Slip it or Dump it? M6 guys chime in! - LS1TECH



Slip it or Dump it? M6 guys chime in!

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Old 10-09-2008, 06:13 PM   #1
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Default Slip it or Dump it? M6 guys chime in!

After blowing up my old 10 bolt a few weeks ago I now have a Moser 9 on the way from EPP. My question is launching the car now that I actually can. In the past I always had to "baby" the old 10 bolt on my launches which would only net around a 1.85-1.90 60ft. I am ready to get on down with the 1.60 boys and girls so I can actually see what my car will do in the 1/4 mile. In the past I would always preload the 10 bolt until I felt the car barely move then I would launch the car so at least the drivetrain would have some pressure on all components. Now that I have the Moser 9 with the PST 3.5 DS I want to know the best way to launch the car for the best 1/4 times.
Quick Run Down - roughly 400rwhp street car, MT ET Streets, LS7 clutch kit, LCAs, PHB, SFCs, Adj TA, Moser 9.
Thanks!
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Old 10-09-2008, 06:16 PM   #2
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how do you pre-load the car with a clutch without killing the engine? i just don't see it.
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Old 10-09-2008, 07:09 PM   #3
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Quote:
how do you pre-load the car with a clutch without killing the engine? i just don't see it.
Releasing the clutch just enough to roll and take the slack out of the drivetrain so its not such a sudden shock on all of the driveline components.
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Old 10-09-2008, 07:24 PM   #4
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what are you using for tires? slicks, drag radials, street tires etc?
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Old 10-09-2008, 07:27 PM   #5
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what gears?
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Old 10-09-2008, 08:02 PM   #6
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factory 16x8 five stars, MT ET Streets (26x10.5x16), 411 gears, FYI - I do powershift the car.
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Old 10-09-2008, 09:11 PM   #7
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both pedals to the floor and dump the clutch.
right foot shouldn't leave the floor til you see the win light
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Old 10-09-2008, 10:31 PM   #8
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^^^ thats what i would do
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Old 10-10-2008, 12:09 AM   #9
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We have very similar setups and I was dumping the clutch at around 4800 until I gernaded the Tru Trac in my 9". My LS7 clutch was also starting to slip at the track. My car has a spool and 35 spline axles now and I plan on swapping out the LS7 clutch for a Mcleod twin disk over the winter and dumping it at 5000-5500 next year. BTW my best E.T. and 60' with the LS7 clutch and Tru Trac posi are in my sig.
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Old 10-10-2008, 10:06 AM   #10
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Quote:
Originally Posted by kkslds View Post
Releasing the clutch just enough to roll and take the slack out of the drivetrain so its not such a sudden shock on all of the driveline components.
ok. MAYBE slightly preloading the drivetrain. suspension would be a different story.
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Old 10-10-2008, 10:42 AM   #11
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im coming out at 5500 on a radial ,you cant come out on the limiter with a radial .....in my sig im on a radial at 5500 running a 1.57 60ft and my best is a 1.49 on a radial . i am switching to 28 et drags in the spring and coming out on a 2 step at 6000
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Old 10-10-2008, 10:48 AM   #12
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A set of Bias Ply, and properly set up rear suspension and go off the limiter. I pulled a wheel with ease.
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Old 10-10-2008, 07:15 PM   #13
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Thanks for the replies, I feel I'm really going to have to drive it like I stole it to bust 11s na. So far it seems that the vote goes to Dump It! Any other suggestions on the launch?
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Old 10-10-2008, 07:26 PM   #14
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nah...dump it..its so much more fun and now you don't have to worry about it..as much
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Old 10-10-2008, 09:25 PM   #15
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very last pass on this vid is my car. I don't beleive in slipping the clutch.
http://www.youtube.com/watch?v=LrKPmqVLofk
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Old 10-10-2008, 09:31 PM   #16
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Quote:
Originally Posted by 1BADAIR View Post
very last pass on this vid is my car. I don't beleive in slipping the clutch.
http://www.youtube.com/watch?v=LrKPmqVLofk
What happened? Sleepz ownd me..
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Old 10-10-2008, 09:55 PM   #17
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huh ?
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Old 10-10-2008, 09:58 PM   #18
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Quote:
Originally Posted by 1BADAIR View Post
both pedals to the floor and dump the clutch.
right foot shouldn't leave the floor til you see the win light
I'm with him though not very good at it....
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Old 10-11-2008, 08:52 AM   #19
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Quote:
Originally Posted by 1BADAIR View Post
both pedals to the floor and dump the clutch.
right foot shouldn't leave the floor til you see the win light
I'm with him on that also.
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Old 10-11-2008, 10:05 AM   #20
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When I had my 6 speed I dumped the clutch about 3800 to 4000 and let off the gas and used the clutch on every shift. I wasn't about to blow a tranny to knock a tenth of a second off. My best 60' was a 1.53.
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