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

is a lt4 knock module important??

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Old 12-30-2006, 01:49 PM
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Default is a lt4 knock module important??

i want to know if my buddy should get one of these in his 388 stroker or if the stock one is ook
Old 12-30-2006, 01:58 PM
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Originally Posted by Mr_president
i want to know if my buddy should get one of these in his 388 stroker or if the stock one is ook
Its common with the stock knock module that the knock sensor can pick up false knock from roller rockers or even header ping.

Do a search and you'll find more than enough info on it. You can find one for $20 - $30. Why not spend that to not have to deal with the headache of false knock when trying to tune the car?
Old 12-30-2006, 02:07 PM
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yes, should be one of your first mods before exhuast
Old 12-30-2006, 05:18 PM
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It will help avoid timing retard
Old 12-30-2006, 08:06 PM
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Originally Posted by rasputin
yes, should be one of your first mods before exhuast


Old 12-30-2006, 09:54 PM
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Originally Posted by rasputin
yes, should be one of your first mods before exhuast
+2........
Old 12-31-2006, 07:38 PM
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What's the difference between the knock module and the knock sensor? I know one goes in the PCM and one goes in the block, but which one will avoid timing retard? I've got midlength headers and roller rockers and I'm not sure if it has either one.
Old 12-31-2006, 07:39 PM
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I got the LT1 Knock on my 383 working fine
Old 12-31-2006, 07:56 PM
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Well, the knock sensor is screwed into the block on the passenger side underneath. It simply sends readings to the PCM. The knock module is a removable chip that is placed in/on the PCM and it is what does the retard. the module interprets the readings from the sensor. Getting an LT4 module will lessen your chance of it retarding the timing for knocking that isn't there. The LT4s had the 1.6 rockers, bigger valves, and bigger cam so the LT4 module was designed to be not as "sensitive" so to speak as the LT1 module.
Old 12-31-2006, 08:02 PM
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Originally Posted by LT14LIFE JT
What's the difference between the knock module and the knock sensor? I know one goes in the PCM and one goes in the block, but which one will avoid timing retard? I've got midlength headers and roller rockers and I'm not sure if it has either one.
I think the sensor retard the timing. I was told to get them both at the same time




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