jadaven

iTrader: (1)

I would do headers. You could think about the type of cam you want to put in it. I would think that would give you more options if you wanted to go big. Too big of a cam and you could have to do both at the same time.

I'm a cheapskate though.....

Preston129

iTrader: (3)

My vote for headers first. Too restrictive of a system and it'll hurt performance of a cammed motor. Depending on cam size of course.

Cooder5.3

I have heaaders but I don't have my cam yet. But wouldn't it be wise to get the headers first bc it will help get the exhaust out and the cam will be putting more air in. I think the gains would be more noticable this way.

Bumpers

iTrader: (10)

Headers def. Do all supporting mods first then you will get the most out of it

BigMikeGXP

Headers

I did cam first and barely felt anything until I did longtubes.

05gmcsierra

iTrader: (3)

i would do headers first if you cant to get the most out of your cam..

supercharged680

iTrader: (1)

headers.. get the flow going.. so that u will feel the gains with the cam like i did with the sierra.. i installed a cam and felt absolutely no difference.. installing the cam and everything went to a waste... i would buy pacesetters from texas speed.. just my 02

2007chevy5.3l

iTrader: (21)

I did headers first, still looking for a cam

Low_LSX

iTrader: (33)

1st Converter
2nd Cam
3rd headers

IMO.

marovetsm

iTrader: (24)

I would say headers first, then cam. If you plan on getting a cam relatively soon you could do Long tubes and run them untuned while you're waiting the cam then get it all tuned at once and not have to get 2 separate tunes saving you some cash. Thats what Im in the middle of doing but then again its not my daily driver and sees maybe 10mi a week right now. Just my 2 cents.