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

2009 Shelby GT500 w KB 2.8H Mammoth!!

Thread Tools
 
Search this Thread
 
Old Apr 16, 2009 | 12:28 PM
  #1  
Robert@G-Force's Avatar
Thread Starter
FormerVendor
 
Joined: Aug 2008
Posts: 99
Likes: 0
Default 2009 Shelby GT500 w KB 2.8H Mammoth!!

We just finished this 2009 Shelby Cobra last night. Car made 430 RWHP stock.
4hrs later 750 RWHP!!! The car drives just like stock... REALLY!


2009 Shelby GT500 100% STOCK!
Stock Motor
Stock Exhaust including cats
Kenne Bell 2.8H Mammoth Supercharger


751 RWHP
681 RWTQ

Not bad for a few hours work!

Dyno Video

http://videos.streetfire.net/video/G...9-w_646948.htm



Reply
Old Apr 16, 2009 | 12:59 PM
  #2  
Patrick G's Avatar
LS1 Tech Administrator
20 Year Member
Photogenic
iTrader: (14)
 
Joined: Nov 2001
Posts: 8,246
Likes: 34
From: Victoria, TX
Default

Nice gains! 23psi huh? Can you run that high of boost on 93 octane or does it require race gas? What was the power on 15psi? Very impressive for so few mods.
__________________

2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

Reply
Old Apr 16, 2009 | 01:03 PM
  #3  
darooke's Avatar
On The Tree
iTrader: (13)
 
Joined: Dec 2008
Posts: 175
Likes: 0
From: NJ
Default

Wow impressive! Those cars are well designed just like the 03-04 cobras.
Reply
Old Apr 16, 2009 | 01:13 PM
  #4  
edcmat-l1's Avatar
Banned
iTrader: (10)
 
Joined: Jul 2006
Posts: 4,782
Likes: 4
From: Va Beach
Default

That's pretty sick.
Reply
Old Apr 16, 2009 | 01:14 PM
  #5  
Mike75356's Avatar
On The Tree
iTrader: (1)
 
Joined: Nov 2008
Posts: 136
Likes: 0
Default

Originally Posted by Patrick G
Nice gains! 23psi huh? Can you run that high of boost on 93 octane or does it require race gas? What was the power on 15psi? Very impressive for so few mods.
23psi is race gas only. 17-19 psi is max on pump for kb's (usually)

Originally Posted by darooke
Wow impressive! Those cars are well designed just like the 03-04 cobras.
Even better actually
Reply
Old Apr 16, 2009 | 01:16 PM
  #6  
Robert@G-Force's Avatar
Thread Starter
FormerVendor
 
Joined: Aug 2008
Posts: 99
Likes: 0
Default

Originally Posted by Patrick G
Nice gains! 23psi huh? Can you run that high of boost on 93 octane or does it require race gas? What was the power on 15psi? Very impressive for so few mods.
It needs and octane booster to make over 730 RWHP, it made 656 RWHP on 16 psi which is the 91 octane pulley they send with the kit you can run up to 720 RWHP on just 93 octane.
Reply
Old Apr 16, 2009 | 09:20 PM
  #7  
gator's 99TA's Avatar
TECH Senior Member
iTrader: (2)
 
Joined: Nov 2001
Posts: 9,971
Likes: 2
From: Tampa Bay
Default

extremely impressive.
Reply
Old Apr 16, 2009 | 09:43 PM
  #8  
itsjustaSB's Avatar
TECH Apprentice
iTrader: (13)
 
Joined: Nov 2007
Posts: 349
Likes: 0
From: indiana
Default

wow thats thing screams
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Apr 16, 2009 | 10:07 PM
  #9  
SlwSVT's Avatar
Staging Lane
 
Joined: Nov 2008
Posts: 96
Likes: 0
From: Belen, NM
Default

Originally Posted by Robert@G-Force
It needs and octane booster to make over 730 RWHP, it made 656 RWHP on 16 psi which is the 91 octane pulley they send with the kit you can run up to 720 RWHP on just 93 octane.
Awesome numbers! I bet with a set of long tubes and full 3" exhaust it would break 700rwhp on pump gas.
Reply
Old Apr 16, 2009 | 10:08 PM
  #10  
SPLATT's Avatar
TECH Enthusiast
20 Year Member
iTrader: (1)
 
Joined: Jan 2006
Posts: 634
Likes: 8
From: San Diego, CA
Default

what a beast. nice numbers!
Reply
Old Apr 17, 2009 | 04:09 PM
  #11  
LT4POWR's Avatar
On The Tree
 
Joined: Nov 2005
Posts: 187
Likes: 0
From: OKC, OK
Default

Reply
Old Apr 17, 2009 | 05:09 PM
  #12  
ScreaminRedZ's Avatar
registered user
20 Year Member
Photogenic
iTrader: (3)
 
Joined: Oct 2005
Posts: 2,941
Likes: 0
Default

Wow, those KB cars are getting crazy! I remember when I thought that almost 600 was insane for those cars, lol.
Reply
Old Apr 17, 2009 | 06:48 PM
  #13  
stumprrp's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Aug 2007
Posts: 1,474
Likes: 0
From: Rhode Island
Default

600 lbs at 2800, gonna need 30" slicks lol
Reply
Old Apr 17, 2009 | 07:20 PM
  #14  
Robert@G-Force's Avatar
Thread Starter
FormerVendor
 
Joined: Aug 2008
Posts: 99
Likes: 0
Default

Originally Posted by stumprrp
600 lbs at 2800, gonna need 30" slicks lol
600 ft lbs from 2800 rpm till you let out
Reply
Old Apr 18, 2009 | 07:25 AM
  #15  
Zturd's Avatar
TECH Fanatic
iTrader: (12)
 
Joined: Jan 2002
Posts: 1,249
Likes: 0
From: York, PA
Default

OK OK..... now lets see her hook and go That would suck to accidentally pick on that one, on the highway... well if he had some sticky tires to make it work that is. GETTER DUN!!!!!!!
Reply
Old Apr 18, 2009 | 11:28 AM
  #16  
mike c.'s Avatar
10 Second Club
iTrader: (1)
 
Joined: Mar 2002
Posts: 4,031
Likes: 2
From: mi
Default

Wow. crazy power and still streetable.
Reply
Old Apr 18, 2009 | 12:29 PM
  #17  
Black02SLPSS's Avatar
TECH Fanatic
15 Year Member
iTrader: (5)
 
Joined: Nov 2006
Posts: 1,485
Likes: 1
From: Owasso, Ok
Default

Originally Posted by mike c.
Wow. crazy power and still streetable.
Thats the thing with FI cars, They will make insane power and still be docile on the street. Especially those 4v mustangs.
Reply
Old Apr 18, 2009 | 01:20 PM
  #18  
Abdullah's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Jun 2002
Posts: 1,455
Likes: 3
From: Kuwait
Default

Originally Posted by Robert@G-Force
We just finished this 2009 Shelby Cobra last night. Car made 430 RWHP stock.
4hrs later 750 RWHP!!! The car drives just like stock... REALLY!


2009 Shelby GT500 100% STOCK!
Stock Motor
Stock Exhaust including cats
Kenne Bell 2.8H Mammoth Supercharger


751 RWHP
681 RWTQ

Not bad for a few hours work!
great numbers. what are the specs of the stock engine? compression ratio? cams specs? is the rotating assembly forged steel, forged aluminum pistons?

thanks.
Reply
Old Apr 18, 2009 | 01:22 PM
  #19  
jb7241986's Avatar
Launching!
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (4)
 
Joined: Jul 2008
Posts: 266
Likes: 0
From: Lee NH
Default

those cars need blowers to make torque at all. modular mustangs without a kenne bell or whipple are junk. stock gt500s run 12.4 thats slow with a blower and 500 horse. but congrats thats insane power.
Reply
Old Apr 18, 2009 | 02:14 PM
  #20  
ndfrsd6's Avatar
10 Second Club
iTrader: (5)
 
Joined: Sep 2005
Posts: 2,141
Likes: 1
From: Homer Glen IL
Default

wow sick power !
Reply



All times are GMT -5. The time now is 07:28 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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