Dynamometer Results & Comparisons Dyno Records | Dyno Discussion | Dyno Wars

LS7 Dyno Numbers

Thread Tools
 
Search this Thread
 
Old Mar 22, 2018 | 10:40 PM
  #1  
Brentoluke's Avatar
Thread Starter
Teching In
 
Joined: Mar 2017
Posts: 16
Likes: 0
Default LS7 Dyno Numbers

Im looking to see if anybody else can tell me if the numbers my car put down are adding up. I had a Ls7 built and put into my 02 WS6. I went with 285 prc heads. Texas speed stage 4.2 cam 248/260 .657/.655 111 LSA. With Holley sniper efi low profile 102mm intake manifold and throttle body. I was thinking it would be any where in the mid 500 to the low 600 range in power but my car only put down 476rwhp/412rwtq. Do these numbers sound right
Reply
Old Mar 23, 2018 | 04:32 AM
  #2  
bigbomber5's Avatar
TECH Resident
 
Joined: Aug 2011
Posts: 828
Likes: 11
From: 4o5
Default

What is your transmission?
Reply
Old Mar 23, 2018 | 10:35 AM
  #3  
Brentoluke's Avatar
Thread Starter
Teching In
 
Joined: Mar 2017
Posts: 16
Likes: 0
Default

Originally Posted by bigbomber5
What is your transmission?
stock t56
Reply
Old Mar 23, 2018 | 02:02 PM
  #4  
Mavn's Avatar
"I MAID THEESE"
10 Year Member
Photogenic
Liked
Loved
iTrader: (3)
 
Joined: Jul 2011
Posts: 2,758
Likes: 701
From: Houston
Default

Something is way wrong... Should make 600-650
Reply
Old Mar 23, 2018 | 02:14 PM
  #5  
Brentoluke's Avatar
Thread Starter
Teching In
 
Joined: Mar 2017
Posts: 16
Likes: 0
Default

Originally Posted by Mavn
Something is way wrong... Should make 600-650
I know it’s not adding up cuz the exhaust isn’t gonna give me the 100rwhp that should be there
Reply
Old Mar 23, 2018 | 02:47 PM
  #6  
Tuskyz28's Avatar
TECH Veteran
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2014
Posts: 4,892
Likes: 703
From: Mississippi
Default

What kind of dyno?
Reply
Old Mar 23, 2018 | 03:38 PM
  #7  
Brentoluke's Avatar
Thread Starter
Teching In
 
Joined: Mar 2017
Posts: 16
Likes: 0
Default

Originally Posted by Tuskyz28
What kind of dyno?
dynojet using hptuners
Reply
Old Mar 23, 2018 | 04:22 PM
  #8  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,451
Likes: 1,873
From: My own internal universe
Default

He has another thread in it. Imo its the exhaust.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Mar 23, 2018 | 04:29 PM
  #9  
Brentoluke's Avatar
Thread Starter
Teching In
 
Joined: Mar 2017
Posts: 16
Likes: 0
Default

Originally Posted by Darth_V8r
He has another thread in it. Imo its the exhaust.
what do you mean? I did 2 threads to see if anybody had any idea
Reply
Old Mar 23, 2018 | 04:43 PM
  #10  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,451
Likes: 1,873
From: My own internal universe
Default

I don't mean anything at all other than my opinion the exhaust as listed out in the other thread is holding it back and I apologize if the post looked snarky. It was unintentional if it did
Reply
Old Mar 23, 2018 | 04:46 PM
  #11  
Brentoluke's Avatar
Thread Starter
Teching In
 
Joined: Mar 2017
Posts: 16
Likes: 0
Default

Originally Posted by Darth_V8r
I don't mean anything at all other than my opinion the exhaust is holding it back and I apologize if the post looked snarky. It was unintentional if it did
that was my fault man I was trying to read and drive at the same time. I didn’t understand what you were saying and I ordered the Texas speed true duals with the panhard relocation so hopefully that’ll help I may change out my air box lid to the ftp 104mm and the 100mm maf and see what happens
Reply
Old Mar 25, 2018 | 04:41 AM
  #12  
KW Baraka's Avatar
TECH Addict
iTrader: (7)
 
Joined: Apr 2013
Posts: 2,180
Likes: 132
From: S.A., TX
Default

Originally Posted by Brentoluke
......Texas speed stage 4.2 cam 248/260 .657/.655 111 LSA.......car only put down 476rwhp/412rwtq. Do these numbers sound right
What's your compression ratio?

KW
Reply
Old Apr 2, 2018 | 01:37 AM
  #13  
Exidous's Avatar
TECH Fanatic
iTrader: (11)
 
Joined: Feb 2006
Posts: 1,747
Likes: 4
From: Under a rock
Default

You can tell if it's on the intake side by looking at what your vacuum is under WOT. It should be really close to atmospheric. Within 1-3kPa usually.
Reply
Old Apr 2, 2018 | 08:42 AM
  #14  
hellbents-10's Avatar
On The Tree
 
Joined: Jul 2017
Posts: 193
Likes: 2
Default

Just seems like a miss matched combo. The intake was my first clue to it not being well though out.
Reply
Old Apr 2, 2018 | 09:31 AM
  #15  
AnotherWs6's Avatar
TECH Addict
iTrader: (17)
 
Joined: Sep 2012
Posts: 2,670
Likes: 38
From: Westchester, NY
Default

Originally Posted by hellbents-10
Just seems like a miss matched combo. The intake was my first clue to it not being well though out.

Me as well. On both thoughts.
Reply




All times are GMT -5. The time now is 12:35 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE