Am going to be doing the LS9 cam swap into my L9H. With that being said the only question i need reassurance on first is, is swapping valve springs necessary? From what i understand the Part # for the l92 and LSA (cts-v) springs are the same and (LS2/LS3/LS9 springs are same). I may be beating dead horse but would like to get a second opinion so if needed it can all be done at same time while the truck is down.

 

What springs are in the LH9? having a hard time finding them. Regardless you will need minimum LS9 0.570 max lift for the ls9 cam, probably wouldn't hurt to get some 0.600 single springs.

 

I didnt think the truck came with the springs you need... but I could be wrong.

That said... the LS9 cam isnt a great fit for your truck. That cam tends to make the bottom end power feel soggy and the truck youre putting it in will amplify that. DO you have a converter? What RPM do you hit it with the bottle?

 

I just know the LSA and L9H/L92 springs are the same. just wasn't sure if factory springs would work. If i have to leak it down and put longer singles or duals in it i might as well get a bigger lift cam with similar duration and lsa.

 

The LSA has a little baby cam like those other motors. You will need to do a spring swap.

 

Sorry to bring up an old thread, but what does one do to not get a ses light with the removal of the cam phaser when swapping to the 3-bolt ls9 non-vvt cam?

 

disable the setting in the PCM

 

Doing this mod soon, had the parts for months just been waiting on deer season to end so the truck can be down. We need a big thread for this mod, I've seen several 6.2 guys do it. Good luck op.

 

anybody done it yet? how are yall's trucks running?