Notices
GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

Need Good Info on the 6.2/ 6speed

Thread Tools
 
Search this Thread
 
Old 03-30-2013, 04:58 PM
  #11  
Admin
iTrader: (22)
 
03sierraslt's Avatar
 
Join Date: Jul 2004
Location: Western PA
Posts: 19,004
Received 217 Likes on 173 Posts
Default

Not sure what boost you will shoot for Tim but I would run a 76-78mm min.
Old 03-30-2013, 05:39 PM
  #12  
11 sec. Truck Mod
Thread Starter
iTrader: (12)
 
TIM Z's Avatar
 
Join Date: Dec 2005
Location: OH IO :(
Posts: 9,736
Likes: 0
Received 4 Likes on 4 Posts
Default

Originally Posted by 1slow01Z71
Ill meet you halfway

Remember the Denalis only come with 3.42s, if you get one of the 09+ NHT trucks you can get them with 3.73s which will help a TON with towing. 5th gear all day long with 3.73s ought to do just fine towing most anything.

Most of the guys who have popped their 6.2s were due to tuning problems. There are way too many people putting down 600+ rwhp for a long time for it to be anything but a tuning issue.
Well cool then tuning won't be an issue , that sucks they don't come with 3.73s , my fav ratio .
Originally Posted by 03sierraslt
Not sure what boost you will shoot for Tim but I would run a 76-78mm min.
Yeah that sounds like it would be about perfect , if I did it would be 5-7psi for towing/DD power , max at 10 on high .

I dont know what I wanna do yet , but def wanted to get your guys' opinions on the 6.2s as I am not too familiar with them , but sounds like they will be fine with my plans if I choose to get one , I can't get these new CCs out of my mind .
Old 03-30-2013, 06:01 PM
  #13  
hog
TECH Fanatic
 
hog's Avatar
 
Join Date: Oct 2005
Location: Woodstock Ontario Canada
Posts: 1,379
Likes: 0
Received 0 Likes on 0 Posts
Default

The LSA has its own block, as does the LS9 which are both different than the L92/LS3/L99 blocks. Theres not much different between the N/A 6.2's so far as reliability under power.

The LSA has its own block, as does the LS9 which are both different than the L92/LS3/L99 blocks. Theres not much different between the N/A 6.2's so far as reliability under power.
Durability wont be any worse than the GEN 3 engines, as they are structurally pretty much identical between the GEN 3 and GEN 4 family.

The 6 speed trans requires exact tuning to survive.

peace
Hog

peace
Hog
Old 03-30-2013, 06:39 PM
  #14  
Admin
iTrader: (22)
 
03sierraslt's Avatar
 
Join Date: Jul 2004
Location: Western PA
Posts: 19,004
Received 217 Likes on 173 Posts
Default

Originally Posted by hog
The LSA has its own block, as does the LS9 which are both different than the L92/LS3/L99 blocks. Theres not much different between the N/A 6.2's so far as reliability under power.

The LSA has its own block, as does the LS9 which are both different than the L92/LS3/L99 blocks. Theres not much different between the N/A 6.2's so far as reliability under power.
Durability wont be any worse than the GEN 3 engines, as they are structurally pretty much identical between the GEN 3 and GEN 4 family.

The 6 speed trans requires exact tuning to survive.

peace
Hog

peace
Hog

Hmmm...double post within a single post, that's new. Lol
Old 03-30-2013, 07:14 PM
  #15  
11 sec. Truck Mod
Thread Starter
iTrader: (12)
 
TIM Z's Avatar
 
Join Date: Dec 2005
Location: OH IO :(
Posts: 9,736
Likes: 0
Received 4 Likes on 4 Posts
Default

Cool thanks for the info Hog , you don't post much but when you do it's informative

So what is the comp. ratio of the 6.2 ?
Old 03-30-2013, 07:45 PM
  #16  
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
1slow01Z71's Avatar
 
Join Date: Oct 2004
Location: Austin, TX
Posts: 23,204
Likes: 0
Received 4 Likes on 4 Posts
Default

10.5:1

Since youve got TJ who can do the tuning for you I wouldnt be worried at all. Those guys were pushing crazy numbers on stock longblocks before anyone else. A large wastegate and quality intercooler are going to be key to that motor living while towing boosted.

Like hog said, the 6 speeds are very finicky about tuning to live behind some horsepower. Area47 seems to be one of the few who actually understand all the tables for tuning them. Also there is 6L80e.com which is a forum that you have to pay to access but supposedly its really good and the admin of the site will help you with any specific problems you have with tuning the trans.
Old 03-30-2013, 07:53 PM
  #17  
11 sec. Truck Mod
Thread Starter
iTrader: (12)
 
TIM Z's Avatar
 
Join Date: Dec 2005
Location: OH IO :(
Posts: 9,736
Likes: 0
Received 4 Likes on 4 Posts
Default

Originally Posted by 1slow01Z71
10.5:1

Since youve got TJ who can do the tuning for you I wouldnt be worried at all. Those guys were pushing crazy numbers on stock longblocks before anyone else. A large wastegate and quality intercooler are going to be key to that motor living while towing boosted.

Like hog said, the 6 speeds are very finicky about tuning to live behind some horsepower. Area47 seems to be one of the few who actually understand all the tables for tuning them. Also there is 6L80e.com which is a forum that you have to pay to access but supposedly its really good and the admin of the site will help you with any specific problems you have with tuning the trans.
Whoa cool info Cody thanks bro !

Yeah I don't worry bout my tuning with my bud TJ taking care of it ,) Pats a good help too .

Now decisions decisions
Old 04-01-2013, 10:45 AM
  #18  
TECH Fanatic
 
Area47's Avatar
 
Join Date: Jul 2006
Location: K.C.
Posts: 1,737
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by 1slow01Z71
10.5:1

Since youve got TJ who can do the tuning for you I wouldnt be worried at all. Those guys were pushing crazy numbers on stock longblocks before anyone else. A large wastegate and quality intercooler are going to be key to that motor living while towing boosted.

Like hog said, the 6 speeds are very finicky about tuning to live behind some horsepower. Area47 seems to be one of the few who actually understand all the tables for tuning them. Also there is 6L80e.com which is a forum that you have to pay to access but supposedly its really good and the admin of the site will help you with any specific problems you have with tuning the trans.
im magical!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
DrX
FORCED INDUCTION
31
08-19-2015 04:45 PM
lawhitediamante
INTERNAL ENGINE MODIFICATIONS
5
08-12-2015 12:14 PM
05GMC4.8
GMT 900 Trucks General Discussion
5
08-07-2015 09:55 PM
gtyler04
Trucks and SUV Classifieds
0
07-28-2015 06:21 PM
Cowboy Tom
GM Drivetrain & Suspension
11
07-21-2015 10:29 PM



Quick Reply: Need Good Info on the 6.2/ 6speed



All times are GMT -5. The time now is 02:27 PM.