PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

cam only timing

Thread Tools
 
Search this Thread
 
Old May 23, 2010 | 05:42 PM
  #1  
BOTTLE ROCKET's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jul 2004
Posts: 720
Likes: 0
From: GA
Default cam only timing

Shouldn't I be able to run 24-27* timing at WOT on my wife's bolt on, cam only C5? The last tuner (bolt on only) set max timing at 21-22, and I would think the larger cam would bleed off some cylinder pressure, allowing more timing. (Also heard these engines like more)
She has stock heads (10-1) and the cam is 226-234.

My buddy borrowed my tuner, and I won't be able to scan until later this week, but just doing some pre-planning
Reply
Old May 23, 2010 | 05:46 PM
  #2  
SREETRACEGUY's Avatar
TECH Enthusiast
iTrader: (13)
 
Joined: Apr 2007
Posts: 605
Likes: 0
From: Phiadelphia Ms. to Houston Tx.
Default

my 2002 ls1 formula ran 29 degrees of timeing it had the thunder reverse split cam
Reply
Old May 23, 2010 | 06:10 PM
  #3  
BOTTLE ROCKET's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jul 2004
Posts: 720
Likes: 0
From: GA
Default

Cool; I thought 22 seemed a little low
He said he was getting some KR (before cam) and couldn't seem to get it to go away. The PE delay was a little high, so maybe it was getting KR when he went WOT because it temporary went lean
Reply
Old May 23, 2010 | 08:04 PM
  #4  
BLK02WS6's Avatar
9 Second Club
iTrader: (2)
 
Joined: Jul 2002
Posts: 2,583
Likes: 1
From: on the dyno tuning in MD
Default

Yep, 26 or 27 if the AFR is right... maybe it was knockin cause the cylinders were carboned up - seen that plenty of times...
Reply
Old May 23, 2010 | 08:42 PM
  #5  
BOTTLE ROCKET's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jul 2004
Posts: 720
Likes: 0
From: GA
Default

Originally Posted by BLK02WS6
Yep, 26 or 27 if the AFR is right... maybe it was knockin cause the cylinders were carboned up - seen that plenty of times...
Wondered about that since it has quite a few miles on it
what are guys doing to clean them now? Used to use the old cold water down the carb while idling, trick, but not very common now
Reply
Old May 24, 2010 | 05:23 AM
  #6  
BLK02WS6's Avatar
9 Second Club
iTrader: (2)
 
Joined: Jul 2002
Posts: 2,583
Likes: 1
From: on the dyno tuning in MD
Default

Originally Posted by BOTTLE ROCKET
Wondered about that since it has quite a few miles on it
what are guys doing to clean them now? Used to use the old cold water down the carb while idling, trick, but not very common now
Now its the suck a glass of water out of a straw with the brake booster vacuum line trick... LOL! I have the engine rev'd to about 3k and use a straw so you don't overdo it...
Reply
Old May 24, 2010 | 03:20 PM
  #7  
BOTTLE ROCKET's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jul 2004
Posts: 720
Likes: 0
From: GA
Default

Originally Posted by BLK02WS6
Now its the suck a glass of water out of a straw with the brake booster vacuum line trick... LOL! I have the engine rev'd to about 3k and use a straw so you don't overdo it...
Interesting, but if it works.
I would like to make sure I'm not getting spark knock from carbon buildup.
Reply
Old May 25, 2010 | 05:31 AM
  #8  
BLK02WS6's Avatar
9 Second Club
iTrader: (2)
 
Joined: Jul 2002
Posts: 2,583
Likes: 1
From: on the dyno tuning in MD
Default

I've tuned hundreds of these cars, and seen it several times where the fueling is right and the car knocks with low timing (audible even)... give it a drink, and all is well... usually carboned up due to the lousy PCV system sucking oil into the engine for miles and miles.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-2

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-3

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-6

10 Camaros You Should Never Buy

 
story-7

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-8

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

 Brett Foote
story-9

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

 Verdad Gallardo
Old May 25, 2010 | 08:34 AM
  #9  
02 BLK WS6's Avatar
10 Second Club
iTrader: (11)
 
Joined: May 2005
Posts: 1,689
Likes: 2
From: Glen Carbon, IL
Default

TSP 231/237, stock heads, 31* timing
Every engine will be a little different, but should be in the upper 20's at least.
Reply
Old May 25, 2010 | 11:25 AM
  #10  
BOTTLE ROCKET's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Jul 2004
Posts: 720
Likes: 0
From: GA
Default

Originally Posted by 02 BLK WS6
TSP 231/237, stock heads, 31* timing
Every engine will be a little different, but should be in the upper 20's at least.
wow- 31* is some major timing.

If I can get it in the upper 20's, it should pick up some good hp from 21-22!!

I've got to make sure any carbon buildup is removed, and get my tuning software back and see what I can do.
Reply
Old May 25, 2010 | 06:18 PM
  #11  
02 BLK WS6's Avatar
10 Second Club
iTrader: (11)
 
Joined: May 2005
Posts: 1,689
Likes: 2
From: Glen Carbon, IL
Default

My car was dyno tuned by someone other than me and was at 29*. I took it to the track to dial it in and gained 1.5 mph with additional timing/fueling.
Reply
Old May 25, 2010 | 07:34 PM
  #12  
BLK02WS6's Avatar
9 Second Club
iTrader: (2)
 
Joined: Jul 2002
Posts: 2,583
Likes: 1
From: on the dyno tuning in MD
Default

Originally Posted by 02 BLK WS6
My car was dyno tuned by someone other than me and was at 29*. I took it to the track to dial it in and gained 1.5 mph with additional timing/fueling.
Were you logging it to see if it was actually seeing 31* going down the track?
Reply




All times are GMT -5. The time now is 10:44 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE