Corvette/Camaro Hi-performance 96' LT1 LT4 Knock Sensor Module?
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 949
Likes: 1
From: Rainier Oregon
Corvette/Camaro Hi-performance 96' LT1 LT4 Knock Sensor Module?
I saw this Hi-performance knock module below on E-bay & don't really know if I should put this on my 96' LT1. It seems to me that if I somehow had a gas station attendent that put a lower grade of octane in my tank without me knowing it, I would get all kinds of knock that the computer wouldn't reconize & adjust for. Any thoughtful help would be appreciated.
http://cgi.ebay.com/ebaymotors/ws/eB...MEWA%3AIT&rd=1
http://cgi.ebay.com/ebaymotors/ws/eB...MEWA%3AIT&rd=1
Race Director
Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
That's the LT4 knock module. It was used in the LT4 because of the increased engine harmonics caused by the roller rockers. It is a little less sensitive than its LT1 counterpart. Unless you are experiencing false spark retard from roller rockers, headers, ect, it will do nothing for your engine.
Tech Contributor
Joined: Sep 2005
Posts: 1,731
Likes: 82
From: New Market AL
Is there any difference in the LT4 knock sensor from 94 to 96? Will it work OK in my 94 LT1?
I experienced three or four timing retards during a recent Datamaster log. I recently installed some 1.6 CC rollers, and the car also has LT headers. I would like to upgrade to a LT4 knock sensor, but want to make sure I get the right one.
Thanks for the help.
Clyde
I experienced three or four timing retards during a recent Datamaster log. I recently installed some 1.6 CC rollers, and the car also has LT headers. I would like to upgrade to a LT4 knock sensor, but want to make sure I get the right one.
Thanks for the help.
Clyde
Burning Brakes
Joined: Dec 2005
Posts: 805
Likes: 11
From: Hickory Flat Ga
Bryan at PCMFORLESS suggested an LT4 knock module and included the change into the re-program for my LT1 PCM. It's less sensitive to engine vibrations and won't retard timing unless there's really a ping.
They are on ebay for $35 right now. It is one of those why not items when the PCM is in your hands. It takes 2 minutes to install. Make any difference? Can't say...went in along with the new program.
They are on ebay for $35 right now. It is one of those why not items when the PCM is in your hands. It takes 2 minutes to install. Make any difference? Can't say...went in along with the new program.
Last edited by tlong; Oct 27, 2006 at 01:57 PM.
Tech Contributor
Joined: Sep 2005
Posts: 1,731
Likes: 82
From: New Market AL
Originally Posted by STL94LT1
JJ, from what I remember the LT1 and LT4 knock modules look the same. You will have to check the part number to tell the difference.
LT1 KM: 16177690
LT4 KM: 16214681
LT1 KM: 16177690
LT4 KM: 16214681
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i could check those part #'s
Safety Car
Joined: Feb 2003
Posts: 3,849
Likes: 95
From: Springfield MO
Originally Posted by STL94LT1
JJ, from what I remember the LT1 and LT4 knock modules look the same. You will have to check the part number to tell the difference.
LT1 KM: 16177690
LT4 KM: 16214681
LT1 KM: 16177690
LT4 KM: 16214681
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
Originally Posted by Lone Ranger
LT4 knock module made my '95 run worse. I know it doesn't make sense that it would, but it did. Runs best w/ its stock LT1 KM.
Tech Contributor
Joined: Sep 2005
Posts: 1,731
Likes: 82
From: New Market AL
Originally Posted by JJ 86
Ok where is the knock module on LT1 cars?
Could someone help me out?
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
Originally Posted by chevy406
I hate to admit it, but I can't find the knock sensor module on my '94. I disassembled the lower dash on the passenger side last night, but didn't see where to plug in the new LT4 module.
Could someone help me out?
Could someone help me out?
Unscrew two PCM (computer) screws
Flip over PCM
Unscrew two torx screws holding on the small cover
Change out module
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Originally Posted by chevy406
I disassembled the lower dash on the passenger side last night, but didn't see where to plug in the new LT4 module.
JAKE
Last edited by JAKE; Nov 4, 2006 at 10:37 PM.
Burning Brakes
Joined: Nov 2004
Posts: 800
Likes: 3
From: Port Orange FL
Originally Posted by Big Red Machine
It seems to me that if I somehow had a gas station attendent that put a lower grade of octane in my tank without me knowing it, I would get all kinds of knock that the computer wouldn't reconize & adjust for.[/url]
Man I havent seen one of those for probably 15 years. 
Roy
Tech Contributor
Joined: Sep 2005
Posts: 1,731
Likes: 82
From: New Market AL
Originally Posted by JAKE
OOPS!
JAKE
JAKE
Yeah it was a bit of wasted energy, but I did get rid of an annoying rattle under the dash.I went as far as flipping over the PCM and taking the two torx screws out, but the cover was stubborn and I didn't know if I should be taking it apart. Now that I know, I'll get a sledge hammer and loosen it up
Just joking. Thanks Rick
