DrX

iTrader: (7)

The LS2 sensors are "flat response" while the LS1 are "resonant". http://www.deviantmethods.com/bigmoose/pages/knock.htm

There is an option in the tune to select either style sensor, but from what I read it is not clear that the LS1 PCMs have the necessary harware and software to handle the flat response sensors. Apparently in the LS1 PCMs there is a chip dedicated to processing the knock signals. The relevant tables in the tune would all differ as well. The PCM connector has to be re-pinned.

I see that Racetronix now sells an adapter harness for using the LS2 sensors (not the LS1 relocate harness). Haven't seen where anyone has done this though.

TURBHOE

iTrader: (4)

so is it big bore 454 time or what?

DrX

iTrader: (7)

Looks that way. This is why I did not want to max out the bore from the start.

OnyxSilveradoSS

iTrader: (4)

good reading about Knock sensors...makes alot of since, know more abouut knock sensors now.

you would just bolt them to the unused accesory bolt hole on the back of the head??

DrX

iTrader: (7)

This is interesting. These are the plugs I had in for the first 200 miles on this engine. The ones in the first post were on for the last 100 miles plus a few runs down the 1/4 mile.

TURBHOE

iTrader: (4)

green is lean!! i learned that with my first camed ls1. i saved mine in time.....

hellbents10

iTrader: (10)

You can not tell what the WOT fueling is from the end of the plug. You need to cut the threads off and look at the base of the porcelain after killing the engine after a WOT run. The one thing you can see is the oil speckles from detonation though.

TURBHOE

iTrader: (4)

i posted up pics like this from my ls1 on ls1tech. everybody on there said it was lean. so i fattened it up just a bit to see what it would do and sure enough it went away. just saying.