Yes, the stock is around 1750-1850 I believe. I've had some cool discussions with Dave at Triple Edge Performance. I plan to see how 1500 works as a daily driver around town. Should be real nice. The higher stall isn't too necessary with the supercharger. If I decide to go turbo I will go high.

 

I wish I could help with the various questions on Page 6 but I've been so busy at the office I cannot get out to Thorley's shop (which closes at 4 PM here) to do any observing. I'm all for the increases down low; maybe that'll help the driveabilty!

ALSO, with regard to the gains-- the car's tune was not monkeyed with at all; it was run using the same tune I had in it when I gave the car to Thorley. About two weeks before I gave the car to Nick I took 4 degrees of timing out of it as I was picking up some KR I didn't like. So, there might be a little improvement left in it.

 

I cannot post the dyno chart:

"Attachment exceed forum quota by 69 kb." My attachment is only 76 kb!!

 

heres the dyno and pics:

 

:squinting: cant see much (dyno graph)

 

Its like a dream come true

 

All fixed

 

just gotta find $650 now lol

anybody know how these would affect a warranty?

 

warrenty,lol!!! Whats that???

 

that thing that is goin to save me a lot of money when i blow up my trans lol

 

Better have a quick change option back to stock manifolds and everything else.

 

wow so even our simple bolt on mod became hard....not only that but it started out 550$ not its 650$ plus welding and a pina install. Plus its not really a lot of gains in hp, if you look up in the higher rpm range he only gains like 10hp
also most of the gains are where the stall is so we really will only see increases down very low.....

 

so my warranty would go lol

 

don't forget the more you mod the more you'll see from these. Also, as stated tuning wasn't completely optimal.

FYI, LS engines usually see about 20 whp from headers and the gains are exponential as rpms increase.

 

Pair those headers with the CAI, exhausts and tunes that most of us have you would seen nice results I would imagine.

 

So these aren't going to be a bolt on part? It looks like it has to be welded to the factory cat location?

 

Incredible-- it took only a couple of hours to get a snide-*** response of this nature that I knew would be coming. I somehow get the impression you are quite a bit younger than me.

If you are going through the trouble of putting on headers, minor cutting and rewelding a flange should not be a huge issue. If you want true bolt on / easy-to-intall HP, get a 75 HP N20 kit and call it a day! Have you installed headers on an LS1 GTO? That's a PITA as well; better if you have a lift, as you have to undo part of the suspension. Also, $550 was an ESTIMATE; we are looking at a difference of 18%, not a bad deal when you consider the work that went into it. Also, I am told the production sets will be bent on a robotic machine; all the stuff you see will be taken off and scanned in 3-D.

Let's get this straight: your GXP is not a race car: it's cam is small, DOD is intrusive, etc....basically, we have a jewel of a motor being held hostage in a WrongWD chassis. Have you looked at our cam specs and the lift numbers? Likely not. Also, the tune was not changed "before" or "after" header install, plus I had taken timing out of the vehicle (I think it's at 26, if memory serves), as mentioned in my previous post.

To other readers, sorry for the rant. I offered up my vehicle only after 1cleanSS (the other local owner) unfortunately had to back out, and I have been juggling my marketing schedule as my Impala is the car I use to see my clients.

 

I read in an old thread on here that anything more than a CAI and most dealers will void it on powertrain. That being said, I'm biting the bullet and getting mine built in a few months so i don't have to worry about it any more.

 

But GTO headers bolt on though, right? For that kind of R&D I didn't think a bolt on part would be an issue to make. But that's what we got, better than what we had before!

 

I just realized this part of your post. Why so defensive? Not everyone is going to be a believer. I thought that there would be higher gains also. Are you planning on puttin her on the dyno after you get tuned for 'post' headers?