Lt-4 Knock sensor ....
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.
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.
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^^ I do believe that or something similiar is the case.
Comment from Ed Wright
https://ls1tech.com/forums/showthrea...4+knock+sensor
Comment from Ed Wright
https://ls1tech.com/forums/showthrea...4+knock+sensor
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Verdad Gallardo 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.
Joined: Nov 2001
Posts: 10,023
Likes: 6
From: LT1 land...the "409" of the 90s!
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!
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!
