Beast96Z

iTrader: (21)

Does anyone have a picture of the upper gear on the LS2 timing set that has the reluctor that the cam sensor reads off of? I ordered a LS2 specific chain, but I don't see where the cam sensor could read anything from it. It really just looks like a LS1 chain. Also, if there is no reluctor on mine, can it be bought seperatlly from GM, or is it made onto the timing gear itself? Thanks

DrkPhx

iTrader: (15)

The LS1 cam sprocket has holes in it compared to the LS2 which is solid with a "raised bar" on the surface that is actually part of the sprocket. This raised bar is what actually breaks the magnetic field generated by the cam sensor. The LS7 sprocket is similar to the LS2.

Beast96Z

iTrader: (21)

OK, my top gear has holes around half , then under neath that there is a "raised" section that goes half around the sprocket. I assume that is what you are refering to?

98blackSS

http://filebox.vt.edu/users/mkoch/camgears.JPG

LS7 (4x) sprocket installed on motor, LS2 (1x) sprocket in my hand.

ShaunSG

The only difference is in the raised section?

If so can't both of them be run with standalone ECU systems as long as the different configuration is programmed or selected?

Beast96Z

iTrader: (21)

Alright, looks like I'm good to go then.

Bill Reid

iTrader: (14)

Take a look at 98blackSS's pic. The one on the left is the one you want. The one on the right shown on that sexy LS7, although used in the LS7 from the beginning, apparantly is now used in LS2's... after a certain production date in 2006 production year that I'm too lazy to look up. So when retrofitting an LS2 into your ride, assuming you'll tune factory PCM, you'll need to make sure you pic up the 1X (LEFT) cam sprocket...

Bill

427

iTrader: (3)

The LS2 with the 1X signal will have a 24X crank also.
The LS2 with the 4X signal will be 58X.
It looks like the crank sensor color will tell the story from the outside but it might be just on the ones I have seen. If it holds true to what has been showing up, the black crank sensor is 24X/1X combo and the white sensor is 58X/4X combo. It appears the crank sensors will not interchange signal wise, although they will bolt in the same.
Has anyone else noticed this?


Kurt

Bill Reid

iTrader: (14)

You're absolutely right Kurt...

I was just trying to point out that if a DIY ponies up to the GM parts counter and orders an "LS2" timing chain "kit" that they not go through the frustration of getting a 4x cam sprocket with their kit going into a motor (02 SS M6 - according to poster) attached to a PCM designed to work with the 24x reluctor wheel and a 1X trigger cam setup...

Bill

98blackSS

Great points Bill and Kurt.. almost forgot about the production switch-over for cam and CKP sensor and wheels.

Also, I believe both previous sensors (cam and CKP) were 12v logic and the newer are 5v.

427

iTrader: (3)

Have you guys noticed the color of the crank sensor always matching the wheel? This would make ID from the outside very easy if its the case.
We did notice the voltage change on signal also, not sure why this changed, must have been something about the new ecu's needs.

Kurt

Beast96Z

iTrader: (21)

Hmm, wonder if there is 2 diffrent part numbers. Sure don't want to get the wrong one when I order up the front cover. Thanks for the info guys.

SuperSporttruck

iTrader: (2)

So if you have an LS2 with the 1X signal, could you technically bolt that straight into a 04 truck, and it would work ???? I know the knock sensors have to be moved and the cam sensor is moved to the front timing chain cover, but the crank should work with the PCM, right ????

Beast96Z

iTrader: (21)

As far as I know, no one has had any trouble with the crank sensor from LS2 to LS1. The problem would be in the LS7 to LS1/2 swap.

Somebody09

Hmm... another Hokie in the house? CCVT much?

98blackSS

That's my sidekick mechanic's file site. He's the Hokie