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

Ls1-5.3 power loss?

Thread Tools
 
Search this Thread
 
Old Apr 20, 2009 | 11:01 PM
  #1  
fuzzyjk's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jan 2008
Posts: 609
Likes: 1
From: Cape Cod
Default Ls1-5.3 power loss?

On a nearly stock engine (L33 5.3) with a mild 212/216 cam and nothing else, what do you feel the power loss would be by removing the truck intake in favor of the lower/better looking LS1 intake. I would like to keep costs down and since I can purchase a LS1 intake for $30.00 I figured that is pretty low cost. I need to change the water pump and pullies to Corvette style anyway. Am I losing 5 or 15 crank HP?

By the way this is going in a very light 2250 lbs car.

What do you think?
Reply
Old Apr 21, 2009 | 09:08 PM
  #2  
fuzzyjk's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jan 2008
Posts: 609
Likes: 1
From: Cape Cod
Default

Originally Posted by fuzzyjk
On a nearly stock engine (L33 5.3) with a mild 212/216 cam and nothing else, what do you feel the power loss would be by removing the truck intake in favor of the lower/better looking LS1 intake. I would like to keep costs down and since I can purchase a LS1 intake for $30.00 I figured that is pretty low cost. I need to change the water pump and pullies to Corvette style anyway. Am I losing 5 or 15 crank HP?

By the way this is going in a very light 2250 lbs car.

What do you think?

No one knows? Way to much knowledge in here to stump the crowd with this.
Reply
Old Apr 21, 2009 | 09:16 PM
  #3  
nastychevelle's Avatar
TECH Resident
iTrader: (7)
 
Joined: Jul 2008
Posts: 934
Likes: 1
From: troy, IL
Default

you'll definitely lose some do to the Ci loss but with that cam and if you added a set of long tubes and a ported TB you'd be looking at roughly the 340hp range even with a ls1 intake
Reply
Old Apr 21, 2009 | 09:27 PM
  #4  
goober35's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: May 2003
Posts: 1,387
Likes: 0
From: St Clairsville, Oh
Default

Dont do it.
Reply
Old Apr 22, 2009 | 07:48 AM
  #5  
fuzzyjk's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jan 2008
Posts: 609
Likes: 1
From: Cape Cod
Default

Why not?
Reply
Old Apr 22, 2009 | 08:27 AM
  #6  
89LS1RS's Avatar
Launching!
iTrader: (1)
 
Joined: Jun 2008
Posts: 210
Likes: 0
From: Chicago, illinois
Default

Originally Posted by nastychevelle
you'll definitely lose some do to the Ci loss but with that cam and if you added a set of long tubes and a ported TB you'd be looking at roughly the 340hp range even with a ls1 intake
he's just talking about switching intakes, not going from an ls1 to 5.3.
doesnt the car intake make more hp, less torque?
Reply
Old Apr 22, 2009 | 08:31 AM
  #7  
sroach20's Avatar
TECH Addict
iTrader: (31)
 
Joined: Dec 2002
Posts: 2,318
Likes: 1
From: houston, Texas
Default

5.3 intakes are for low end to get heavy trucks moving.
Reply
Old Apr 22, 2009 | 02:53 PM
  #8  
soulefood's Avatar
Teching In
iTrader: (1)
 
Joined: Apr 2009
Posts: 27
Likes: 0
From: Elizabeth city, NC (for right now)
Default

the LS1 intake doesn't flow enough above a truck intake to really see a difference in HP with a truck, and he'll lose a bunch of torque. so if you stay with a truck youll be more satisfied. remember when you step on the gas hp is not what pinns you to your seat its torque. keep the truck intake or you will be dissapointed.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Pouria Savadkouei
story-1

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

 Verdad Gallardo
story-2

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-3

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-4

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-5

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

 Verdad Gallardo
story-6

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-7

10 Camaros You Should Never Buy

 
story-8

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-9

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
Old Apr 22, 2009 | 11:31 PM
  #9  
fuzzyjk's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jan 2008
Posts: 609
Likes: 1
From: Cape Cod
Default

Originally Posted by soulefood
the LS1 intake doesn't flow enough above a truck intake to really see a difference in HP with a truck, and he'll lose a bunch of torque. so if you stay with a truck youll be more satisfied. remember when you step on the gas hp is not what pinns you to your seat its torque. keep the truck intake or you will be dissapointed.
The problem is height, I only have 7 3/4 inches and the truck intake is 9.5 Since this is going into a mid engine car, body mods will not work either.

When you say a bunch....what is the numaric value?
Reply
Old Apr 23, 2009 | 08:30 AM
  #10  
sman's Avatar
TECH Regular
15 Year Member
iTrader: (4)
 
Joined: Sep 2007
Posts: 411
Likes: 0
Default

If its a clearance issue, then its kinda irrelevant right? If the truck wont fit you have to do it. I did, running a bone stock 5.3 in a camaro with the ls1 intake. Seems to move the car around pretty good.
Reply
Old Apr 23, 2009 | 10:03 AM
  #11  
Johnnystock's Avatar
TECH Addict
15 Year Member
Photogenic
Photoriffic
Liked
iTrader: (6)
 
Joined: Feb 2007
Posts: 2,684
Likes: 39
From: Canada
Default

If you have no choice, do it. Its not the end of the world...And one day I guess you'll go with an LS6 intake.
Reply
Old Apr 23, 2009 | 12:21 PM
  #12  
5_02ls1's Avatar
11 Second Club
iTrader: (20)
 
Joined: Oct 2006
Posts: 3,131
Likes: 0
From: Virginia
Default

you will not lose enough power/tourqe to lose any sleep over...ill be running an mild h/c 5.3 with a ls1 intake..."till i can afford a victor jr and a hood lol"....

im not expecting to make as much power as i could with a better manifold.....but im not gonna worry about it...
Reply
Old Apr 24, 2009 | 07:34 AM
  #13  
fuzzyjk's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jan 2008
Posts: 609
Likes: 1
From: Cape Cod
Default

Originally Posted by sman
If its a clearance issue, then its kinda irrelevant right? If the truck wont fit you have to do it. I did, running a bone stock 5.3 in a camaro with the ls1 intake. Seems to move the car around pretty good.
I could go with a LS6 intake, BBK, Holley or even a Vic Jr but if we are talking 5 Hp then there is no use cutting up thre LS6 manifold to use the truck rails and injectors or having to "play with/retune" for the others. I know the LS6 makes big difference with the larger cubed/modded engines but with the 5.3 and a mild cam I am not so sure if it is worth the $400 if it is only a few hp.

I guess the other question would be, what is to be gained by using the better intakes. If I save $400 going LS1 intake but lose 5HP or spend the $400 and pick up 10 then the 15Hp is worth the extra expense.
Reply




All times are GMT -5. The time now is 04:06 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE