Thread: headers difference

stock headers are the same regardless if its supercharged or not? as in the s/c engine uses the same headers as the n/a engine

That is correct as far as I know.

I have one set of each and they look to be completly identical.

Stock gp's don't have headers they have exhaust mainfolds

they do in fact be the same. and the stock manis hardly flow well enough for the s/c engines at that.

Yes, all 3800 Series II and III exhaust manifolds are all the same.

Actually, the stock manifold is considered to be a header, because of its tubular log style.
That is why, in California you are allowed to put on aftermarket headers that comply to the EPA.
Of course, I do not know of any that comply anyway, so it doesn't matter.

how much of a difference would sd headers make on a na motor with hv3, er rockers, cai?

if you do all that you should get a tune. I did a 91 octane tune and its a huge difference i cant wait till i get a HV3 and PLOG, just got my 2.5'' downpipe(ppl say get 3'' but it was CHEAP) today but wont install it till i got all 3 parts, once I get all 3 parts installed im gonna get a quick retune and should have a nice peppy car untill turbo.