LT1-LT4 Modifications 1993-97 Gen II Small Block V8

HP issue?

Thread Tools
 
Search this Thread
 
Old 07-29-2010, 09:28 AM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (13)
 
jasonz28camaro's Avatar
 
Join Date: Sep 2006
Location: Houston
Posts: 593
Received 7 Likes on 7 Posts

Default HP issue?

i just got my LE2 HCI installed on my car and it only put down 297 RWHP on the dyno????? i did about 70% of the work and let someone else finish it off bc i work out of town a lot. the guy that tuned it is named chuck, a very well known guy. we hooked up a tech II to the car and found out that #1 and #5 cylinders were missing bad. with those two cylinders missing could that be where all my hp is? also the people that finished the car set the rollers at 0 lash and did 1 full turn on all the valves, is that too much, could that be where my hp is too? other than the missing the car seams to run good and i have new msd wires and ngk spark plugs that are on the way to see what happens.
Old 07-29-2010, 09:35 AM
  #2  
TECH Fanatic
iTrader: (6)
 
marc97taws6's Avatar
 
Join Date: Sep 2008
Location: DSM
Posts: 1,433
Likes: 0
Received 0 Likes on 0 Posts
Default

There are a lot more factors that come into play...

Tell us exactly what all your setup is- bolt ons, fuel system, stalled, etc. etc.
Old 07-29-2010, 09:37 AM
  #3  
TECH Enthusiast
Thread Starter
iTrader: (13)
 
jasonz28camaro's Avatar
 
Join Date: Sep 2006
Location: Houston
Posts: 593
Received 7 Likes on 7 Posts

Default

full bultons no cats, 30lbs, 52mm,3:42 auto, 2500 stall, 1.6rr HCI.
Old 07-29-2010, 09:49 AM
  #4  
TECH Addict
iTrader: (17)
 
djjab57's Avatar
 
Join Date: Jul 2007
Location: Texas
Posts: 2,498
Likes: 0
Received 0 Likes on 0 Posts
Default

I would let Chuck Anders tune my car anytime, Need to find out why your missing on 2 cylinders (i see you are) 297 on a 6 cylinder is basicly what your running
Old 07-29-2010, 10:01 AM
  #5  
TECH Enthusiast
Thread Starter
iTrader: (13)
 
jasonz28camaro's Avatar
 
Join Date: Sep 2006
Location: Houston
Posts: 593
Received 7 Likes on 7 Posts

Default

not bad #'s on a 6 cylinder. the guy that finished my car put thermal wrap on one of my wires and i have not checked it out yet but pritty sure he burnt up the wire. chuck said its not the opti and it is just in the plugs and wires
Old 07-29-2010, 10:48 AM
  #6  
TECH Addict
iTrader: (17)
 
djjab57's Avatar
 
Join Date: Jul 2007
Location: Texas
Posts: 2,498
Likes: 0
Received 0 Likes on 0 Posts
Default

I would definitely check those wires, if there not ran perfect you usually know not long after you get it all back together
Old 07-29-2010, 10:59 AM
  #7  
TECH Enthusiast
Thread Starter
iTrader: (13)
 
jasonz28camaro's Avatar
 
Join Date: Sep 2006
Location: Houston
Posts: 593
Received 7 Likes on 7 Posts

Default

just checked them all on the ds and 2 are burnt up badddd
Old 07-29-2010, 11:37 AM
  #8  
TECH Enthusiast
Thread Starter
iTrader: (13)
 
jasonz28camaro's Avatar
 
Join Date: Sep 2006
Location: Houston
Posts: 593
Received 7 Likes on 7 Posts

Default

does anyone know if one full turn after 0 lash is too much
Old 07-29-2010, 12:26 PM
  #9  
TECH Senior Member
iTrader: (2)
 
RamAir95TA's Avatar
 
Join Date: May 2005
Location: South Jersey
Posts: 9,467
Likes: 0
Received 6 Likes on 6 Posts

Default

Originally Posted by jasonz28camaro
does anyone know if one full turn after 0 lash is too much
Depends on your lifters. For the LS7s (OEM replacement) I had best results at 1/4 TPZL.
Old 07-29-2010, 12:58 PM
  #10  
TECH Enthusiast
Thread Starter
iTrader: (13)
 
jasonz28camaro's Avatar
 
Join Date: Sep 2006
Location: Houston
Posts: 593
Received 7 Likes on 7 Posts

Default

they are ls7 lifters.. how much hp is lost with them being that tight?
Old 07-29-2010, 01:00 PM
  #11  
TECH Senior Member
iTrader: (2)
 
RamAir95TA's Avatar
 
Join Date: May 2005
Location: South Jersey
Posts: 9,467
Likes: 0
Received 6 Likes on 6 Posts

Default

If they are too tight, the valves will hang open and you lose compression. Substantial power loss.
Old 07-29-2010, 01:04 PM
  #12  
TECH Enthusiast
Thread Starter
iTrader: (13)
 
jasonz28camaro's Avatar
 
Join Date: Sep 2006
Location: Houston
Posts: 593
Received 7 Likes on 7 Posts

Default

ok ill back them off 3/4 of a turn
Old 08-02-2010, 11:08 PM
  #13  
TECH Enthusiast
Thread Starter
iTrader: (13)
 
jasonz28camaro's Avatar
 
Join Date: Sep 2006
Location: Houston
Posts: 593
Received 7 Likes on 7 Posts

Default

fixed the plug wires and it did 323rwhp at first and then after the tune it did 360rwhp and 323rwt. it seams kinda low any opinions?




All times are GMT -5. The time now is 10:05 AM.