finn86

I'm curious what kind of difference long tube headers and a exhaust will have on stock '03 6.0L. I already have a afe cold air intake but thats about it. Is it worth doing, or what kind of results can i expect.

GMCtrk

iTrader: (27)

You wont notice any difference below 3000rpms. Above 3000 the first time you punch it you will say "damn." It gives a nice kick in the butt on the top end. But more than anything it's a supporting mod for cam, heads, etc.

Mangled03gmc

iTrader: (95)

Agreed, on this one. Down low you prob won't feel much of a difference, but mid to up top, you will def feel it on stock motor. Get a tune set up for the headers, you will def be able to tell the diff all the way around. Yes I would say it is worth the money..

20inch8lug

i put pacesetter LT's on my 06 hd 6.0 and i feel the difference like they said above mi to top u can def feel it. i got mainly just small bolt ons. i think it was worth it

sonoma43

iTrader: (1)

IMO it's well worth it! some say gains have been seen up to 30rwhp...I think that maybe a little far fetched but 15rwhp isnt out of the question.

budhayes3

iTrader: (19)

Sums it up perfectly

Whippled 496

iTrader: (4)

Wonder if the same can be said for the 8.1L? Reason I ask is because I readline at 4950 . I am hoping to feel the difference in more than just above 3k. I keep hearing people say to tune for your exhaust. What can you tune other than cleaning up the VE table to allow for better breathing? Serious question cause I dont know.

budhayes3

iTrader: (19)

Can't answer the tuning part of your question, but I'd think that with the larger cubes of the 8.1, you'd feel gains in more of the RPM band depending on what size primaries the headers have. Hopefully someone will chime in with some insight as to what else can be adressed with the tune, as I'm curious too...

Whippled 496

iTrader: (4)

Finn86,
I am sorry to jack your thread, but i thought the tuning questions would be pertinant to your thread questions. If you feel otherwise I would be happy to start a new thread about exhaust tuning.

Budhayes,
My primaries are going to be 2".

**EDIT**
And now that i think of it...I am about 99.99% certain i will start an exhaust tuning thread as my the exhaust install date nears..

budhayes3

iTrader: (19)

Those primaries sound pretty healthy and right on par with the amount of cubes you have...I'll bet that you feel an improvement throughout the RPM band