What should I expect in a 1/4

[SHO#7]

I have a 98 GenIII. With just the minor modifications listed below. With a decent reaction time, what should I expect my car to run in a 1/4 mile. If the tires matter I have Michelin Pilot XGT Z4 tires. I would assume that I should brake torque it a little on the line as well. Any help on this would be appreciated, as I have no idea what to set my dial in at.

 

[NECGP]

15.3-15.6

 

[Ian Macoomb]

Depends on the temperature. You could see anywhere from 14.9 to 15.9 or worse. My bet is 15.5.

 

[Funmart6]

What about a virtually stock '97 SHO with a porterized intake?

<small>[ August 07, 2003, 10:26 AM: Message edited by: Funmart6 ]</small>

 

[Ian Macoomb]

Funmart6:
What about a virtually stock '97 SHO with a porterized intake?

Same thing. I don't think that the Porterization will make much of a difference. Heat is your enemy.

 

[SHODWN]

I dont see where these numbers come from.. MOST V8 SHO's Run in the Mid to high 15's there are ALOT of them that wont break the 16's.
Ian, Ron Porter, and a few others have had some better times than most, and the weather doest not effect these cars as much as the V6's and others.

 

[Funmart6]

I thought that with Porterization I would be pulling in cool air from the fender? shrug

 

[stephen newberg]

I agree with Ian. I only ran mine once, and got a 15.1. Of course, it could just be that Canadian SHOs are faster. wink

pax, smn

 

[NECGP]

SHODWN:
I dont see where these numbers come from.. MOST V8 SHO's Run in the Mid to high 15's there are ALOT of them that wont break the 16's.
Ian, Ron Porter, and a few others have had some better times than most, and the weather doest not effect these cars as much as the V6's and others.

I think a lot of that has to do with the launch though. If people don't drive these at the track often then they never really learn how to launch it. I'm still working on it myself. It's totally different from my GP. My best off the nitrous is 15.5 but that was with a 2.4 60' which sucks ass. Should be able to get at least to a 2.2. While my best on nitrous time is 14.5 with a 2.3 60'.

 

[Ian Macoomb]

The launch in a Gen III? I've never had any problems with launching it. Brake torquing hasn't even given me any noticeable difference in ET (RT is better though).

Really a monkey could drive my car down the quarter mile. I just release the brake and slam on the gas (at the same time) and keep it there.

I have however noticed better trap speeds by manually shifting 2-3 and holding it to about 6800 rpm. You have to shift short of the redline because it doesn't respond right away. If you try shifting later than that it will bounce of the rev limiter.

 

[RonPorter]

SHO#7:
I have a 98 GenIII. With just the minor modifications listed below. With a decent reaction time, what should I expect my car to run in a 1/4 mile. If the tires matter I have Michelin Pilot XGT Z4 tires. I would assume that I should brake torque it a little on the line as well. Any help on this would be appreciated, as I have no idea what to set my dial in at.

OK, I've read the responses up to this point, and here's what I recall from back in my "Gen 3" days.

Temperature is the biggie. It is virtually a 0.10 difference for each 10 degrees btween 40F and 90F with no other changes.

The Porterized intake won't show up in 1/4 mile times by itself, but I "porterized" my intake, had the UDP, and turbo mufflers, running in good temps got me into the 14s.

Doing something stupid like having a K&N conical sucking warm air in the engine compartment hurts a lot.

You need some wheelspin to get a good 60' and ET. The beiggest Gen 3 issue is not enough wheelspin. You need 2-3 feet to keep the revs up and not bog. Play with the tire pressure to do this. Go no lower than 35 psi, and go up to 45-50-55 psi in the front to get good wheelspin.

Don't brake-torque, come out just above idle (1,200 rpm or so). Keep a light foot on the brake pedal.

Stage very shallow for best ET.

50-60 psi in the rear tires.

Pull out ALL loose weight.

Practice, Practice, Practice. Ryan Dudek followed my tips and was always 2/10s slower than me. After 75-100 runs in his Gen 3, he picked up those 2/10s just through practice and a lot of runs.

Don't other going to the dragstrip in the summer. We only run prior to May 15th and after September 15th. The colder the temps, the higher the barometer (over 30), and lower humidity (under 50) helps a LOT.

 

[SHOGHOST]

i run consitant 15.7xx but i have increased my reaction time from squat to squat in a half.

 

[SHOGrabber]

I will agree with Ron and say temperture most deffinatly affects your time.
Here are the times my SHO ran this year at the nationals in WI.
The first run of the day was at 10:56 a.m. and it was already hot for the day. Ron and Kirk can back this up.
Here's how it went.

10:56 a.m.-15.936
11:08 a.m.-16.073 (Ron Porter-16.252 Gen 2 MTX)
11:24 a.m.-16.054
11:35 a.m.-16.126 (Ron Porter-17.373 Gen 2 MTX)
11:48 a.m.-16.189
12:01 p.m.-16.205
12:12 p.m.-16.308
Cool off and start eliminations one hour later
1:08 p.m.-15.969 (Got eliminated) Dialed in wrong time at 16.05
Cooled off after eliminations I ran again
2:31 p.m.-15.973
2:43 p.m.-16.033
I guess Ron was so used to the Gen 3 ATX that he forgot how to drive a Gen 2 MTX doh
In Ron's defence he did smoke his clutch on his dry burn out up by the line the first time he ran me. (Or maybe he got all nervous because he was running me and forgot)

<small>[ August 12, 2003, 10:20 AM: Message edited by: Willie Orpurt ]</small>

 

[Ian Macoomb]

You really need to give it more time to cool off in between runs. I gave mine lots of time to cool down and I even pushed it up the staging lanes. Here's my times to compare:

10:57 15.778 @ 87.95
11:10 15.764 @ 89.82 (manual shift 2-3)
11:27 16.090 @ 86.56 (Reka driving, me shotgun)
11:41 16.157 @ 86.16 (same)
13:09 15.583 @ 89.39 (me driving, exhaust cutout after flex-pipe).

The mods I had at were K&N panel, no saxacone breathing hot underhood air, no resonator, no 3rd cat, (and no muffs on the last run). Note that the manual shifting of the 2-3 shift helps with the new exhaust set up. The 3rd and 4th runs were made by my girlfriend with me riding shotgun. Those were her first runs ever and she doesn't even have her license yet.

By tomorrow I should have the ability to by-pass the mufflers at the flip of a switch. That should make for some interesting experimentation at the track.

 

[ZexySho]

Ian Macoomb:

By tomorrow I should have the ability to by-pass the mufflers at the flip of a switch. That should make for some interesting experimentation at the track.

My car lost power using an exhaust bypass to the tune of 2 tenths. Different set-up but interesting nontheless.

Wendell
97 T-red

 

[Ian Macoomb]

ZexySho:

Ian Macoomb:

By tomorrow I should have the ability to by-pass the mufflers at the flip of a switch. That should make for some interesting experimentation at the track.

My car lost power using an exhaust bypass to the tune of 2 tenths. Different set-up but interesting nontheless.

Wendell
97 T-red

Ah but did you open it up mid-track? I ran disconnected off the line against Christian Andretta at the convention. His reaction time was slightly better and he had a better 60' but I reeled him in big time at the end. The trap speed was quite a bit higher. Now if I can open up after 4000 rpms I think I can get the best of both. We shall see.

 

[ZexySho]

[/QUOTE]Ah but did you open it up mid-track? I ran disconnected off the line against Christian Andretta at the convention. His reaction time was slightly better and he had a better 60' but I reeled him in big time at the end. The trap speed was quite a bit higher. Now if I can open up after 4000 rpms I think I can get the best of both. We shall see.[/QUOTE]

No I didn't and I would have to think that would be the optimum set up. I need to find a way to manually open mine at half track and see what happens.