Headers are they worth it? [Archive] - GrandAmGT.com Forum

PDA

View Full Version : Headers are they worth it?


Bigfoot
06-12-2008, 01:18 PM
Im looking into doing the headers on my car and I want to know how difficult/ time consuming they are?

notsoaveragej0e
06-12-2008, 01:26 PM
Depends where you're going with the car, and how skilled you are. Because the second set of headers are on the back of the engine next to the firewall, they are somewhat of a bish to remove and what not... also, consider the cost (probably $900?) relative to your future plans (are you staying NA or going FI? Tuned? Any other engine mods?) and the gains you want/will get with just headers.


Just my .02, but I never had headers on my GA; there are many on here who do though.

Bigfoot
06-12-2008, 01:45 PM
well I plan on just doing simple mods (CAI, Exuast, PCM) and just was wondering what the gains are.

dagenais
06-12-2008, 03:08 PM
I should have some actual numbers in a couple of weeks... I dyno my 03 GT with CAI, Borla Pipes and New Wires - Plugs and I was at 155 hpw and 179 Torque. The average 3.4 at the wheel is AROUND 140 hpw.

Orders and should have installed in a few weeks - headers and high flow cat, 65mm throttle body, porting the the UIM and PCM. Once intstalled I will dyno again and see the gain at the wheels

silvergtjrad
06-12-2008, 04:13 PM
Short answer- yes they are worth the money.

IMO the stock headers were harder to get off than putting the new ones on. You WILL bust up your knuckles, and get pissed a few times in the process of installing though. The install is more frustrating than it is hard. Taking your time, and doing things correctly should take you around 10 hours realisticly. If you have done them before, it wouldnt be unreasonable to knock a set out in about 5 hours.

AaronGTR
06-12-2008, 05:31 PM
Yes, most definitely worth it. Can do it pretty fast if you know what you're doing and are good with tools and have everything you need. It's best to plan on it being an all day project though.

Bigfoot
06-12-2008, 06:13 PM
ive done headers before, but unfortunatly only on my pick up. ive been looking at this for a couple days now and it looks like the front is not gonna give me too much grief but, the back ones look like its gonna kill my back (car accident a few years back).

silvergtjrad
06-12-2008, 06:16 PM
ive done headers before, but unfortunatly only on my pick up. ive been looking at this for a couple days now and it looks like the front is not gonna give me too much grief but, the back ones look like its gonna kill my back (car accident a few years back).

I was literally kneeling on top of my intake manifold for the rear header install

lone_wolf025
06-12-2008, 07:29 PM
I was literally kneeling on top of my intake manifold for the rear header install

Ditto. But I ache just thinking of all the work that was involved...

Its not an easy job at all, and just figuring out the proper order to put all the bolts in just so everything threads in nicely is a huge pain, not to mention trying to get at some of those bolts. Also be prepared to potentially replace the studs, the egr tube coming from the headers, and have the o2 sensor removal tool handy. My car the tube was rusted solid to the old headers so out of necessity I just did an EGR delete. A new hose costs around $60 IIRC...

Supposedly gains are in the range of 15-20 WHP so you'll probably see close to the true rated 175hp at the wheels instead of just the crank.

99gav6
06-12-2008, 08:03 PM
I have a set on mine, but i installed ported heads, and full exhaust along with the headers. It made a world of difference but i couldnt tell you how much was just due to headers. Im sure you would love them though.

DrFabulous
06-13-2008, 08:14 AM
They are completely worth it.

Bigfoot
06-13-2008, 08:33 AM
Sweet! Thanks for the info every one.

drumking1721
06-15-2008, 10:09 AM
I have my headers...gonna be doing them myself i decided....what gaskets,new head bolts will i need to buy?

silvergtjrad
06-15-2008, 10:39 AM
I have my headers...gonna be doing them myself i decided....what gaskets,new head bolts will i need to buy?

They should come with the gaskets, buy a new set of exhaust studs and nuts, a box of bandaids, and a case of beer. Did you buy a downpipe with the headers?

drumking1721
06-15-2008, 11:29 AM
yes sir....they didnt come with gaskets,just the dounut for the junction across the tranny

timberwoof
06-15-2008, 11:45 AM
How's gas mileage with the headers?

iceman
06-15-2008, 12:03 PM
Yes they are worth it, with an accompanying tune.

I had ridiculous false knock retard after headers, but there was no tuning available at the time to get around torque management.. sigh

Install will be much easier if you have someone around that's done it before, so they know how to contort themselves to get to some of the back studs/nuts... if noone is available, it's not that difficult anyways

lvemy3100
06-15-2008, 12:31 PM
yes sir....they didnt come with gaskets,just the dounut for the junction across the tranny

they actually do come with gaskets... you probably threw them out without realizing it... they are inside a piece of cardboard that is folded over and stapled

lone_wolf025
06-15-2008, 01:30 PM
How's gas mileage with the headers?

I've had mine for a few weeks now. Haven't noticed any real change...

drumking1721
06-15-2008, 01:55 PM
fock.......welll where can i get some new ones

lvemy3100
06-15-2008, 02:07 PM
let me check on that one...

drumking1721
06-20-2008, 11:24 AM
any luck?

lvemy3100
06-20-2008, 02:20 PM
damn... I completely forgot..

they are closed till monday so I will call then and find out... for sure this time.. lol

drumking1721
06-20-2008, 02:48 PM
haha alright thanks mark