lt1 to lt4 conversion question
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2nd Gear
Joined: Sep 2005
Posts: 2
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lt1 to lt4 conversion question
To enhance a lt1 to lt4 conversion I need to upgrade my throttle body to 52mm and put headers on also, but I do have 1 question. From what I've heard and read I should also upgrade my knock module to an lt4 module, is this correct and where is it located?
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Originally Posted by torchredlt1
To enhance a lt1 to lt4 conversion I need to upgrade my throttle body to 52mm and put headers on also, but I do have 1 question. From what I've heard and read I should also upgrade my knock module to an lt4 module, is this correct and where is it located?
It is in the ECM but I would not change it untill you get the kit installed, tuned and check for false knock. The LT4 KM is suposed to be less sensitive to allow for the valve train noise of the LT4 R/Rs but unless you have false knock it is a waist of $$$$$$
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by FD2BLK
It is in the ECM but I would not change it untill you get the kit installed, tuned and check for false knock. The LT4 KM is suposed to be less sensitive to allow for the valve train noise of the LT4 R/Rs but unless you have false knock it is a waist of $$$$$$
Supposidly, the LT4 KR Module was tuned to hear less because of the noise from the full roller valve train of the LT4. I personally have mixed feelings about how well it works. I ran a stock KRM in my car with Comp Hi-Tech roller rockers for several years without any issues. In some cars that did have some false KR or what was assumed false KR, I tried the LT4 KRM and it didn't change a thing, however some people claim good results. For my part, I am a skeptic.
