http://gmhightechperformance.com/tech/0505htp_truck/

 

Just bought the magazine. Good write up. I was kind of intrigued with the chambered exhaust. I was not aware there was one out for our trucks.

 

Thanks for the link

It does go to show why I am not too keen on LTs and full catbacks unless you have a big mods that require them like a beefy cam, blower etc.

 

What did you guys think about the dyno #'s from the headers??? Me and CRAZYCUTER4.8 have been talking about them alot!

 

Thanks for picking up the magazine guys.
While the dyno results were modest, the gains were across the curve in both torque and hp and were in line with what Stainlessworks told me to expect. Keep in mind the truck is a 4wd so the parasitic losses are probably slightly higher than a 2wd. Also keep in mind I had to switch dynos so the results may have actually been lower or higher depending on the difference in dynos, but I would guess they are fairly accurate as both runs were on identical dynojet setups.
Ideally I would have baseline dynoed, tuned, and then installed headers and dynoed again followed by another tune to see the true potential of the headers.
Stainlessworks told me they have found the stock tune really holds back the gains. I should be running a Nelson tune within the week and dynoing shortly thereafter. I will let you guys know what I find.

 

how much are these headers and exhaust? need more info on the company dangit. i posted two threads a while back and no one told me nuttin.

 

You can start with www.stainlessworks.net. They just updated thier web site, so you will probably have to give them a call.
I will give them a call and post the exact price tomorrow.

John

 

Just got off the phone with Stainlessworks

Stainlessworks Cat-Back 699.00

Stainlessworks Long Tubes Prices
Headers Only 699.00
Headers and Y-Pipe without Cat 899.00
Headers, Y-Pipe, and Randeom Tech cats 1199.00

 

Thanks alot John, thats some pretty pricey stuff.

 

From Talking with them I gathered;

4.8, 5.3 Headers only= CT0305
With Off road y-pipe = CT0305OR
With High Flow Cat Pipe = CT0305CAT

As far as the 6.0 Dual cat pipes go they only make a sytem for the H2.
I'm not sure if it will fit a regular k1500 6.0 frame(Silverado SS, Sierra Denali, Yukon Denali)

I would like to Try a Set to see if it will fit the reg K1500 Frame.

Pricey or not,There 304 like the Dynatechs and offer a 304 off road pipe.