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

Another Cam Question

Thread Tools
 
Search this Thread
 
Old Mar 13, 2019 | 10:29 PM
  #1  
Joereese2's Avatar
Thread Starter
Teching In
 
Joined: Sep 2018
Posts: 18
Likes: 0
From: East Tn
Default Another Cam Question

Got a 2003 GMC 1500 that I swapped to a 6.0 from the same year Suburban, I tow a 5500 lbs camper with it a few times a year but otherwise it's a daily driver. With the 3.73 I'm running 3k at 70mph in 3rd, I'm running a beefed up 4L60 and would like to be able to pull in OD which it sorta will now but struggles. I can at present afford a good cam and spring kit, suggestions???
Reply
Old Mar 13, 2019 | 10:35 PM
  #2  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,308
Likes: 3,625
From: Central Cal.
Default

Call Cam Motion or TSP. They will steer you straight to a good truck cam.
Reply
Old Mar 14, 2019 | 12:08 AM
  #3  
Summitracing's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2008
Posts: 2,241
Likes: 1,535
From: Ohio, Georgia, Nevada, Texas
Default

Originally Posted by G Atsma
Call Cam Motion or TSP. They will steer you straight to a good truck cam.
or you could call Summit Racing that created the first truly dedicated Ls cam for towing in late 2018. Sum-8718 has the same intake closing point as the Lq9 but opens up the other three valve events, .500 lift, and increases lobe intensity for big torque and power gains at no expense to idle quality or tune and will often pick up fuel mileage because the transmission is no longer dropping a gear up hills. This particular cam functions fine with stock springs, but if yours are worn, the LS6 springs are a great match and only cost another $80. It increases the power to the wheels by extending the rev range at nearly zero expense to longevity of the motor overall

Last edited by Summitracing; Mar 14, 2019 at 12:34 AM.
Reply
Old Mar 14, 2019 | 12:48 AM
  #4  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,308
Likes: 3,625
From: Central Cal.
Default

OOPS my bad! I keep forgetting to suggest you guys too. You are definitely in the LS performance game in a BIG way! Please pardon my brain fart!
Reply
Old Mar 14, 2019 | 04:38 AM
  #5  
Joereese2's Avatar
Thread Starter
Teching In
 
Joined: Sep 2018
Posts: 18
Likes: 0
From: East Tn
Default

Originally Posted by Summitracing

or you could call Summit Racing that created the first truly dedicated Ls cam for towing in late 2018. Sum-8718 has the same intake closing point as the Lq9 but opens up the other three valve events, .500 lift, and increases lobe intensity for big torque and power gains at no expense to idle quality or tune and will often pick up fuel mileage because the transmission is no longer dropping a gear up hills. This particular cam functions fine with stock springs, but if yours are worn, the LS6 springs are a great match and only cost another $80. It increases the power to the wheels by extending the rev range at nearly zero expense to longevity of the motor overall
Well beings how you guys have a pretty good file on me now anyway I might just do that !
Reply
Old Mar 14, 2019 | 04:50 AM
  #6  
Joereese2's Avatar
Thread Starter
Teching In
 
Joined: Sep 2018
Posts: 18
Likes: 0
From: East Tn
Default

I was under the impression that the LQ9 already had a beefier set of V springs in it ?
Reply
Old Mar 14, 2019 | 07:58 AM
  #7  
Summitracing's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2008
Posts: 2,241
Likes: 1,535
From: Ohio, Georgia, Nevada, Texas
Default

Originally Posted by Joereese2
I was under the impression that the LQ9 already had a beefier set of V springs in it ?
Most of the factory springs come in around 80 lbs. at the seat. LS6 springs come in at 90 and 260 open (.550 lift). That's going to help you carry power higher in the range by several hundred rpm. So we're going to make more power off idle and increase power across the board. You're not going to see a steep decrease in mileage either. The reason for this is just as you said. Having more torque and the ability to stay in a higher gear up a hill means rpm is less and the requirement for more fuel.

__________________


800-230-3030
www.SummitRacing.com
Reply
Old Mar 14, 2019 | 10:24 AM
  #8  
mikewoods's Avatar
Teching In
 
Joined: Aug 2014
Posts: 18
Likes: 0
From: Michigan
Default

Awesome advice here so far! Love that summit is so active on these boards. I’ll be looking at the SUM-8718 when it comes time for a cam in my LQ4.
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 Mar 14, 2019 | 11:24 AM
  #9  
Summitracing's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2008
Posts: 2,241
Likes: 1,535
From: Ohio, Georgia, Nevada, Texas
Default

Originally Posted by mikewoods
Awesome advice here so far! Love that summit is so active on these boards. I’ll be looking at the SUM-8718 when it comes time for a cam in my LQ4.
Thank you for the opportunity. The Pro LS cam rollout has been a great project for us. Invigorating for the whole company actually.
__________________


800-230-3030
www.SummitRacing.com
Reply
Old Mar 14, 2019 | 11:42 AM
  #10  
Joereese2's Avatar
Thread Starter
Teching In
 
Joined: Sep 2018
Posts: 18
Likes: 0
From: East Tn
Default

Ok I'm gonna order the cam and some LS6 springs today, Summit could sweeten the deal and give me a discount code on here because I'm a loyal customer and fan 😁
Reply
Old Mar 14, 2019 | 12:11 PM
  #11  
Summitracing's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2008
Posts: 2,241
Likes: 1,535
From: Ohio, Georgia, Nevada, Texas
Default

Originally Posted by Joereese2
Ok I'm gonna order the cam and some LS6 springs today, Summit could sweeten the deal and give me a discount code on here because I'm a loyal customer and fan 😁
Unfortunately not, but we very much appreciate your patronage. Thank you.
__________________


800-230-3030
www.SummitRacing.com
Reply
Old Mar 14, 2019 | 12:18 PM
  #12  
Joereese2's Avatar
Thread Starter
Teching In
 
Joined: Sep 2018
Posts: 18
Likes: 0
From: East Tn
Default

Originally Posted by Summitracing
Unfortunately not, but we very much appreciate your patronage. Thank you.
No worries ordering anyway lol
Reply




All times are GMT -5. The time now is 07:15 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