getting ready to do a cam swap and was wondering what the big advantage was to getting an adjustable timing set vs. just getting an ls2 timing chain? is it really worth it to spend that extra money for the adjustable set?

 

cams can be off the mark by up to 7*. If you want the most power out of your cam, you will degree it. But once you degree it and know you need to advance X*, you can't advance or retard the cam unless you have an adjustable timing set.

 

As stated an adjustable set is only needed if you are going to properly degree the cam. If you are putting it in straight up (dot to dot) use the stock setup.

 

Adjustable timing sets are pretty much a must IMO when you switch to a cam setup. That way you can always set your cam ICL to where you want it to be in order to obtain the desired valve events. Is it needed, no. But if you planned and specd out a setup then you might as well ensure it is installed like you planned. Highly worth it IMO.

 

Does anyone make an adjustable non-double roller setup?

 

cloyes and comp make single adjustables.

 

http://www.sdparts.com/product/SD714...gleRowLS1.aspx
I put that one on when doing the heads & cam recently. The description on the site is rather poor but it is adjustable (you can see the marks in the picture). I set my cam +2 with that set.

 

whats the advantage of double roller over single roller?

 

less chance of it slipping and its stronger

 

can't the timing be adjusted in a tune though? so that would make the adustable timing set pointless wouldn't it?

 

its not exactly the same

 

NO, ignition timing and cam timing are 2 different things. The ignition timing can be altered through the tune, cam timing can not (at least not in an LS1/LS2/LS6).

 

As stated above, the ignition timing (when the spark plug is told to spark) can be adjusted during tuning.

The timing of valve events can only be adjusted by advancing or retarding the cam with an adjustable timing set.

 

You are thinking of 2 different things. Ignition spark timing can be controlled via tuning, cam timing is purely mechanical and is changed via the timing gear set.

 

oh thank you for clearing that up.