86IROC350NY

OK,
my buddy wants to run my camaro when the stuff gets done.
Here's what he has:

New fuel pump, Poston headers, 92 octane chip, exhaust, and i think he intercooled his turbo.

He bought the car from a guy who owns a speed shop in Toms river NJ. i don't know the shop, but he has a yellow Corvette now and a N2Oed blazer that's the official shop car.

He found a timeslip for 12.8 in the glove compartment, probably track prepped/slicks though. The car was bought stock, and the only mods are what was put in. If he is running low 12s now on street tires I am in trouble.

Look at the sig and tell me how i will do. I am thinking I will need a 750 double pumper to get the most out of her. BTW, I still haven't put in the MSD and STB since I wanted to get that in after the head.cam.intake stuf was done.


--Dan

jd13

Right now I think he's got you. It will be pretty close I think. Heads and a cam will put you out front easily though.

Greasemonkey

You have the heads and cam in right? If you do, and he doesn't know what he's doing you'll take him. If he's trying to run pump gas and street tires he's only going to run a mid/high 13. However, if he knows what he's doing and puts in some good gas, a race chip, ups the boost, and gets some slicks he'd be good from anywhere around a mid/high 12.

OneHotV6

If the guy "intercooled" his turbo, then it's not an '87.. they all came with intercoolers. Also, if there was a timeslip for a 12.8 and he's only got a 92 octane chip then it's highly doubtful he's running a stock turbo. Although it's possible but if it's not stock then you won't be out front too easily... maybe off the line but don't be too surprised if you hear something like a jet come flying past you..

fly89gta

iTrader: (1)

Why do you say that? If you need a race chip on a stock turbo to run a 12.8 there is something SERIOUSLY wrong.

Now of course if you're bone stock of course you're not but with minimal mods you certainly don't need race gas to run 12.8s...

MdFormula350

close race, watch out for turbo's!

OneHotV6

What I meant by that is if he's only got a fuel pump, headers, 92 octane chip and exhaust, he'd have to get some good traction to pull off a 12.8 on street tires. I know a stock turbo can do 12's but I doubt it with a 92 octane chip.... even 93 octane is pushing it without risking popping a head gasket with just those few mods.

I guess it all depends on the driver.....

C-Dawg

Well im sure he can do that with the stock Turbo....If he has a boost controller and upped the boost along with whatever else he has then its very possible to run that time on the stock turbo.....

Greasemonkey

First, GN guys usually don't have boost controllers. Its cheaper and easier to make an adjustable wastegate. We've already said that he can easily run 12's with a stock turbo (some people have even hit 11's with them), but not without some more mods or RACE GAS. High octane is what makes the Buicks as fast as they are (either that or propane/ water/ alcohol injection).

OneHotV6

Most GN's that have boost controllers you'll find at the track.. for the street it's easier to use the adj. wastegate because you can set it for a certain level. My friends who run 10's and 11's with their GN's use them but only at the track..

For a stock turbo it's basically pointless (to me) to use a BC because the most you can squeeze out of a stock turbo is around 21 psi. maybe 22.. and the adj WG can be set for it. Bigger turbo's can hit 30 psi. and the adj wastegate is useless after 21 psi. thus the need for a boost controller.

Plus, where on the street can you hit 25-30 psi of boost unless you are on a highway or desolate road..

Greasemonkey

Yeah, I really stated that wrong. Most of the guys I've talked to (including me ) just use the adjustable wastegate. Yeah, with a larger turbo the higher boost makes more sense. After what, 21-22 psi the stock turbo's just blowing hot air. Makes more sense to run more timing at that level. Man, I really need to get out and work on that thing...

86IROC350NY

I just remember him saying something about an intercooler. maybe he was describing something to me. Oh well.

I heard you can make mis 12s with a bone stock 87 GN. If you got slicks, take the hood, sway bar, trunk carpet off. And ice down the intake. So basically track prepping, and a good driver. The prev owner owned his own speed shop, so he probebly tuned the thing really good. The weird thing is that his car ate 2 fuel pumps since he bought it. He installed a new fuel pump just for his trip from AZ to NY. When he got back it fried.
What would cause an engine to go through fuel pumps with every oil change?

But what will a GN run on street tires, and a hood. I hear everyone saying that they can get their GNs into the 12s with minimal mods and 11s are not too far off. Do they mean 12s and 11s on street tires?

If i am gonna brag I am gonna brag that my car goes that fast on street tires...but then again that is because i am too poor now to buy rims and slicks that I can swap off.

Greasemonkey

I've never heard of people taking the hood off to run 12's. A "stock" GN can run 12's. By stock I mean stock turbo/ intercooler/ engine but with upped boost, race chip, slicks. If he's on street tires runnings pump gas it'll be a close race. The key to the Turbo Buicks is race gas and slicks. The ET for the Buicks is all in the launch.
What kind of fuel pump does he have? We have a Walbro 340 in my dads GN and the same pump in my Cutlass with no problems.

OneHotV6

This thread is getting funny... take off the hood.. that's the first time I've heard that one. You can run 11's in a Turbo Buick with all the stock body parts, when you get to the 10's that's when you start looking into the fiberglass hood and other parts.

I would advise going over to turbobuick.com or gnttype.org and do some research before you line up and don't know what to expect.

Don't know why he'd be going through fuel pumps.. sounds like an electrical problem. The pump should be hotwired because the stock wiring is crap.

I would assume with a set of drag radials and a good launch you can hit 11's on the street without any problem.. but don't quote me on that..

This is the one thing I love about these cars, nobody really knows anything about them and think they are pushovers until it's too late.

fly89gta

iTrader: (1)

Boy I can't wait till next spring, should be interesting

devianb

All the GN guy has to do is turn up the boost? That is what I like about turbos, you can add more power without adding more parts.

Greasemonkey

Yeah, but its also a good idea to have a scantool if you do this. Turning the boost up too much without sufficient octane is a bad idea.

OneHotV6

Yeah, you'll be changing head gaskets in no time..!