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

Cam spec based on head flow

Thread Tools
 
Search this Thread
 
Old Sep 6, 2014 | 09:15 AM
  #1  
ls1 down under's Avatar
Thread Starter
On The Tree
 
Joined: Dec 2011
Posts: 143
Likes: 0
From: Gold Coast, Australia
Default Cam spec based on head flow

Ok We're talking basic bolt on (ls6 manifold already standard)

Twin 3 inch exhaust system
1 5/8" headers
Air intake
6 speed manual

3.46 diff gear ratio

10.1 comp.

With heads that flow
(565hp@650 lift)
225/165 cfm @ 400 lift
271/195 cfm @ 600 lift


Weekender , sometimes once a week driven.

Based on the above mentioned, What cam spec would best suit this set up?
Reply
Old Sep 6, 2014 | 09:24 AM
  #2  
svede1212's Avatar
12 Second Club
iTrader: (3)
 
Joined: Apr 2004
Posts: 1,512
Likes: 3
From: Grand Rapids, Michigan
Default

You have a decent flow head with a tiny header going to over-sized exhaust. Matching the system gives better results.
Reply
Old Sep 6, 2014 | 09:28 AM
  #3  
Rise of the Phoenix's Avatar
TECH Senior Member
iTrader: (27)
 
Joined: Dec 2009
Posts: 9,728
Likes: 13
From: Jefferson City, MO
Default

I have to agree. Go with at least 1 3/4 headers. 1 7/8 would be optimal.
Reply
Old Sep 6, 2014 | 09:31 AM
  #4  
ls1 down under's Avatar
Thread Starter
On The Tree
 
Joined: Dec 2011
Posts: 143
Likes: 0
From: Gold Coast, Australia
Default

Awesome thanks !!
Reply
Old Sep 6, 2014 | 10:16 AM
  #5  
HCI2000SS's Avatar
TECH Senior Member
iTrader: (2)
 
Joined: Aug 2012
Posts: 11,137
Likes: 20
From: Howell & Fenton MI
Default

This is a LS1?
Reply
Old Sep 7, 2014 | 02:15 AM
  #6  
ls1 down under's Avatar
Thread Starter
On The Tree
 
Joined: Dec 2011
Posts: 143
Likes: 0
From: Gold Coast, Australia
Default

Originally Posted by HCI2000SS
This is a LS1?
Yeah bud, ls1 6 speed manual.
Reply
Old Sep 7, 2014 | 06:17 PM
  #7  
squalor's Avatar
TECH Regular
iTrader: (3)
 
Joined: Aug 2007
Posts: 410
Likes: 3
From: Gulf Shores Ala
Default

For a Monaro ? 2000 Kg ? No emissions testing ? 1 5/8 primary. Just a wild guess from a n00bie, 220/232, or bigger with more compression. With 1 7/8 headers, maybe 228/228
I agree with svede1212, bigger headers. Then get with a vendor who will spec a custom grind for you and spend 30 min telling him what you have, how it's driven and what you expect.
Reply
Old Sep 8, 2014 | 12:05 AM
  #8  
ls1 down under's Avatar
Thread Starter
On The Tree
 
Joined: Dec 2011
Posts: 143
Likes: 0
From: Gold Coast, Australia
Default

4 door sedan - commodore ss which weighs 1590kg.
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 Sep 8, 2014 | 12:09 AM
  #9  
ls1 down under's Avatar
Thread Starter
On The Tree
 
Joined: Dec 2011
Posts: 143
Likes: 0
From: Gold Coast, Australia
Default

The headers are a tri-y style rather than 4 into 1.

The primaries are 1 5/8"
Secondaries are 1 3/4"
Outlet's are 2.5"
Reply




All times are GMT -5. The time now is 07:32 PM.

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