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

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Old 05-31-2013, 08:32 PM   #1726
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Is it strange that the LLT has all the top spots in the "bolt ons" category? I know the LFX can't accept headers by design, but aside from that it's supposed to have more HP out of the box, but why no LFX fast times in the "bolt ons" category?

Debating picking up a v6 to play with, trying to decide between a used LLT car, or wait for a new 2014?
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Old 06-01-2013, 06:26 AM   #1727
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Quote:
Originally Posted by RacnJsn95 View Post
Is it strange that the LLT has all the top spots in the "bolt ons" category? I know the LFX can't accept headers by design, but aside from that it's supposed to have more HP out of the box, but why no LFX fast times in the "bolt ons" category?

Debating picking up a v6 to play with, trying to decide between a used LLT car, or wait for a new 2014?
It's certainly not for lack of trying, that's for sure.

The list seems to suggest a mid-high 13 is possible without a tune and even without DRs/skinnies. Not sure what kind of rocket fuel they were using to do it but I want some.

In the nearly 70 runs I've made in the last year, I haven't done better than a 2.11 60' and a 14.11 1/4 and those two weren't in the same run either. My average 60' in all those runs is 2.25 but lately it's been solid in the 2.1 range. I give the tires a good spin cycle (couple seconds) but not enough to really smoke them and I try to leave at 1k rpm else I tend to slip. I guess I could try cooking the tires better and/or launching at a higher rpm but with the brakes held I can't go any higher than about 1275 anyway.

Alright I'll quit crying now.
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Old 06-01-2013, 06:40 AM   #1728
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It's certainly not for lack of trying, that's for sure.

The list seems to suggest a mid-high 13 is possible without a tune and even without DRs/skinnies. Not sure what kind of rocket fuel they were using to do it but I want some.

In the nearly 70 runs I've made in the last year, I haven't done better than a 2.11 60' and a 14.11 1/4 and those two weren't in the same run either. My average 60' in all those runs is 2.25 but lately it's been solid in the 2.1 range. I give the tires a good spin cycle (couple seconds) but not enough to really smoke them and I try to leave at 1k rpm else I tend to slip. I guess I could try cooking the tires better and/or launching at a higher rpm but with the brakes held I can't go any higher than about 1275 anyway.

Alright I'll quit crying now.

I am guessing the DA is what is killing your time. Along with track prep? for the 60'
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Old 06-03-2013, 10:30 PM   #1729
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Quote:
Originally Posted by RacnJsn95 View Post
Is it strange that the LLT has all the top spots in the "bolt ons" category? I know the LFX can't accept headers by design, but aside from that it's supposed to have more HP out of the box, but why no LFX fast times in the "bolt ons" category?

Debating picking up a v6 to play with, trying to decide between a used LLT car, or wait for a new 2014?
LFX is more tune friendly in my opinion. Love the option of being able to add full length headers to the LLT, but the LFX has more power out of the bag, and adding high flow cats will get your 3/4 of the power LTs would.

Love my LLT, but my hat would have to tip in favor of the LFX. Intake, tune, cats, and exhaust on the LFX should net a solid 35 to 40 or better HP increase. Your looking at over 360 crank HP. Find a used 12 or 13 maybe?

LLT can get you around there, but you'd need more bolt ons, plus the LFX may be more reliable, but not sure about that yet.

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Originally Posted by fsusmithc2 View Post
It's certainly not for lack of trying, that's for sure.

....
Curious to know what your DA is?? I would put money on an LFX car with your mods (and a tune) being able to run well into the 13s in good air and a decent 60 foot.
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Old 06-04-2013, 10:14 AM   #1730
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Now that I have some new goodies I'm ready to hit the track again. Too bad my "goodies" are for auto-x and not 1/4 mi, haha
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Old 06-04-2013, 02:08 PM   #1731
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Now that I have some new goodies I'm ready to hit the track again. Too bad my "goodies" are for auto-x and not 1/4 mi, haha
I know what you mean, that's what my build has been focused around since day one. Unfortunately I was never really able to autocross until recently, and boy is it WAY more fun than the 1/4.
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Old 06-09-2013, 08:24 PM   #1732
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Tires used on the pass: Pirelli P-Zeros (stock SS sizes)
Performance Mods (if any): CAI Inc cold air intake, Flowmaster AT axle back exhaust, Trifecta tune
Transmission:A6 (with Trifecta tune)
Category submitted for: Bolt-ons
R/T.......... .3543 (nap time)
60'............. 2.1558
330'........... 6.2256
660'........... 9.5271
660’ mph... 73.81
1000'.......... 12.3535
1320'.......... 14.7203
1320’ mph… 94.52
Name of the track: Kansas International Dragway
Date of pass: 6/8/2013
Weather conditions 80* DA ~3500
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Old 06-10-2013, 03:59 PM   #1733
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DANG that DA blooooooooooooows lol.
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Old 06-10-2013, 06:04 PM   #1734
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DANG that DA blooooooooooooows lol.
Yeah... warm & sticky... which makes me all that more happy with the times. Better than I though it would do.
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Old 06-12-2013, 10:55 AM   #1735
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Hey, I found this website: the calculations seem fairly reasonable. I went with the more conservative number of 275 hp as determined by weight and ET (I only used curb weight).

http://www.wallaceracing.com/et-hp-mph.php

Edit: I used BMoreCam's 13.6 time and the curb weight of 3750 and the estimated HP was 290, which is what he has on the dyno thread. Pretty damn good!
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Old 06-16-2013, 10:42 PM   #1736
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First time at the quarter mile and ive only been to the track twice. I did this during the 3rd Annual Camaros for Heros event in Fayetteville NC and had a blast.

Tires used on the pass: Stock LS BFG's
Performance Mods (if any): C.A.I. w/scoop, VMAX PTB, MGW Shifter
Transmission: Manual
Category submitted for: Bolt-On's
R/T.......... .9844
60'............. 2.3157
330'........... 6.3538
660'........... 9.6269
660’ mph... 74.57
1000'.......... none
1320'.......... 14.8309
1320’ mph… 95.66
Name of the track: Fayetteville Motorsports Park
Date of pass: 6/15/2013
Weather conditions: 95 F, 20% Humidity, 29.73 in-Hg
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Old 06-23-2013, 10:27 AM   #1737
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Went to the track yesterday and made a bunch of passes. The fastest I ran was a 14.1158@97.45 with a 60ft. of 2.079. The D.A was 1711 and when corrected the time is 13.844@99.404. I know not fast enough for the top 10 but thought I would post up. Mods are what is mentioned in my sig.

Here is the slip.
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Old 06-23-2013, 05:40 PM   #1738
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Nice Job. Hard to run fast in the higher DA.
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Old 06-24-2013, 09:49 PM   #1739
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Not a bad 60" if those are normal street tires. You drop the psi?

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Nice Job. Hard to run fast in the higher DA.
Oh God tell me about it. I rarely ran below 1,000 DA in Houston. Think it was a little before 2,100 before
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Old 06-25-2013, 03:53 AM   #1740
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2012 2LS Camaro Imperial Blue Metallic
Tires used on the pass: stock
Transmission: Automaic
Category submitted for:
R/T........ .621
60'.........2.190
330'.......6.249
1000'.....12.377
1/4........14.796 @93.23 MPH
Name of the track: Sonoma Raceway
Date of pass: may 29, 2012
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Old 06-25-2013, 08:10 AM   #1741
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Originally Posted by chevysailorLS View Post
2012 2LS Camaro Imperial Blue Metallic
Tires used on the pass: stock
Transmission: Automaic
Category submitted for:
R/T........ .621
60'.........2.190
330'.......6.249
1000'.....12.377
1/4........14.796 @93.23 MPH
Name of the track: Sonoma Raceway
Date of pass: may 29, 2012
What was the DA like? If it was high then that's a fantastic run for a 2LS. We may need a separate list for you guys given your gearing.
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Old 06-25-2013, 09:12 AM   #1742
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Nice Job. Hard to run fast in the higher DA.
I rarely track DA but I probably should add it to my stats sheet where I log my runs. I'm sure I've hit less than a 14.0 with DA correction at some point. Would be nice if the track system could look up or calculate the DA and put it on the slip for you. Or there's also those portable weather station/DA calculator things too I suppose.

I know the heat is affecting me for sure. What was heading into deep 14.2 territory for me in late winter, early spring, has now settled back down into the 14.3 range. I'll take it as long as I can stay consistant.
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Old 06-25-2013, 09:48 AM   #1743
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I rarely track DA but I probably should add it to my stats sheet where I log my runs. I'm sure I've hit less than a 14.0 with DA correction at some point. Would be nice if the track system could look up or calculate the DA and put it on the slip for you. Or there's also those portable weather station/DA calculator things too I suppose.

I know the heat is affecting me for sure. What was heading into deep 14.2 territory for me in late winter, early spring, has now settled back down into the 14.3 range. I'll take it as long as I can stay consistant.

When I get home from the day at the track. I look up the DA on dragtimes.com. I add this information to my spreadsheet. Then run the DA calculator to my fast pass of the day. I always just want to know what if.........
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Old 06-25-2013, 09:56 AM   #1744
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I don't even wait until I get home. I just use my phone. Lol
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Old 06-25-2013, 10:30 AM   #1745
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Old 06-25-2013, 03:59 PM   #1746
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Baylor that 2.0 60ft was on street tires with the pressure at 40psi haha .


So if people ask me what my car runs do I say the corrected time taking into account D.A or whatever my physically fastest time is? I always get confused with that.
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Old 06-25-2013, 06:52 PM   #1747
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I have always been told that talking DA is like talking smack. Just use that so you know what you can do when you have great air. Otherwise just talk what it can do and mention it was a really warm day. If you can get out to a track that is closer to sea level and run on a 40 - 55 degree day you will have some good DA.

Best DA I have run in to date was -871. Worse DA was 1822.
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Old 06-27-2013, 03:03 PM   #1748
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Baylor that 2.0 60ft was on street tires with the pressure at 40psi haha .


So if people ask me what my car runs do I say the corrected time taking into account D.A or whatever my physically fastest time is? I always get confused with that.
oh wow, you could have dropped that psi A LOT lol.

IMO whatever your time slip says, that is what you ran. Which is why I'm jealous of those guys that run in negative or close to 0 DA..
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Old 06-28-2013, 08:03 PM   #1749
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I thought about it but I wouldn't have a way to bring it back up before I left the track, although I am pretty sure there is a gas station close that I could always fill it up at. Once I get some trailing arms and make a few passes with those I'll start messing with the tire pressure to see what gives me the best 60ft. I would invest in some DRs but i rarely go to the track.
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Old 06-28-2013, 10:00 PM   #1750
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I thought about it but I wouldn't have a way to bring it back up before I left the track, although I am pretty sure there is a gas station close that I could always fill it up at. Once I get some trailing arms and make a few passes with those I'll start messing with the tire pressure to see what gives me the best 60ft. I would invest in some DRs but i rarely go to the track.
You can drive around with low PSI for a bit its not a big deal, just dont hit any serious bumps or potholes.
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