LT1-LT4 Modifications 1993-97 Gen II Small Block V8

This is false knock right? HELP!!

Thread Tools
 
Search this Thread
 
Old Mar 17, 2008 | 11:42 PM
  #1  
i420tom's Avatar
Thread Starter
9 Second Club
iTrader: (11)
 
Joined: Mar 2007
Posts: 351
Likes: 6
From: chicago burbs
Default This is false knock right? HELP!!

I have always had knock in the range of 3600 -4600 logged via datamaster only at WOT.

I does it with 39 degrees timing o2 reading 960 with 93 pump gas

I does it with 39 degrees timing o2 reading 960 with 100pumpgas

I does it with 36degrees timing o2 reading 960 with 100 pump gas

it does it with 32 degrees timing 02 reading 920 with 100 octane and with a 15 percent reduction in the knock attack table.

WTF!!

any help would be greatly appreciated

Last edited by i420tom; Mar 18, 2008 at 03:11 PM.
Reply
Old Mar 18, 2008 | 02:57 AM
  #2  
infinitebird's Avatar
TECH Veteran
20 Year Member
Liked
iTrader: (11)
 
Joined: Jul 2004
Posts: 4,280
Likes: 51
From: Denver, CO
Default

960 on your o2 is way too rich, unless you have a power adder.

but yeah, if it's the same with 100 I would guess it is false.
Reply
Old Mar 18, 2008 | 03:10 PM
  #3  
i420tom's Avatar
Thread Starter
9 Second Club
iTrader: (11)
 
Joined: Mar 2007
Posts: 351
Likes: 6
From: chicago burbs
Default

Originally Posted by infinitebird
960 on your o2 is way too rich, unless you have a power adder.

but yeah, if it's the same with 100 I would guess it is false.
yeah i know 960 is RICH, im working on that along with knock retard, stall wall and shift points now.....

Im thinking of aiming for 910.... is that still a tad on the rich side or is that bout right
Reply
Old Mar 18, 2008 | 03:43 PM
  #4  
infinitebird's Avatar
TECH Veteran
20 Year Member
Liked
iTrader: (11)
 
Joined: Jul 2004
Posts: 4,280
Likes: 51
From: Denver, CO
Default

well you can never tell exactly with the narrow band sensors but typically 910 would still be a tad rich, i usually try for 890-900 as a baseline, then put in on a dyno etc.
Reply
Old Mar 18, 2008 | 03:46 PM
  #5  
i420tom's Avatar
Thread Starter
9 Second Club
iTrader: (11)
 
Joined: Mar 2007
Posts: 351
Likes: 6
From: chicago burbs
Default

Originally Posted by infinitebird
well you can never tell exactly with the narrow band sensors but typically 910 would still be a tad rich, i usually try for 890-900 as a baseline, then put in on a dyno etc.
Great info thanks!!!!!!!!!!
Reply
Old Mar 20, 2008 | 02:51 PM
  #6  
i420tom's Avatar
Thread Starter
9 Second Club
iTrader: (11)
 
Joined: Mar 2007
Posts: 351
Likes: 6
From: chicago burbs
Default

anyone else? Most likely false right? give me ur opinion
Reply
Old Mar 20, 2008 | 04:39 PM
  #7  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

I was under the impression that the O2s are bypassed under WOT?
Reply
Old Mar 20, 2008 | 04:58 PM
  #8  
i420tom's Avatar
Thread Starter
9 Second Club
iTrader: (11)
 
Joined: Mar 2007
Posts: 351
Likes: 6
From: chicago burbs
Default

Originally Posted by Formula350
I was under the impression that the O2s are bypassed under WOT?

they are bypassed, the computer doesnt use them to decide if it is rich or lean at WOT

however, YOU CAN use them to get a general idea of where you are at with you air to fuel ratio when using datamaster logging or any other way of reading them while driving, mind you they are not exact when not around stoich.

you are correct the computer doenst use them at wot but they are still ON and helpful.
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 Mar 20, 2008 | 07:01 PM
  #9  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Gotcha.
Reply




All times are GMT -5. The time now is 11:22 AM.

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