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

2003 Cobra

Thread Tools
 
Search this Thread
 
Old Apr 25, 2006 | 11:54 PM
  #81  
sdm1234's Avatar
TECH Fanatic
15 Year Member
iTrader: (8)
 
Joined: Oct 2005
Posts: 1,419
Likes: 1
From: Holland Twp/Milford, New Jersey
Default

Originally Posted by Dragframe
the cobra puts a low of 350 to the wheels... a high of 38x
A low of 350 and a high of 38X? Is that with two different cars in two different countries? That's a pretty significant difference coming from the same car, on the same dynamometer. Now, I know dynos produce different readings with the same applications, but 30 RWHP? Somebody call a Dyno service tech...
Old Apr 25, 2006 | 11:59 PM
  #82  
Redneck Z's Avatar
TECH Addict
iTrader: (3)
 
Joined: Feb 2005
Posts: 2,305
Likes: 2
From: Citrus Heights, CA
Default

Originally Posted by sdm1234
It depends on what LT1 you have. You're comparing a standard transmission to an automatic transmission percentage loss. The auto's definitely have a higher % loss, and that's no secret. Of course your car will put down only 240 to the wheels, but we're not talking about your car. The car in the spotlight here is the WS6 with the T-56 (same as the Cobra). Let's stay on topic here, and compare apples to apples "dood."

Read my posts above. The WS6 package adds a TINY amount of power to an LT1 or LS1. This small amount of power advantage over a Z28 or T/A can be offset by build tolerances. Considering the cars are all M6's, the LS1's(Z28, ss, ws6) will dyno 300+rwhp or 345+ flywheel hp. The LT1's(z28, ss, ws6) will dyno 240-250+ rwhp or 276+ flywheel hp. The LS1 flywheel hp is way underrated by the factory, and the LT1 flywheel hp is close to accurate. Look up dyno's of stock LS1's and LT1's and you'll see what I'm talking about. BTW these #'s are averages, and you'll hear of the stray car dynoing lower or higher than the #'s I've listed. An LS1 is an LS1 is an LS1, no matter what package the car came with.
Old Apr 26, 2006 | 12:14 AM
  #83  
Dragframe's Avatar
9 Second Club
15 Year Member
Liked
Loved
Community Favorite
iTrader: (14)
 
Joined: Oct 2005
Posts: 2,336
Likes: 67
From: wyoming @ 12000 DA...
Default

Originally Posted by sdm1234
A low of 350 and a high of 38X? Is that with two different cars in two different countries? That's a pretty significant difference coming from the same car, on the same dynamometer. Now, I know dynos produce different readings with the same applications, but 30 RWHP? Somebody call a Dyno service tech...
forced induction cars tend to have more variance than N/A cars...
Old Apr 26, 2006 | 12:25 AM
  #84  
Bowtie Boy's Avatar
TECH Resident
 
Joined: Dec 2005
Posts: 856
Likes: 0
From: In a house
Default

How come cobras run high 12's with S/C and LS1 f-bodys can run high 12's if drove right? OUCH! Now we know why Ford wanted a S/C slapped on just to keep up with a stock LS1 fbody:

Case in point LS1/Any fbody for that matter-Head/Cam/Supercharger=God
Old Apr 26, 2006 | 12:46 AM
  #85  
infinitebird's Avatar
TECH Veteran
20 Year Member
Liked
iTrader: (11)
 
Joined: Jul 2004
Posts: 4,280
Likes: 51
From: Denver, CO
Default

Originally Posted by Redneck Z
Read my posts above. The WS6 package adds a TINY amount of power to an LT1 or LS1. This small amount of power advantage over a Z28 or T/A can be offset by build tolerances. Considering the cars are all M6's, the LS1's(Z28, ss, ws6) will dyno 300+rwhp or 345+ flywheel hp. The LT1's(z28, ss, ws6) will dyno 240-250+ rwhp or 276+ flywheel hp. The LS1 flywheel hp is way underrated by the factory, and the LT1 flywheel hp is close to accurate. Look up dyno's of stock LS1's and LT1's and you'll see what I'm talking about. BTW these #'s are averages, and you'll hear of the stray car dynoing lower or higher than the #'s I've listed. An LS1 is an LS1 is an LS1, no matter what package the car came with.
240-250 rwhp is more like 290-300fwhp. I agree with everything else you said.
Old Apr 26, 2006 | 12:50 AM
  #86  
Redneck Z's Avatar
TECH Addict
iTrader: (3)
 
Joined: Feb 2005
Posts: 2,305
Likes: 2
From: Citrus Heights, CA
Default

Originally Posted by infinitebird
240-250 rwhp is more like 290-300fwhp. I agree with everything else you said.

I was going off of 15% drivetrain loss. I think 20% is a bit high.....
Old Apr 26, 2006 | 12:51 AM
  #87  
infinitebird's Avatar
TECH Veteran
20 Year Member
Liked
iTrader: (11)
 
Joined: Jul 2004
Posts: 4,280
Likes: 51
From: Denver, CO
Default

Originally Posted by unit213
To answer the question at hand...

I would hands down take a '03 Cobra over a LT1. There is no comparison
between the two.
Stock for stock, that is obviously correct, however (and you probably know this) you can buy a nice LT1 and upgrade it to 380-400 rwhp for less than the cost of an 03 cobra, so if cost is a factor, their hp/$ potential is definitely comparable.
Old Apr 26, 2006 | 12:54 AM
  #88  
infinitebird's Avatar
TECH Veteran
20 Year Member
Liked
iTrader: (11)
 
Joined: Jul 2004
Posts: 4,280
Likes: 51
From: Denver, CO
Default

Originally Posted by Redneck Z
I was going off of 15% drivetrain loss.
Actually I was in those figures.

ex. 295 x .85 = 250
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-1

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

 Verdad Gallardo
story-2

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

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-5

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-6

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-7

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

 Verdad Gallardo
story-8

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-9

10 Camaros You Should Never Buy

 
Old Apr 26, 2006 | 01:11 AM
  #89  
omaha stylee's Avatar
Launching!
 
Joined: Apr 2005
Posts: 279
Likes: 0
Default

I am not about to go thru all 5 pages of this thread cause it is the same 8 people arguing...... LT1 Vs Cobra (i would take the LT1 and stuff an LS1 in it and take the left over 10 G and make it a powerhouse).......LS1 Vs. Cobra (i would take the LS1) The LS1 takes very little to make FLYING and i just flat out don't like the look of the Cobra........ Now if i had a little of Ford and GM I would buy a Notchback (92-93) and shove an LS1 in it......... YUMMMMM Sexy
Old Apr 26, 2006 | 10:58 AM
  #90  
sdm1234's Avatar
TECH Fanatic
15 Year Member
iTrader: (8)
 
Joined: Oct 2005
Posts: 1,419
Likes: 1
From: Holland Twp/Milford, New Jersey
Default

15% is high.
Old Apr 26, 2006 | 01:34 PM
  #91  
Vendetta's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Jun 2003
Posts: 9,339
Likes: 3
From: NYC metro area
Default

I've heard so many morons throw out the "Ford had to slap a blower on the Cobra to keep up with LS1s" argument in my time, especially on this forum. That's the most retarded, ricer *** argument you can make. The Cobra is a car set up for forced induction, the LS1 is a car set up to make big power using more cubic inches with normal aspiration.

Two totally different setups. It doesn't matter what a car's setup is, fast is fast. Stop making whiny ***** *** excuses and acknowledge a fast car. Stock for stock, a Cobra blows an LT1 out of the water, and will almost always run faster than an LS1. Period.

/thread




All times are GMT -5. The time now is 07:13 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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