Drag Racing Technique Improve your track times

where in the 12's?

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Old Jul 28, 2007 | 07:58 PM
  #1  
GoFast908Z's Avatar
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where in the 12's?

I have a grudge match coming up and I was wondering what you experts think my car car run. I know it should hit 12s, but where in the 12s?

My last time at the track i had some major problems: fouled O2 sensor, fouled knock sensor, 5 wires running over 1k ohms, 1 wire totally dead (runnin on 7 cylinders), and a Rock-on Transmission that was slipping at the 2-3 shift, also had 2.73 gears. With all those problems i cut a 1.92 60' and a 13.1 @103.9

Now everthing is fixed. And my mods:
Power: MTI clear lid w/K&N, SLP CAI, LS6 Valve Springs, Manley 4130 Chromoly Pushrods, Jet Hot LTs, Dr. Gas X-pipe, no cats, Dynomax 12" Bullets, all 3" piping, Walbro 255 lph fuel pump, ASP Underdrive Pulley, tune
Transmission/Driveline: PerformaBuilt Stage 1 4L60E, 3.42 gears, Vigilante 3000 torque convertor and Dual B&M 24K transmission coolers
Suspension: BMR adjustable torque arm, BMR Boxed Subframes, BMR Xtreme STB, BMR lower control arms, BMR adjustable panhard bar, BMR 1" drop springs, Revalved Bilsteins from Strano Performance, Trak-Tec relocation brackets
Wheels: SS chrome 10 spokes, rear wheels custom cut and widened by Weldcraft Wheels to 17x11" with 315/35/17 out back.


How deep in the 12's should I get?


I'm also going up against a couple friends who think they will walk me. What do you think the outcome will be? And what times do you think their cars are capable of?

car 1: 00' Formula, A4 2.73,
Power: K&N Filter, LS6 intake manifold, SLP Loudmouth II, Pacesetter LTs, no cats, magnaflow muffler,
Suspension: Hotchkis springs, Bilstein shocks and Kenny Brown double-diamond subframe connectors
Wheels: 18 inch Z06 Chrome Wheels, BF Goodrich KDW2



car 2: 00' SS, A4 3.23,
Power: SLP Lid, K&N filter, SLP smooth bellows, SLP Y-pipe, SLP Loudmouth, Ported LS6 intake, Ported TB
Suspension: Eiback Prok Kit with custom Bilstein shocks.
Old Jul 28, 2007 | 08:33 PM
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AL SS590 M6's Avatar
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If yoiu put a sticky tire on you could run bottom 12s. On street tires, mid 12s.

either of the other cars will be half a second behind you.
Old Jul 28, 2007 | 08:46 PM
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What tires are the 315s? Got stickys for the track?
Old Jul 28, 2007 | 09:17 PM
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Unfortunately I don't have any slicks to use, but these are pretty sticky, so I hope i can best the 1.92 i got with my old 275 nitto 555s (not 555r).

They are Goodyear Eagle F1 GSD3

Old Jul 29, 2007 | 09:05 AM
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u need some ET Street Radials... then u'd be good to go...u can find em for $170 a tire
Old Jul 29, 2007 | 02:58 PM
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ok, but what about my current setup. I can't run any sticky tires right now, regardless of their price.
Old Jul 30, 2007 | 12:55 PM
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Hard to say. Who knows what the weather will be like and if you can be consistent off the line. Good luck though.
Old Jul 30, 2007 | 01:01 PM
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I don't know about the elevation, but its a Sacramento Raceway in CA. So its gonna be hot, at least in the 90's.

I used to be pretty consistent in the past.
Old Jul 30, 2007 | 03:30 PM
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ur gonna spin em like crazy with out stickys
Old Jul 30, 2007 | 04:12 PM
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You really cannot quantify your earlier results with so many problem points to factor. I do know that a 1.9 sixty foot time and a trap of 103 often ET around 13.1-13.2 and if your tranny isn't slipping until you pull second and you didn't spin the tires the sixty foot time may be about correct. Beyond that I have no idea but I would not expect to be overly deep into the 12s. If you take a wild guess at similiar conditions and figure the transmission hurt you by 2 tenths and 2-3 mph, then I see 12.6-12.7 in your future, if you can hook up.

Maybe you can borrow some tires to see what will happen?
Old Aug 2, 2007 | 01:45 AM
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Youre ET would be alot better with 3.73's instead of the 3.42's. But with your mods you shouldnt have any problems with the other cars, depending on driver ability. I would guess 12.7-12.8.

Do you have a pic of your car from the back? Those 315's look pretty wicked.
Old Aug 2, 2007 | 07:48 AM
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Originally Posted by IdahoLT1
Youre ET would be alot better with 3.73's instead of the 3.42's.

Not necessarily true with an A4 LS1 car with a good torque converter. I went from 3.42s to 4.10s and gained very little et (less than a tenth) and lost some MPH.




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