Thread: header install ?'s

well ive been searching and i havnt been able to come up with anything. im about to buy SD header kit. its going on my 97, any tips i should know about or maybe pointed towards a how to thread. as it sits, this kit will be getting rid of my cat so will i need an 02 sim or an extension? my engine mount is shot, would be recommended to replace that first? thanx for any advise.

A lot of people use speed daddys. Upgrade the gaskets and clamps and you'll be good to go. You can weld in an 02 bung if you need it, but I think it comes with one iirc.

For the motor mount, ZZP and WBS have poly mounts.

I hope that gets you in the right direction.

Yeah, the Speed Daddy headers come with front and rear o2 bungs, and a rear o2 plug.

For the motor mount, you can get a solid one (no leaks) from your auto parts store for like $50, and they have a lifetime warranty.

You will need an o2 extension for the front o2 sensor
ZZ Performance

it says 04+ but it works fine on mine.

heres a write-up
http://www.grandprixforums.net/speed...eup-32920.html

get band clamps, and use lots of RTV.
I reused my stock exhaust gaskets, and they sealed fine.

ive done 3 sets of sd headers myself, make sure b4 you put them on u insert the crossover pipe to make sure it goes in right, you need to upgrade to band clamp, i believe 2 3" and i believe 2 2 1/4" band clamps are needed. also small problem may occur with the front o2 sensor, u may need to bend or dent the place on the firewall where the o2 mounts into the header, not alot of room, also i would recommend install of the o2 b4 you mount the header. also obviously you start with the back one first, you can leave the bolts loose or tighten them all the way. you will have to rock that engine forward all the way to get that rear header in place, its better when the heads are off! good luck

thanx for the tips and that thread.

If you can, get the downpipe welded because the slip-joint on my car slipped out and my car was running open downpipe. Luckily i have a friend who welds!

Open downpipe is boss.

I drove around for about a week, open DP, just cause it sounds nice...terrible at anything over like 1000rpm tho...lol

Oh yea i know lol i love the idle but once you hit that gas its like... no.. wtf lol but it shakes the whole damn car!

or you just clamp the dp with regular clamps and it will not come apart.

with headers?! coming from an ls, if it shakes the car while ideling, i have a smile. when you rev it, and neighbors look out their doors thinking its a drag car, i have a smile. when i drive around and the exhaust drowns out the stereo, i have a smile. curious as to how a v6 will sound with headers

well thats with open downpipe lol

this whole forced induction thing and especially anything smaller then a v8 is new to me. this gp is my fourth car and fourth pontiac, the first three were trans ams. the first t/a was a third gen with a 305 and 5 speed, the other two were 4th gen's with 6 speeds

ah, open headers makes you yell to be heard

ya its a deff change from RWD with monster tq. not quite the same neck snap or as fast lol buts fun and interesting. learning something new with this car

give me a 4th gen with an ls and i can take it apart and fix just about anything or pinpoint what is wrong with it, kinda like alot of guys on here with their cars, once you get to know your car you wanna know more

just so you know, these engines sound horrible, the only good noises are cammed lopey idle and s/c whine.

lol, 410 whp 390 wtq, get that and multiply it by 15%, add that total to the original number and get the crank number.