LT4 Knock Sensor in a LT1

[CAJUN C4]

I heard that a LT4 Knock Sensor Module should be used in a LT1 if Roller Rockers are being Used?.It is Less Sensitive and won't pick up/sense the added Rocker Arm Noise,Headers etc. as Pinging and won't retard the Timing.?

Anyone hear of this?

 

[JAKE]

Yes. As I understand it, when GM went with roller rockers on the LT4 the knock module was picking up the noise from the RRs and interpreting it as knock and retarded the ignition timing. So the knock module was re-designed to be less sensitive to those false knock situations.

From all I've read on ther eight or so Forums I visit, guys recommend swapping the stock LT1 module for the LT4 module when RRs are installed. I did it too.

Since my engine was new, and had never been run with the LT1 module, I don't have any way to compare one module against the other. No way for me to tell if it made a difference or not. It certainly didn't hurt though.

Jake

West Point ROCKS! Nation's TOP COLLEGE per Forbes Magazine!! Graduation Day Parade 20 May 2010!!!

 

[CAJUN C4]

Thanx Jake

I'm gonna get one even though I can't here any valve train noise at all I guess it's a good thing to do.
Good luck in School.

Dennis

 

[JAKE]

Thanx Jake

I'm gonna get one even though I can't here any valve train noise at all I guess it's a good thing to do.
Good luck in School.

Dennis

In school: that's my son who's in his fourth year at West Point. I'll pass along your message though.

Good luck with your mods.

Jake

West Point ROCKS! Nation's TOP COLLEGE per Forbes Magazine!! Graduation Day Parade 20 May 2010!!!