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01-02-2011
so i am gunna try and get an intercooler from ZZP when i get my tax return my main question is i was cosidering getting a pully as well how small of a pully can i put on with just an intercooler on my car. other than a cold air intake i havent done anything to my 98 grand prix GTP. i have herd mixed things on this such as i can go as small as 3.0 with just the intercooler installed.
01-02-2011
With just a intake? You need ATLEAST a down pipe 3.3 IMO. With headers- 3.0/2.9
This is assuming its a s2 IC
Other things you really should do other then The intercooler is ported LIM and blower, 104 autolite spark plugs,and headers.
Last edited by 01gpgt01; 01-02-2011 at 10:39 AM.
http://www.streetfire.net/video/2001...ynp_208097.htm
01-02-2011
if you do go down a size, only go to a 3.4... The intercooler is a great investment, I have the S2 from zzp and love it (dont get the short stack its a waste of money). But with just an IC, its really not gonna do a whole lot for your car until you get some flow mods (exhaust, cam, rockers, etc...) so I wouldn go that small in pulley size...
and another thing you should get is a scan gauge now in case your IC pump fails so you can see the KR....
01-02-2011
so would you all recomend getting the flow mods or basicly what i can with the money instead of getting the IC right now? this is all assuming i do get enouigh money from my return lol
01-02-2011
As long as it is tuned right...who the hell needz flow mods.
Buddy of mine is running a 3.2" knock free on his '97 with just a short stack...and all he has for supporting mods is a open cone and a catless 3" DP...everything else on that car is BONE STOCK. Just keep in mind GM had a intercooler on the concept GPX back in '96 and it ran down the F-Body with ease at the time...factory pulley was a 3.0" or 3.1"... http://image.motortrend.com/f/161598...GPX+engine.jpg
Note the braided lines above the belt for the IC lines...
If I were you...I'd get the stage 2 intercooler and headers...you'd be set. Also...is it a 97-03 or '04+? Because that'll make a huge difference on the pulley you'll be running. Anything lower than a 3.2" on a 97-03 car you're going to be needing injectors...intercooler and headers on a '04+ car is a 3.4"...done.
01-02-2011
KR just tells half the story. Whats his afr whats his timing. Just saying no Kr is very misleading. If you have zero KR and a afr of 10.2 and 13 degrees WOT timing...Then running that pulley size isnt what you want. You want to run the pulley that you can run 11.6-11.8 afr with Atleast 17 degrees timing with little to no KR. Intercooled. Non intercooled id shoot for 11.3-11.5Originally Posted by bluegtp91
But Each car is different. And your gonna have to scan and see where your at
Last edited by 01gpgt01; 01-02-2011 at 01:02 PM.
http://www.streetfire.net/video/2001...ynp_208097.htm
01-02-2011
Why didnt GM go ahead with the stock intercooled l67 idea? That probably would have solved the whole knock issue.
01-02-2011
Money.
01-02-2011
I was refering to just having the IC with the stock tune... of course with a tune you can get a little more out of it...
oh and stock injectors are good till a 3.1
01-02-2011
I was hitting 105 percent injector duty cycle on a 3.4 pully with high compression lol. Id imagine a 3.1 on a gtp would be well into the 100's as well
http://www.streetfire.net/video/2001...ynp_208097.htm
01-02-2011
I hope you're not talking about Christian....
01-03-2011
Hope your jokin...furealzoh and stock injectors are good till a 3.1
I am...only because I've seen the scans...not saying the car is fast by any means...trust me.
01-03-2011
I don't doubt he is knock free, but I gotta say for an ic'd car I stuck it to him hard with my old 3.4.
01-03-2011
I've theorized that a Gen V is as good or better (temp wise) than an SS IC. Costwise, it's something to mention if money is an issue.
01-03-2011
mines doin just fine...
Last edited by blueguy; 01-04-2011 at 03:14 PM.
01-03-2011
Sooo instead of an intercooler, i could just get a gen v blower instead?
01-03-2011
no. He was saying because the gen v has cooler out let temps, having that with an ssic would be close to having a gen III with a full size.
01-04-2011
Dude, on our write up it says this:
"Also keep in mind that if you do happen to get away with dropping lower than a 3.1”/3.0” pulley, your stock fuel injectors will probably run static (out of fuel) and you’ll need bigger injectors."
By that I also understand that the stock injectors are good enough until a 3.1 pulley.
01-04-2011
Depends on your IDC.
It should be 80% or lower.
01-04-2011
Right Juan...lower than a 3.2" you will start to run static...then again, every car is different. That thread is just a basic guideline...and it needs to be re-done...but it still gives the simple way to mod these cars effectively with the knowledge you need.
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