Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Is there something wrong here??

Thread Tools
 
Search this Thread
 
Old 06-23-2010, 09:50 AM
  #1  
Staging Lane
Thread Starter
 
R_Yates69's Avatar
 
Join Date: Feb 2009
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default Is there something wrong here??

I know I shouldn't be worried about numbers, but this didn't seem to add up...

I have a 1999 Trans Am WS6 6 Speed
I made 377 RWHP with:
Stock LS6 Heads/Cam/Intake
Pacesetter Headers
SLP Lid
Stock Gears
Stock Rear End


I added a 228/232 112+5LSA Cam and a Borla Exhaust, Sub Frame Connectors, Rear Lower Control Arm, Torque Arm.

My RWHP only went to 382 but my torque went up by about 25. (Although I do notice a HUGE difference in response and speed)

Does this make sense or is something fuckt on my car?
Old 06-23-2010, 09:54 AM
  #2  
11 Second Club
iTrader: (18)
 
thunderstruck507's Avatar
 
Join Date: Mar 2008
Location: Northwest AR
Posts: 8,358
Received 26 Likes on 18 Posts

Default

doesn't sound right to me

112+5? what's up with that? where does power peak?
Old 06-23-2010, 10:52 AM
  #3  
TECH Fanatic
iTrader: (1)
 
02*C5's Avatar
 
Join Date: Apr 2009
Location: Az
Posts: 1,707
Received 298 Likes on 209 Posts

Default

There is something way off and why so much advance ground into the cam who gave you that advice on cam advance.
Old 06-23-2010, 11:12 AM
  #4  
11 Second Club
iTrader: (18)
 
thunderstruck507's Avatar
 
Join Date: Mar 2008
Location: Northwest AR
Posts: 8,358
Received 26 Likes on 18 Posts

Default

also more info might help

same dyno? same brand dyno? corrected or uncorrected numbers? what lift on cam?
Old 06-23-2010, 11:32 AM
  #5  
Staging Lane
Thread Starter
 
R_Yates69's Avatar
 
Join Date: Feb 2009
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default

Joe D spec'd my cam.
Same Dyno as last year, pretty sure it's uncorrected.

Cam Specs: Intake Duration @.050= 228
Exhaust Duration @.050= 232
Intake lift= .600
Exhaust lift= .595
LSA= 112
Intake Centerline= 107
Exhaust Centerline= 117
Cam Lobe Family= HR5
Old 06-23-2010, 11:33 AM
  #6  
Staging Lane
Thread Starter
 
R_Yates69's Avatar
 
Join Date: Feb 2009
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default

I'm putting in new Spark PLugs this weekend because I'm pretty sure they are just the regular ones in it, plus I'm puting an air/fuel tac in it and going to do a street tune.
Old 06-23-2010, 11:58 AM
  #7  
11 Second Club
iTrader: (6)
 
Bill'sWS6's Avatar
 
Join Date: Jun 2004
Location: Ann Arbor, MI
Posts: 419
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by R_Yates69
I'm putting in new Spark PLugs this weekend because I'm pretty sure they are just the regular ones in it, plus I'm puting an air/fuel tac in it and going to do a street tune.
You identified the problem in this post, tuning, If it isn't tuned you wouldn't see any gain and in fact could lose power and tq.

Get a good tune and see what happens. My guess is you will be very happy after that is done.

Keep us informed. Good Luck!!!
Old 06-23-2010, 12:06 PM
  #8  
Staging Lane
Thread Starter
 
R_Yates69's Avatar
 
Join Date: Feb 2009
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default

Hey Bill, I did get it tuned, but just on the Dyno, a few 2000-4500rpm pulls than just the WOT... no street tune or anything....will the street tune + spark plugs net me much of a difference?
Old 06-23-2010, 12:11 PM
  #9  
11 Second Club
iTrader: (6)
 
Bill'sWS6's Avatar
 
Join Date: Jun 2004
Location: Ann Arbor, MI
Posts: 419
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by R_Yates69
Hey Bill, I did get it tuned, but just on the Dyno, a few 2000-4500rpm pulls than just the WOT... no street tune or anything....will the street tune + spark plugs net me much of a difference?
Street tuning should pick up some across the board power, especially part throttle. Still doesn't sound right. I have seen some bad tunes that will kill power.

Call Texas Speed and tell them what is going on. They may have some ideas. They have helped me out many times.

Who did the install for you? Maybe someone installed it off a tooth or two?

Good Luck!!!
Old 06-23-2010, 12:18 PM
  #10  
11 Second Club
iTrader: (6)
 
Bill'sWS6's Avatar
 
Join Date: Jun 2004
Location: Ann Arbor, MI
Posts: 419
Likes: 0
Received 0 Likes on 0 Posts

Default

The more I think about, it it may not be to far off. You still have stock heads & the LS6 intake. The heads are going to REALLY restrict your numbers. Even if you put on a used set of decent heads you could pick up a quick 15-20RWHP.

Look on the for sale section and see if you can get a set of 5.3L Stage 2.5 heads from Texas Speed. New they are only like $1,100. So, you should be able to pick up a used set for around $600 - $700.

That should put you at about mid 390-400RWHP.
Old 06-23-2010, 12:18 PM
  #11  
Staging Lane
Thread Starter
 
R_Yates69's Avatar
 
Join Date: Feb 2009
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default

Ahh a mechanic here in Nova Scotia, he is supposidally one of the best around so I couldn't see him ******* up something like that. It runs great, esp after the tune yesterday. I don't feel or see anything wrong with the perfomance, just the numbers seemed a bit low.
Old 06-23-2010, 03:02 PM
  #12  
11 Second Club
iTrader: (29)
 
blue98Z's Avatar
 
Join Date: May 2006
Location: The Bayou State
Posts: 1,933
Likes: 0
Received 1 Like on 1 Post

Default

What type of rear are you running? My cam is close to yours and I put down 385 through a 9". You typically see approximately 13hp difference between it and the 10 bolt. So if that were the case you would be around 395ish which would be about right. Of course if your numbers are uncorrected then that is a factor as well.
Old 06-23-2010, 03:10 PM
  #13  
Banned
iTrader: (1)
 
Paint_It_Black's Avatar
 
Join Date: Aug 2007
Location: Chi-town West Burbs
Posts: 1,044
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Bill'sWS6
The more I think about, it it may not be to far off. You still have stock heads & the LS6 intake. The heads are going to REALLY restrict your numbers. Even if you put on a used set of decent heads you could pick up a quick 15-20RWHP.

Look on the for sale section and see if you can get a set of 5.3L Stage 2.5 heads from Texas Speed. New they are only like $1,100. So, you should be able to pick up a used set for around $600 - $700.

That should put you at about mid 390-400RWHP.
No. Think again. It doesn't sound right for an LS6 long block and a cam.

https://ls1tech.com/forums/dynamomet...k-results.html
Old 06-23-2010, 03:37 PM
  #14  
TECH Fanatic
iTrader: (6)
 
1SLwLS1's Avatar
 
Join Date: Feb 2009
Posts: 1,360
Likes: 0
Received 0 Likes on 0 Posts

Default

Yea, definitely doesn't seem right with those LS6 heads, although advancing the cam does reduce peak, but I wouldn't think THAT much
Old 06-23-2010, 03:45 PM
  #15  
Staging Lane
Thread Starter
 
R_Yates69's Avatar
 
Join Date: Feb 2009
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default

I don't have an LS6 block, just LS6 Heads and Cam.
Old 06-23-2010, 03:47 PM
  #16  
TECH Fanatic
iTrader: (6)
 
1SLwLS1's Avatar
 
Join Date: Feb 2009
Posts: 1,360
Likes: 0
Received 0 Likes on 0 Posts

Default

Technically no, but LS1 and LS6 are relatively the same, as far as power is concerned. I think he was more/less referring to your setup, that you have an LS6 setup, with a cam.
Old 06-23-2010, 04:06 PM
  #17  
TECH Regular
iTrader: (1)
 
intenseblue's Avatar
 
Join Date: Apr 2006
Posts: 442
Likes: 0
Received 0 Likes on 0 Posts

Default

I'd be more than ill if I didn't pick up at least 20-25 horsepower. 5? That's pathetic and something is definately not right. A cam should pick up more horsepower on an LS1 than anything else you can do to one.
Old 06-23-2010, 04:20 PM
  #18  
Staging Lane
Thread Starter
 
R_Yates69's Avatar
 
Join Date: Feb 2009
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default

well I am ill about it lol, but I did notice a big difference with the cam, it put my torque up a lot just not the hp....

Is it possible after the installation of new NGK plugs (cause i think i still have stock ones) and a wide band(air fuel) gauge plus a street tune will help bump my numbers up more?
Old 06-23-2010, 05:18 PM
  #19  
Staging Lane
Thread Starter
 
R_Yates69's Avatar
 
Join Date: Feb 2009
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default

So can someone tell me what they think is wrong. and if the new spark plugs + air fuel gauge + street tune will = recovery of lost hp
Old 06-23-2010, 08:32 PM
  #20  
TECH Regular
iTrader: (1)
 
intenseblue's Avatar
 
Join Date: Apr 2006
Posts: 442
Likes: 0
Received 0 Likes on 0 Posts

Default

How far is it pulling in the rev range?



All times are GMT -5. The time now is 08:05 PM.