Quote:
Originally Posted by clinebarger View Post
You should not have to mess with the converter bolt holes on a "4L80E" flexplate



Is that what you got from GM parts direct? If so, Its wrong, Looks like a 4L60E flexplate. It should look like this, Notice the 6 converter bolt holes.
That was a flexplate I had laying around just to see how far the holes were off. I used the one in the kit. The one in the pic will work as it was a dished plate as well but I did not have the spacer.
jkade is offline  
Old 04-04-2011, 11:06 AM   #11
jkade
Senior Member
 
jkade's Avatar
 
Join Date: Nov 2005
Location: AL
Posts: 2,519
Re: 6.0l LQ4 to old school tranny

Quote:
Originally Posted by clinebarger View Post
I was wrong, You do have to open up the holes a little, I dont know why GM would change that on the 4L80E from the early ones.
The 6 bolt converter for the 6.2 matched the holes perfect.
jkade is offline  
Closed Thread

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:52 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com