will the 2.8 pacesetter headers work on my 3.1L RS. is there any modification that i have to do?

yes and yes

what modifications have to be done?

Search. It's in there. Everywhere.

I know that these repetitive questions get a little old......but reply's like this is why there are so many unhelpful threads when you search.

Of the top of my head....The 3.1 AIR system does not hook up 2.8 headers. So if you have emission testing in your area, your car might not pass. You could probably pass the sniffer test but not the visual.

You would rather us give the information every single time and end up answering the same question every other thread? Seems like a waste of time to me. Why write a book about bicycles when the information you would put in is already in at least two other books, in the exact same manner, all of which are readily available?

Because by the time you find what you are looking for you are on page 3 of the search results. I know that it gets repetitive and annoying, but if the same questions keep getting asked and no one feels the need to look at the stickies...why keep putting useless threads into the forum?

These will come up in a search...and wont help anyone. <---Thats all I'm saying.

but you've gotta admit, the pacesetter headers question gets asked about once a week lmao

forkvoid is right that the information is on the site, however Grimmcs is also correct that you have to do a lot of searching to find the info.

In answer to the original question, I just finished installing my Pacesetter headers on my 1989 Firebird. I stroked the 2.8L so now have a 3.1 - so yes, the headers do install. Regarding any mods, no I didn't have to do any. The instructions from Pacesetter suck. Here is how I did it (by myself!! and it took about 45 min.). I should also mention that my car has the WC 5-speed tranny and AIR system.

1. Bolt on both headers,
2. Connect the y-pipe on the drivers side (support the free end with a floor
jack or hydraulic jack) and tighten!
3. Now, slip on a muffler clamp and then the passenger side of the y-pipe
(and gasket). In my case, two of the bolt holes were off by 1/2"
approximately. Apply a little pressure with a small pry bar (not a lot
required - so be careful, especially if you went with the ceramic headers
like I did).
4. The holes will line up so you can get the bolts in (drop down from the top
of course) and put on the nuts. Release the pressure from the pry bar
and tighten the bolts. The flanges will slowly begin to line up.
5. Have a beverage, slap yourself on the back and enjoy!!

The air system must be removed as in my case there is no clearance from the back end of the AIR pump to get under the headers. Also the piping from the pump to the catalytic converter is right up against the headers.

Hope this helps.

Gary.

Great info, I had noy been able to find this either. Just alot a threads that said seach for it... This gets asked so much I almost think it'd be worth it to sticky it, but thats not my place.

Now if I could just find a place to buy these headers I'd be in business..

It would only work if most new people would read the stickies.

You can get them at summitracing.com

Just a couple of other thoughts come to mind regarding the header install.

I should have mentioned that if you are deleting the air pump, and obviously the pulley from the system, you can either go with the AIR pump delete pulley or you can change the serpentine belt. Use Dayco part number 5060825 belt (no AIR Pump, no A/C). The routing diagram can be found on the Dayco website:

http://www.mvreader.com/multiview/da...uto&category=2

You also may or may not need to extend the wire for the O2 sensor, depending on your harness.

On my 1986 camaro w/2.8, when I installed the headers the car ran poorly until I installed a heated oxygen sensor. If you do a search you can find the details but the recommended one is for a 93 s-10 w/4.3.

Now, from what I understand, not everyone who installed headers has done this but it completely changed the car when I did it. Maybe it is ecm specific but I do not know which ecm I have.

Also, the car will run richer with headers.

I thought about that.

I guess it depends on how far the O2 sensor is from the collector. In my case, the position on the stock Y-pipe was similar to the position on the Pacesetter Y-pipe.

So, for the time being, I'll stay with the stock O2 sensor and maybe down the road, try the heated one.

One small mod to be done for those with a 5-speed. This is similar to those guys with V-8 5-speeds. The hydraulic hose between the clutch master and slave cylinders is very close to the headers (about 1/2 inch in my case) and the heat from the headers will eventually cause a leak. Ask me how I know . Anyway, from the threads on this site, you can swap in a T56 hydraulic assembly (I believe TPIS sells one for $165 that is pre-bled), or from the thread below, have a longer line fabricated and then increase the clearance from the headers.

http://www.thirdgen.org/techboard/tr...utch+hydraulic (hydraulic clutch line?)

This plus the above, should pretty much cover anything and everything about Pacesetter headers.

Gary.

I have these on my 2.8.

Do yourself a favor tho - BUY NEW HEADER GASKETS!! The ones given with these headers don't last that long.

Good point rsrsrs.

I forgot when I did the build on the engine that I used Felpro gaskets for the headers. They fit great and are indeed light-years better than the folded "cardboard" that came with the headers.

I have a set of these and I'm parting my car out and getting a gta so I don't think they will fit. I even bought the felpro gaskets, the ones it came with were, no joke a piece of weird cardboard while the felpros are almost made of metal. But if anyone would like the headers and gaskets let me know I paid 295$ and it's all still in the packaging make me an offer.

I have a set of headers and good gaskets for sale check out my thread or message me

Wish I had the $ for them, always wanted headers. It'll probably be late fall before I can resume work on the bird..

Dose anybody know if headers off of a 231 (3.8) Buick will fit the 2.8. I searched google and found nothing and I can get a set of headers for $15.

No.

how much more hp did u guys get from the pacesetter headers on ur 2.8's?