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Dragstrip and Launch Techniques Discussion 1/4 mile, 1/8 mile, launch discussions.

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Old 07-26-2009, 06:15 PM   #1
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12.66@111 Tuned and catback

Hey guys,I've been browsing this website since I ordered my RS/SS2 car back in May. It has 710 miles in the video, I've had the car for less then 2 weeks. First and only pass on the bottle was a 11.80@121 mph with a 2.06 short time. Best 60ft last week was a 1.89, closest I got this week was a 1.99. Yes those are 16 inch wheels in the front.

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Old 07-26-2009, 06:29 PM   #2
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I like that, "Small Dry Shot"! How small was it? 100, 150? Good run. What catback are you running?
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Old 07-26-2009, 08:13 PM   #3
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Around 120, ran through the stock air filter. It's actually just a Magnaflow Muffler cut in where the stock H-pipe was. I deleted the rear mufflers. Still has the 2 resonators in place.
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Old 07-27-2009, 10:18 AM   #4
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I see your doing a burnout in the water box. You're running the stock rear tires? People always say stay out of the water box with the stock tires.
Also, more info on those front wheels (drag wheels?) They look skinny.
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Old 07-27-2009, 10:44 AM   #5
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yeah how'd you get a 16" on the front over those huge calipers? that thing runs good man!! nice runs!
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Old 07-27-2009, 11:16 AM   #6
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Dude....

I'd kick the track guys in the NUTZ if they sprayed MY TIRES down like that just before a run. WTF are they thinking?!?!?

Stay out of the water unless you are running slicks. When you spin your tires in the water, you pick up water in the grooves of the tread and spin them easily. Even after your take off, you won't be able to catch as much traction. Water will still be in the wheel well...

On top of that, you see the guy walk out there and look at the track?...he's checking the track for water left behind from a running AC, oil, and water from your tires. Water also gets thrown up into the wheel well when doing a burn out and it'll drip down onto the track.

I'm sure you probably already know this (and I'm not at all trying to sound like the 'know it all', but I'm just trying to offer up some advice from personal experience.
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Old 07-27-2009, 06:46 PM   #7
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20" tires are hard as hell to smoke with out having water on them. The car wheel hops bad if you do a dry burn out. The water box area was pretty sloppy because they were having a "4.70 oulaw class" race and we ran right behind them. The guy was spraying water down for the next car behind me.

Brace yourself for this, that is a 16" ccw wheel on the front of the car. I took the Brembo brakes off the front and installed 2002 F-body brakes. This is only for the track. They do work just fine, I just saved 110 pounds off the front of the car. Some people dont understand, some do.
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Old 07-27-2009, 06:48 PM   #8
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Originally Posted by 8ty8 ls1 View Post
yeah how'd you get a 16" on the front over those huge calipers? that thing runs good man!! nice runs!
Thank you for the compliments, Next video's, same set up, 12.40's on motor and 11.40's on spray. Same tires.
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Old 07-27-2009, 09:59 PM   #9
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Ballsy...you must be committed to making this thing into a straight 1/4 miler huh?

I understand where your coming from...good luck on your efforts!
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Old 07-27-2009, 10:11 PM   #10
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20" tires are hard as hell to smoke with out having water on them. The car wheel hops bad if you do a dry burn out. The water box area was pretty sloppy because they were having a "4.70 oulaw class" race and we ran right behind them. The guy was spraying water down for the next car behind me.

Brace yourself for this, that is a 16" ccw wheel on the front of the car. I took the Brembo brakes off the front and installed 2002 F-body brakes. This is only for the track. They do work just fine, I just saved 110 pounds off the front of the car. Some people dont understand, some do.
Holy shit 110lbs! Didnt by chance weigh the stock rotors did you?
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Old 07-27-2009, 10:15 PM   #11
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I for one support your efforts. Good work one the weight reduction.
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Old 07-28-2009, 08:50 AM   #12
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The stock rotors weighed in at 25#s, f-body rotors weighed in at 15#s. If you multiply it all by 3 since its rotating weight, I took 330#s of rotating weight off.
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Old 07-28-2009, 09:01 AM   #13
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I just ordered a set of Kooks longtubes for the car on Monday, be 10 days before I can get them. I'd like to make a 10 second pass with the stock manifolds. Just to see if I can do it.......I bought a set of 18" Radials so I think it's possible. I know on motor, I never go to 4th gear. Just by the tires I should be able to drop this thing down in the 12.20 range IF I can get it in to 4th gear. I think 10's are feasable with radials. All I can do is try!

Untouched motor with a stock airbox and paper filter.

Anybody run a 10 second 1/4 mile yet?
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Old 07-28-2009, 10:52 AM   #14
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Very cool.
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Old 07-28-2009, 03:10 PM   #15
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I just ordered a set of Kooks longtubes for the car on Monday, be 10 days before I can get them. I'd like to make a 10 second pass with the stock manifolds. Just to see if I can do it.......I bought a set of 18" Radials so I think it's possible. I know on motor, I never go to 4th gear. Just by the tires I should be able to drop this thing down in the 12.20 range IF I can get it in to 4th gear. I think 10's are feasable with radials. All I can do is try!

Untouched motor with a stock airbox and paper filter.

Anybody run a 10 second 1/4 mile yet?
The best I have seen so far was in the 11.20's. It is around here somewhere.
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Old 07-28-2009, 04:10 PM   #16
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What caused it to fall on its face off the line when you were sprayed? I think your front bumper almost hit the ground it missed so hard. That probably killed close to .5 second off your run.

Nice job with the 16" wheels! So you just took the calipers and rotors from a 4th gen? Did you have to make any modifications to get them to fit? Maybe I'm just old school, but those big back wheels with tiny fronts look killer! I wouldn't want to drive it around the street like that, but for a day at the track you can't beat that look. Doesn't hurt that they help performance. Nice job!
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Old 07-28-2009, 06:14 PM   #17
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We were having problems with the car not hooking as good that night. The previous weekend we had a best 60ft of a 1.89, we had all 20" wheels on it then.

The car would hook, shift to second and wheel hop. They really didnt have it preped to well. When I took off the car bogged real hard, my foot slipped off the gas and then it launched again. I didnt spray it till second gear. If you listen real close in the video, you can hear it when I spray it.

Not to mention, the pass prior to this one, the clutch thought it had seen its last days. These bigs ass wheels kill the clutches if you dont dump it off the line.

Thats one thing we're fighting to not break with the cars around already breaking half shafts and tranny's. Leave around 3500-4000, slip the clutch till it moves and then let it out till it stops bogging. Its hard on the clutch I know, but I would rather replace it then HARD parts like people are breaking. All passes are made with traction controll off.
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Old 07-28-2009, 07:07 PM   #18
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Quote:
Originally Posted by OrangeChevyII View Post
Brace yourself for this, that is a 16" ccw wheel on the front of the car. I took the Brembo brakes off the front and installed 2002 F-body brakes. This is only for the track. They do work just fine, I just saved 110 pounds off the front of the car. Some people dont understand, some do.
that is awesome!

note to self.... use spare set of brakes from the LT1 I have in the parts box....
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Old 07-28-2009, 07:10 PM   #19
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You have to machine the hub down to fit the 02 brake rotor. Any shop that has a brake lathe that will machine drums can do it. I did mine at my shop.
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Old 07-28-2009, 07:49 PM   #20
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You have to machine the hub down to fit the 02 brake rotor. Any shop that has a brake lathe that will machine drums can do it. I did mine at my shop.

good to know. tho my brakes are already ~1" smaller than the LS1 fbodys.

I guess I could pull the "good" brakes off the Z....
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Old 08-16-2009, 05:39 PM   #21
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The only negative thing i see about the smaller tires in the front your losing some of your rollout to help you with reaction times. Not to mention the circumerance of a larger wheel is better because it takes less revolutions to cover more ground than a smaller wheel does. Take a quarter and a penny. Start them at the same point on a table and turn them 10 times. Which one covered more ground with the same number of revolutions. The larger tire did. Thats why drag racers put tall and wide tires on the car for rollout and traction. Now you could put a narrower tire up front to reduce some weight and resistance down the track. But i think the smaller tire is just hindering you. Not to mention for good weight transfer its best to keep the car level. Just some experience through the years. Have fun.
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