Pretty much the same camshaft actually if you look at the specs. If you sift through the cam card he sent you, you'll see it has a 206/212 duration, .513/.520 lift and a 115 lobe separation angle. I think the one I suggested for you will still in fact, be a slightly better choice for low end torque output and I assume you had the rep and Comp Cams make quote you custom grind.

You can find the XR259 I told you about on eBay for $380 bucks with free shipping. Custom grinds are at least $400 straight from CompCams in addition to shipping. You'll need new springs, which are $52-54 dollars for the ones you need. So in the end, you'll have a new CompCams camshaft and matching springs for less than his custom grind I'd bet after shipping and then you'll still need springs, all while making slightly more low end torque. Ya can't go wrong. As for how much rear wheel horsepower?....Maybe 265hp 260lb-ft of torque at the rear wheels compared to stock, a measly 235-240hp and 240lb-ft of torque. So you'll change cams and gain maybe peak 20-30hp total, but the biggest improvement will be seen down low and right around the mid range...right where a big lifted truck needs it. If you've noticed also, I have the same camshaft.

Here's where you can get the springs:
http://www.lingenfelter.com/store/12499224.html

And the camshaft (same guy I purchased from):
http://cgi.ebay.com/ebaymotors/COMP-...3286.m20.l1116

 

inchup should i also get a timing chain while i am at it anything else i should change during the cam swap and thank you once again

 

Might as well. Cheap insurance. Here's the one off the LS6, which is a stronger chain than what you currently have.

http://www.sdparts.com/product/12586...mingChain.aspx

I can't think of anything else you'd need to "change" for this swap, but I would plan to find local guys in your area who are good with their laptops. A tune is a must after a camshaft swap.

 

inchup should try the cam or try to get a 6.0 used after seeing the cost of parts and paying to have installed i don't know i know i'm going to do one or the other

 

That's not for me to decide. Figure out what you want, make a plan, and hold firm to it. That's about all I can offer for a suggestion on that one. If you go back and forth between plans all you'll end up with is a more expensive truck than it needs to be.

 

inchup the cam you recommended how would it work in a 6.0 or would you say somethimg different for 6.0

 

It would be an absolute torque monster in a 6.0L down low and have awesome mid range. It would probably die off around 5000 or so in a 6.0L because it's really meant to be an all around cam for a 5.7L. I have had very good luck with a 212/218, .562/.567 on a 112 lsa in a 6.0L LQ4 in my friend's Sierra 1500HD. It makes power everywhere and the torque, holy cow. It can roast all 4 tires on concrete. It was a custom grind cam that I had made when I was going to put a 6.0L in my truck. When I chose the 5.7L route, I put the custom grind into his truck. The 212/218 I just told you about would have the same characteristics in a 6.0L as that XR259 would have in a 4.8/5.3L. Massive low and mid range torque, and it'll pull all the way to red line.

 

who made that cam (212/218, .562/.567 on a 112 lsa )

 

for your application like already said you need down low grunt the 206/212 would most likely be a good choice.

I have the 212/218 low lift on a 114 LSA in a 4.8 and off the line its a dog but ounce i hit about 3000rpm it just wakes the hell up.

If your an auto then you might want to consider a stall even with the smaller cam

 

hey if i tried to use 1.85 roller rocker and the stock cam in the 4.8 wouldn't have the same effect as a small cam