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

Lt-4 Knock sensor ....

Thread Tools
 
Search this Thread
 
Old Mar 7, 2006 | 11:53 AM
  #1  
MIGHTY z28's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 48
Likes: 0
From: Aurora , Ill
Default Lt-4 Knock sensor ....

Where is it located and how do i get rid of it ? I plan on spraying my car and i was told that i have to disconnect this !

Thank you,
Dale
Reply
Old Mar 7, 2006 | 12:09 PM
  #2  
slow96z's Avatar
TECH Enthusiast
iTrader: (12)
 
Joined: Jan 2004
Posts: 586
Likes: 0
From: South East Houston
Default

You have the LT1 knock sensor right now and need to change it to an LT4 sensor. There are 2 parts you need to do the conversion. One is in the computer. You pull the ecm and there are 2 screws holding a door on. I think they are t-15, but I'm not sure. Pull the door and change the chip inside there to the LT4 version. Reinstall door and computer.

Next, on the pass side of the block there is a round sensor that screws into the engine. You need to pull this and change it to the LT4 one as well. Wait for the car to cool and try to have quick hands because you will loose a lot of coolant doing this swap.

You can get both parts from the dealer and I don't remember it being a very expensive mod, under $50.
Reply
Old Mar 7, 2006 | 12:46 PM
  #3  
MIGHTY z28's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 48
Likes: 0
From: Aurora , Ill
Default

Thank u sir.

What will happen if i leave it and spray it.
Reply
Old Mar 7, 2006 | 01:09 PM
  #4  
RoAdRaGe912's Avatar
TECH Enthusiast
 
Joined: Nov 2004
Posts: 660
Likes: 0
Default

you'll have a nitrous powered Z28..........
Reply
Old Mar 7, 2006 | 01:54 PM
  #5  
slow96z's Avatar
TECH Enthusiast
iTrader: (12)
 
Joined: Jan 2004
Posts: 586
Likes: 0
From: South East Houston
Default

Yeah, probably nothing. I know the reason most folks change it is to desensitize the knock module for roller rockers so it won't pull timing thinking it's detonating.
Reply
Old Mar 7, 2006 | 02:21 PM
  #6  
buffman's Avatar
TECH Addict
iTrader: (9)
 
Joined: Nov 2004
Posts: 2,289
Likes: 0
From: Kzoo, MI
Default

since when did you have to change the knock sensors themselves to the lt4 units for the Knock Module to work.................
Reply
Old Mar 7, 2006 | 02:32 PM
  #7  
LT1 POWR's Avatar
On The Tree
iTrader: (4)
 
Joined: Jun 2005
Posts: 103
Likes: 0
From: Bellevue, NE
Default

I thought the actual sensors were the same and all you needed to replace was the knock module.
Reply
Old Mar 7, 2006 | 03:08 PM
  #8  
buffman's Avatar
TECH Addict
iTrader: (9)
 
Joined: Nov 2004
Posts: 2,289
Likes: 0
From: Kzoo, MI
Default

^^ I do believe that or something similiar is the case.

Comment from Ed Wright

https://ls1tech.com/forums/showthrea...4+knock+sensor
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 Mar 8, 2006 | 12:25 AM
  #9  
MIGHTY z28's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 48
Likes: 0
From: Aurora , Ill
Default

So another words i can spray a small dry shot w/this stock knock sensor ?
Reply
Old Mar 8, 2006 | 12:52 AM
  #10  
buffman's Avatar
TECH Addict
iTrader: (9)
 
Joined: Nov 2004
Posts: 2,289
Likes: 0
From: Kzoo, MI
Default

I dont see why you couldn't. If set up properly, I don't see the knock sensor posing a problem. People tend to switch to the LT4KM because it's said to pickup true knock. i.e it's not as sensitive as the stock LT1KM, so it won't interpret exhaust or valvetrain noise as knock.
Reply
Old Mar 8, 2006 | 12:54 AM
  #11  
TwoFast4Lv's Avatar
10 Second Club
20 Year Member
Photogenic
iTrader: (8)
 
Joined: Nov 2001
Posts: 10,023
Likes: 6
From: LT1 land...the "409" of the 90s!
Default

LEAVE the Knock sensor!!!!!!!

no need for any changes. I have ran every thing from 14PSI to 150 N20 on my stock sensors!

It is for safety

With out it your Engine is open to detonation and broken pistons.

DO NOT put a 96-97 Knock sensor in your car!
Reply
Old Mar 8, 2006 | 11:02 AM
  #12  
MIGHTY z28's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 48
Likes: 0
From: Aurora , Ill
Default

Thanks u guys !
Reply




All times are GMT -5. The time now is 08:03 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