Forced Induction Superchargers | Turbochargers | Intercoolers

L92's and boost

Old Jul 2, 2009 | 09:14 PM
  #1  
tennerv8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: May 2007
Posts: 723
Likes: 1
From: Mn
Default L92's and boost

Who's boosting with L92 heads? Are these heads good with boost or is a stock 6.0 head a better choice?
Reply
Old Jul 2, 2009 | 09:39 PM
  #2  
9sectruck's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Dec 2008
Posts: 1,173
Likes: 2
From: jefferson city MO
Default

I do not remember where i read this, it was on this site or gm high tech, but once you start really pushing on those heads, they lift and dont just blow out gaskets they crack around the head bolt holes 700ish hp range if i remember right
Reply
Old Jul 3, 2009 | 09:36 AM
  #3  
tennerv8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: May 2007
Posts: 723
Likes: 1
From: Mn
Default

So stock 6.0 heads will make less power technically with their 210cc intake runner vs. the 260cc intake runner of the L92 head. Do the stock 6.0 head hold up better than the L92's? Just more durable or what?
Reply
Old Jul 4, 2009 | 09:23 AM
  #4  
tennerv8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: May 2007
Posts: 723
Likes: 1
From: Mn
Default

Is it pretty easy to make 600ish rwhp with the L92's with some boost? It sounds like a pretty safe hp goal.
Reply
Old Jul 4, 2009 | 01:45 PM
  #5  
180ls1's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Jun 2007
Posts: 1,528
Likes: 1
From: San Diego
Default

Originally Posted by tennerv8
Is it pretty easy to make 600ish rwhp with the L92's with some boost? It sounds like a pretty safe hp goal.
hate to say it but try a search. The search button is your best friend.

I beleive 600 horsepower will be fine on l92's. but you could just save some coin and run stock truck 317's and they have a thicker deck and less cc's. 600rwhp is bot pushing those heads that much at all.
Reply
Old Jul 4, 2009 | 06:33 PM
  #6  
tennerv8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: May 2007
Posts: 723
Likes: 1
From: Mn
Default

Originally Posted by 180ls1
hate to say it but try a search. The search button is your best friend.

I beleive 600 horsepower will be fine on l92's. but you could just save some coin and run stock truck 317's and they have a thicker deck and less cc's. 600rwhp is bot pushing those heads that much at all.
Because I already bought them I am wanting to do a n/a 6.0 maybe with a carb and L92's and then move up in the future to fuel injection and a turbo. But then I will have to buy a different intake for the L92's when I go injected. Or should I skip right over the carb setup and go with the fuel injection? Oh decisions.
Reply
Old Jul 4, 2009 | 10:29 PM
  #7  
exploder's Avatar
Staging Lane
iTrader: (1)
 
Joined: Jan 2006
Posts: 85
Likes: 0
Default

I make 780whp through my L92's with no problems and I have never had a head lift yet. I run 15psi through them.
Reply
Old Jul 5, 2009 | 07:47 AM
  #8  
tennerv8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: May 2007
Posts: 723
Likes: 1
From: Mn
Default

Originally Posted by exploder
I make 780whp through my L92's with no problems and I have never had a head lift yet. I run 15psi through them.
Now thats what I want to hear. What cam has worked good for you?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Pouria Savadkouei
story-1

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

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Jul 5, 2009 | 07:57 AM
  #9  
exploder's Avatar
Staging Lane
iTrader: (1)
 
Joined: Jan 2006
Posts: 85
Likes: 0
Default

I have had my l92 on for over 2 years and several 9 and 10 sec passes on it. I used ARP head studs torqued to 80. I used stock MLS gaskets for a 4'' bore. I also put a little yamabond on both sides of the gasket and some on the gasket itself and I will gurantee you it works.

As far as cams go I have had 2 different combos. The better cam was the first one I had ground 232/240 590 608 115lsa. If I were to change anything from the first cam I would probably put it on a 116. My latest cam sucked and was a 239/255 620 620 114lsa. It actually helped me lose about 4psi and a pretty good bit of torque under the curve.
Reply
Old Jul 5, 2009 | 08:13 AM
  #10  
tennerv8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: May 2007
Posts: 723
Likes: 1
From: Mn
Default

Wow that big of a lift huh?
Reply
Old Jul 7, 2009 | 12:56 AM
  #11  
tennerv8's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (7)
 
Joined: May 2007
Posts: 723
Likes: 1
From: Mn
Default

Are the factory L92 intakes pretty limited performance wise? What are my choices for stock intakes? L76,L92 and Ls3?
Reply
Old Jul 7, 2009 | 07:12 AM
  #12  
ZLEEPER's Avatar
TECH Apprentice
20 Year Member
iTrader: (24)
 
Joined: Nov 2002
Posts: 350
Likes: 0
From: spring, TX
Default

I switched from the factory intake (L92) at the recommendation of a good mechanic. Switched to a carb style. There was a concern that the #7 cylinder ??? had a tendancy to run leaner than the others causing problems.
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 03:44 AM.

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