Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

Quick Question for you l92's gurus

Thread Tools
 
Search this Thread
 
Old Feb 15, 2007 | 10:04 PM
  #1  
bcs's Avatar
bcs
Thread Starter
Staging Lane
 
Joined: Aug 2003
Posts: 82
Likes: 0
Default Quick Question for you l92's gurus

I have a 408 that made 452hp/425tq with afr 205 66cc heads, -12 pistons, and The cam is a 244/248 .612/615 115

This was with a stock auto,rear end, intake and compression around 10:2 to 1
Also, had 1 3/4 headers.

My question is, Would it be worth it to change to some ported l92's and the l76 intake or just upgrade to a fast intake and better headers?

Do you think with l92's I can get over 500rwhp?
Reply
Old Feb 15, 2007 | 10:18 PM
  #2  
stevewix's Avatar
Launching!
 
Joined: May 2005
Posts: 210
Likes: 0
Default

give it a little more compression, i don't see why not?
Reply
Old Feb 15, 2007 | 10:51 PM
  #3  
ChucksZ06's Avatar
TECH Resident
iTrader: (9)
 
Joined: Feb 2005
Posts: 976
Likes: 1
Default

You would not be able to get any compression out of the l92 with your dished pistons.
I am building an l92. If I were you I would go with the fast and better exhaust. If you did that and got the comp to 11/1 you would get some gains.
Reply
Old Feb 15, 2007 | 10:59 PM
  #4  
bcs's Avatar
bcs
Thread Starter
Staging Lane
 
Joined: Aug 2003
Posts: 82
Likes: 0
Default

What about milling the l92's?
Reply
Old Feb 16, 2007 | 07:57 AM
  #5  
Quik's Avatar
Banned
iTrader: (7)
 
Joined: Oct 2003
Posts: 4,893
Likes: 0
From: Pittsburgh!!!!!!!! Pa
Default

Originally Posted by ChucksZ06
You would not be able to get any compression out of the l92 with your dished pistons.
I am building an l92. If I were you I would go with the fast and better exhaust. If you did that and got the comp to 11/1 you would get some gains.
milling them and a thin gasket will raise his SCR...
Reply
Old Feb 16, 2007 | 08:03 AM
  #6  
Quik's Avatar
Banned
iTrader: (7)
 
Joined: Oct 2003
Posts: 4,893
Likes: 0
From: Pittsburgh!!!!!!!! Pa
Default

Originally Posted by bcs
I have a 408 that made 452hp/425tq with afr 205 66cc heads, -12 pistons, and The cam is a 244/248 .612/615 115

This was with a stock auto,rear end, intake and compression around 10:2 to 1
Also, had 1 3/4 headers.

My question is, Would it be worth it to change to some ported l92's and the l76 intake or just upgrade to a fast intake and better headers?

Do you think with l92's I can get over 500rwhp?
something cant be right. those numbers are low!!!! those numbers what some cammed LS1s make
Reply
Old Feb 16, 2007 | 10:05 AM
  #7  
TNTramair's Avatar
11 Second Club
iTrader: (15)
 
Joined: Feb 2004
Posts: 2,743
Likes: 1
From: ne philly
Default

Originally Posted by Quik
something cant be right. those numbers are low!!!! those numbers what some cammed LS1s make
-12cc pistons arent helping much...i would say with 10.5 to 1 or even better 11 to 1 he would see atleast another 40hp?!? no?
Reply
Old Feb 16, 2007 | 01:59 PM
  #8  
SDB's Avatar
SDB
10 Second Club
iTrader: (7)
 
Joined: Mar 2003
Posts: 2,327
Likes: 2
Default

definately better money wise to sell the AFR 205's, intake, little headers, etc. Get a set of ported/assembled L92's, L76 intake package, and 1 7/8 to 2 " headers. If you can manage to easily raise the CR, you will gain a lot of power.

Stock auto aint gonna live long, get a RPM built 4L60E for $1600-2000 and stick a nasty converter in it.
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 Feb 16, 2007 | 02:22 PM
  #9  
2c5s's Avatar
10 Second Club
20 Year Member
iTrader: (11)
 
Joined: Sep 2003
Posts: 1,676
Likes: 0
From: Murrieta Ca.
Default

I have -9cc pistons, .051 gasket and a 65cc chamber on my L92 408.
Reply
Old Feb 16, 2007 | 08:11 PM
  #10  
ChucksZ06's Avatar
TECH Resident
iTrader: (9)
 
Joined: Feb 2005
Posts: 976
Likes: 1
Default

Originally Posted by 2c5s
I have -9cc pistons, .051 gasket and a 65cc chamber on my L92 408.
So what is your comp ratio?
Reply
Old Feb 16, 2007 | 08:27 PM
  #11  
Quik's Avatar
Banned
iTrader: (7)
 
Joined: Oct 2003
Posts: 4,893
Likes: 0
From: Pittsburgh!!!!!!!! Pa
Default

Originally Posted by ChucksZ06
So what is your comp ratio?
should be over 11.1
Reply
Old Feb 16, 2007 | 09:23 PM
  #12  
2c5s's Avatar
10 Second Club
20 Year Member
iTrader: (11)
 
Joined: Sep 2003
Posts: 1,676
Likes: 0
From: Murrieta Ca.
Default

Originally Posted by ChucksZ06
So what is your comp ratio?

It's 11 to1.
Reply




All times are GMT -5. The time now is 12:07 PM.

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