pjku79

iTrader: (5)

I have read that the LS2 cam position sensor is in the front timing cover and the LS1 is in the rear. What I couldn't find is if there is a difference in the cam itself? I assume there is, but most cams I found forsale say LS1 or LS2. Are the cams themselves the same? Maybe that wasn't clear. If I buy a comp cam from an LS2, can i drop it right into my LS1 without changing anything?

S10xGN

iTrader: (11)

Just make sure it has the 3-bolt nose and your good to go.

wildcamaro

iTrader: (15)

The cams can be ran by both ls1 and ls2 regardless of the can sensor (rear of block or front timing cover)...usually ls2 cams have more duration bc of the increase in cubes (+18) but you can still run them in an ls1 with good intake and heads

3rdCoastPowerSports

iTrader: (5)

LS1 cam can go into an LS2 but an LS2 cam can not go into an LS1. The LS1 cam has a cam gear built into the back of the cam for the rear cam positioning sensor. the LS2 cam has no gear and cannot be used in an LS1.

3rdCoastPowerSports

iTrader: (5)

NO you cannot

wildcamaro

iTrader: (15)

Really, I never knew that...but I have never had an ls2 or gen 4 motor apart...and I thought I knew lol

It makes sense though now wonder why no one ever sells ls2 cams

S10xGN

iTrader: (11)

Huh? Any 3-bolt LS cam will work in any LS motor. The only deciding factor is the timing gear, and he already has the correct one. Disregarding crap like VVT and DOD, you could put a 1997 cam in a 2011 engine if you wanted to just by swapping the top gear.

3rdCoastPowerSports

iTrader: (5)

he said "without changing anything". swapping a gear would be changing something.

joecar

LS1 style cam: CMP reluctor is machined into cam just in front of the rear bearing journal, it provides a 1x signal.

LS2 style cam: CMP reluctor is the cam sprocket which is shaped to produce either a 1x signal or a 4x signal.

To run with your LS1 PCM you need the CMP reluctor that produces the 1x signal.

To run a LS2 style cam, you need the 1x cam sprocket (which comes only in 3-bolt flavor) which means you are restricted to 3-bolt cams, and you also need a CMP extension harness and front cover.


See attached image (which I borrowed from ls1tech).

pjku79

iTrader: (5)

Great information guys. I guess I will have to wait to see what I bought. It is on its way. I can always resell it if it wont work.

joecar, I couldn't get the picture to load.

joecar

Can you see this:

5 Liter Eater

iTrader: (5)

This is a good reference page for both cam and crank reluctors:

http://www.lingenfelter.com/page/ls-...lector-id-page

S10xGN

iTrader: (11)

Not to be a d!ck, but he already has the correct cam gear so nothing needs to be changed.

Gleno-88

Why when changing to the 1x cam gear to run ls1 PCM do you have to change the front cover?

S10xGN

iTrader: (11)

You may (or not) have to change it. depends on whether it has the VVT option, as that cover puts the sensor too far away from the gear.

joecar

Only if your front cover has no bore in it to hold the CMP sensor (which reads the 1x signal from the 1x sprocket).

chrisfrost

iTrader: (8)

i believe also the 2 outside wires of the 3 cam sensor wires need to be switched , 1 to 3 and 3 to 1 in the harness .

axld

The Camshaft sensor determines which cylinder is firing to establish injector synchronization and coil firing sequence in DIS systems. Crankshaft sensors set ignition timing, supply the RPM signal, and determine engine speed.

12Steve

So is there a specific camshaft sensor for a race engine or are they all stock.