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> Good Quarter Mile Techniques
05on20's
post Nov 6 2009, 04:11 PM
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Well guys, I figure I might try and go to MIR for import vs domestic this weekend if I get a chance. Are there any pointers before I take the truck down the track? I normally drive around on 35psi so I am figuring I should drop it to 30psi. Also, I know burn outs are a no-no on stock trannies and I think break boosting is a no-no also. Any help is much appreciated.


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black00chev
post Nov 6 2009, 04:55 PM
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Damn wish I was goin and my truck was faster lol. Sounds like you got the right idea though, drive around the water box if you can.


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05on20's
post Nov 6 2009, 05:18 PM
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Yea sounds like a good idea just to drive right around the water box.


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brobradh77
post Nov 6 2009, 05:47 PM
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No burnouts but not because its hard on a tranny but because on street tires its counter productive....Stalling up may hurt you because of traction problems...your probably going to have to flutter your gas peddle off the line...ease into it


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black00chev
post Nov 6 2009, 06:22 PM
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Good call Chase on laying into it instead of just nailing it off the line. I know atleast on the street even as slow as this thing is it will roast the tire off the line if i dont lay into it. Been to the track once and did the same thing but not nearly as bad.


--------------------
'00 5.3L Z71 1500... Jason's Garage 150k miles and still purrin' !!
tunned by Black Bear Performance, SLP CAI, Flowmaster cat-back, removed rear lift blocks, black SS 20s and 275/55-20 Pirelli ATRs
Mods to come: LT headers 3" SI/SO dumped, rear end upgrades, trans upgrades, something fun
FUTURE PROJECT: C-10, bagged, LSX block and maybe just a little turbo or s/c...

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TYMBOM
post Nov 6 2009, 06:24 PM
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Go straight and avoid the really hard walls!!! biggrin.gif


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05on20's
post Nov 6 2009, 07:43 PM
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QUOTE (TYMBOM @ Nov 6 2009, 06:24 PM) *
Go straight and avoid the really hard walls!!! biggrin.gif

biggrin.gif I plan on too brotha.


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shadowsniper3006
post Nov 6 2009, 08:25 PM
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QUOTE (brobradh77 @ Nov 6 2009, 04:47 PM) *
because on street tires its counter productive....



i have heard this from many guys but have disagreed everytime. Not coming at you but i am wondering if you can explain why a burn out on street tires is bad. Every truck i have owned i have heated up the tires(even on this awd) and when the tires get hot the rubber gets sticky....when the rubber gets sticky my 60 foot times are better. even on the street if your just messing around when you do a burn out you can see all the gravel sticking to the tires. I'm just wondering what causes a street tire, made of the same rubber although a diff softness, to get worse when heated?

otherwise, i would do a burnout. stage shallow, just enough to light up the second stage light, and mostly i say launch off idle but with a 2 wheel drive you may get better traction loading it up. Loading it up on the line will keep your converter from flashing slighlty higher and may help your traction. keep the wheel as staight as possible any any small adjustment is not the shortest distance between 2 points anymore. Drop tire pressure as needed for traction, the 60 foot time is more important to your et then the top end speed lost by lower tire pressure, to a point.

Brad

This post has been edited by shadowsniper3006: Nov 6 2009, 08:31 PM


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brobradh77
post Nov 6 2009, 11:10 PM
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Street tires are made of a harder rubber than DR's and slicks..Street tires are designed to resist heat there for heating them does nothing but wear them out faster and harden your tires quicker.

This post has been edited by brobradh77: Nov 6 2009, 11:19 PM


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shadowsniper3006
post Nov 6 2009, 11:21 PM
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that is true, but isn't warm rubber stickier then cold rubber. when its winter the tires are cold and hard but in summer the durometer gets softer. from what i have heard the reason you don't want to do a burn out with street tires is once you warm them up and then they cool down the rubber will get harder then it was before, but it should still soften with heat.


--------------------
03 Silverado SS
Volant ram air CAI with ram air tube, ASP underdrive pulley, Zippy PCM tuning, FLP stage 5 trans with sonnax 2nd and 4th gear servo's and billet input/output shafts, TCS 3800 stall, magnaflow dual in dual out muffler, MSD wires, and SS brake lines, TEA stage 2.5 heads, Revolution Raceworks custom ground comp cam, OBX long tubes, centerline rims, dual scan gauge, HPM electric fans, Meziere electric water pump, comp cams tensioner, .040 cometic head gasket, gmpp cts-vr lifters, comp cams push rods, yella terra rockers, 180 SBC stat., hughes flexplate, rear air bags, beltech front shocks, victor jr intake, custom elbow, green top injectors, aeromotive fuel rails, magna fuel reg. x-link, 90mm tbss TB. 12.828 et, best 60' 1.633. dyno'd 464.9 RWHP
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WICKEDOWESIX
post Nov 6 2009, 11:22 PM
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The only way to know what works with "your" truck is to try it out at your track and see what she likes and doesnt like. Good luck man!


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brobradh77
post Nov 6 2009, 11:39 PM
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QUOTE (shadowsniper3006 @ Nov 6 2009, 10:21 PM) *
that is true, but isn't warm rubber stickier then cold rubber. when its winter the tires are cold and hard but in summer the durometer gets softer. from what i have heard the reason you don't want to do a burn out with street tires is once you warm them up and then they cool down the rubber will get harder then it was before, but it should still soften with heat.



Street tires are designed NOT to heat up and smoking them will just make them greasy.


--------------------
12 Second Club!!!


Volant CAI, Blackbear performance Tune, Jerry/Danny transmission, TCS 2600, 22x9.5's, Nitto 420S 305/40/22, 6000k HID's,5-piece Billet grill, shopman bowtie, painted tails w/ blacked out head/parking lights, sunroof, Belltech 2/3 drop, painted calipers, 2 Kicker CVR 10's pushed by a Kicker ZX750.1, Kicker ks components pushed by a kicker zx 350.4, Radix, 218/224 .563/.568 114 LSA Cam, 160* stat, pacesetter Lt's, 90Mm Tb conversion,no cats, corsa sport exhaust w/e-cut out, snow performance meth kit, protected by Autopage, traction bars, and N20 (for just in case :))
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Fireman31
post Nov 8 2009, 07:51 PM
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QUOTE (brobradh77 @ Nov 6 2009, 11:39 PM) *
Street tires are designed NOT to heat up and smoking them will just make them greasy.


iamwithstupid.gif Agreed, heating up street tires is counter productive. I have experimented with this and have found that heating up street tires in the water box causes them to become slimy and will make you "blow the tires off" when you launch more often then not. I know I am late to this as you were probably already at the track, but the best way for you to launch is probably off an idle(partly because of your mods) IMO....


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TYMBOM
post Nov 8 2009, 11:23 PM
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QUOTE (Fireman31 @ Nov 8 2009, 05:51 PM) *
iamwithstupid.gif Agreed, heating up street tires is counter productive. I have experimented with this and have found that heating up street tires in the water box causes them to become slimy and will make you "blow the tires off" when you launch more often then not. I know I am late to this as you were probably already at the track, but the best way for you to launch is probably off an idle(partly because of your mods) IMO....


Agreed.


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