I would go with this:

http://www.engpwrsys.com/index.php?a...od&productId=4

I also purchased a cam from this company. The owner is the guy who designed all of Thunder Racing's cams. He's been doing this for many years and knows what does and does not work (his words).

 

Ill check it out

 

yep thats the same as thunders oldman cam
that was my other choice but not a fan of all the lift with the stock heads
If i had ported heads definately woulda bought it

 

i have a buddy with a 220/220 on 114, and he says he likes it a lot! pulls really hard

 

I ran a 2001 ls6 cam and loved it. She wasnt a dyno queen but ran quicker times then trucks puttin down 40rwhp more. Got great gas milege and had a nice sound at idle (stock idle speed and program). Pulled from 2700-6000 so it was pleasent to dirve!

 

me too

 

Where is the cheapest place to find the yellow ls6 springs and pushrods for the 212/218 im about ready for the install!

 

Here are the springs.
http://sdparts.com/details/gm-perfor...parts/12499224
Here is the cam.
http://speed-eng.com/store/advanced_...7a91b6&x=0&y=0