PerformanceTrucks.net Forums

FORCED INDUCTION Turbos | Superchargers | Intercoolers | H2O/Meth Injection

Gen III LM7 Limit

Thread Tools
 
Search this Thread
 
Old 06-25-2013, 02:31 PM
  #1  
TECH Senior Member
Thread Starter
iTrader: (59)
 
Ferocity02's Avatar
 
Join Date: Apr 2003
Posts: 9,447
Likes: 0
Received 2 Likes on 2 Posts
Default Gen III LM7 Limit
How much power (or boost/timing) have you gotten out of your stock gen III 5.3L LM7 bottom ends? Just curious if I should start looking into a gen IV short block or other stronger options now
Last edited by Ferocity02; 06-25-2013 at 02:39 PM.
Ferocity02 is offline  
Reply Like
Old 06-25-2013, 02:49 PM
  #2  
Slowest turbo build ever!
iTrader: (2)
 
black00chev's Avatar
 
Join Date: Dec 2009
Location: Warrenton, VA
Posts: 2,905
Received 1 Like on 1 Post
Default
it all honestly depends what youre doing with the truck. are you racing every weekend at the track where its gonna see WOT full boost, or you just DDing with the occasional spirited take off from a light?
black00chev is offline  
Reply Like
Old 06-25-2013, 02:51 PM
  #3  
TECH Senior Member
Thread Starter
iTrader: (59)
 
Ferocity02's Avatar
 
Join Date: Apr 2003
Posts: 9,447
Likes: 0
Received 2 Likes on 2 Posts
Default
Originally Posted by black00chev
it all honestly depends what youre doing with the truck. are you racing every weekend at the track where its gonna see WOT full boost, or you just DDing with the occasional spirited take off from a light?
It's a DD street truck, it will never see the track. I get into boost maybe 5-8 times a day and usually for only a second or two each time.
Ferocity02 is offline  
Reply Like
Old 06-25-2013, 03:01 PM
  #4  
TECH Addict
iTrader: (7)
 
Chevy_King1500's Avatar
 
Join Date: Mar 2011
Location: Jasper, IN
Posts: 2,072
Likes: 0
Received 2 Likes on 2 Posts
Default
sprayeddenali was throwing 20+ with his twin setup
Chevy_King1500 is offline  
Reply Like
Old 06-25-2013, 06:41 PM
  #5  
TECH Fanatic
iTrader: (2)
 
Join Date: Oct 2006
Location: slidell, LA
Posts: 1,118
Likes: 0
Received 0 Likes on 0 Posts
Default
15 psi for a while now with a 80mm and its holding up fine. I have plans for 20+ psi when I get it back on the road/track
o2camaross is offline  
Reply Like
Old 06-25-2013, 07:00 PM
  #6  
Baltimore Whore
iTrader: (95)
 
Mangled03gmc's Avatar
 
Join Date: Apr 2004
Location: In a van DOWN BY THE RIVER
Posts: 16,820
Likes: 0
Received 2 Likes on 2 Posts
Default
You ask ALOT of questions LOL
Mangled03gmc is offline  
Reply Like
Old 06-25-2013, 07:49 PM
  #7  
TECH Fanatic
iTrader: (38)
 
Join Date: Oct 2005
Location: cedar bluff,alabama
Posts: 1,299
Likes: 0
Received 2 Likes on 2 Posts
Default
Find the limit of YOUR motor and let us know... timing and boost of course. With a good tune I don't see why it wouldn't last a year or 2 at 700 plus rear wheel. Rinse and repeat
1969x11 is offline  
Reply Like

Trending Topics

Old 06-25-2013, 08:45 PM
  #8  
Slowest turbo build ever!
iTrader: (2)
 
black00chev's Avatar
 
Join Date: Dec 2009
Location: Warrenton, VA
Posts: 2,905
Received 1 Like on 1 Post
Default
I your DDing and barely getting into boost, I don't see why you cant max that 76mm out from time to time.
black00chev is offline  
Reply Like
Old 06-26-2013, 01:25 AM
  #9  
8 Second Truck Club
iTrader: (32)
 
Blown06's Avatar
 
Join Date: Apr 2006
Posts: 5,662
Received 39 Likes on 31 Posts
Default
lol, I remember my stock LM7 lasted 2 days at 450rwph. Stupid tuner...
Blown06 is offline  
Reply Like
Old 06-29-2013, 06:45 PM
  #10  
TECH Senior Member
iTrader: (8)
 
Blackpanther99's Avatar
 
Join Date: Sep 2012
Location: Baytown, TX
Posts: 6,958
Likes: 0
Received 0 Likes on 0 Posts
Default
Horrible ****^^
Blackpanther99 is offline  
Reply Like



Advanced Search
Quick Reply: Gen III LM7 Limit


Reply Closed Thread Share

All times are GMT -5. The time now is 07:14 AM.