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Junior Member
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35 Posts
Discussion Starter #1
Take me through your own personal ¼ mile routine. I would like to know how to get these heavy beasts moving. I myself have an automatic, but wouldn’t mind hearing from the stick guys as well.

How do you launch?

What gear?

T-case? (if applicable)

RPM? (launch & shift)

Other strategies.........?


Thanks BK>
 

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Diesel Kid
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4,580 Posts
I dont ever go down the track, but on the streets i throw it in 4wd, build around 15lbs of boost, hold on and let it rip.
 

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I Eat Rice
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2,155 Posts
works for the track too.
 

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Diesel Kid
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4,580 Posts
How much boost is best for launching?
 

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Ford 6.4 it's just cooler
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673 Posts
before the tire starts A.)hopping or B.)Tires squeal...a lil tire spin isn't terrible

15-18 psi...lower tire pressure to half what the sidewall says...4 wheel drive...hang on
 

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Junior Member
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171 Posts
was at the track yesterday night. 15lbs boost launch 4x4 . did 8.73 @78mph. 1/8 miles. drag about 20 time between 8.73 and 8.85. what mod can i do to my truck to get a little more. i'm running 275 spartan, banks intake dpf delete pipe. do you think a flo-pro 4'' straight pipe can could help a lot??? was the fastest pick-up there yesterday. planning try again in 2 weeks. also i have an aluminium tool box with 250-300 pound of tool in it, do you think it could make a big difference to remove it before drag??? :)
 

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Ford 6.4 it's just cooler
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673 Posts
tool box and spare tire...also 1/4 tank of, at the most, of fuel :happymugs
 

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Senior Member
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568 Posts
...a lil tire spin isn't terrible
A little tire spin stops you from breaking stuff. Imagine the stress put on parts if it dead hooks.

also i have an aluminium tool box with 250-300 pound of tool in it, do you think it could make a big difference to remove it before drag??? :)
THEORETICALLY 100# is supposed to be worth 1/10 sec in the 1/4 mile
 

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Diesel Kid
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4,580 Posts
A little tire spin stops you from breaking stuff. Imagine the stress put on parts if it dead hooks.



THEORETICALLY 100# is supposed to be worth 1/10 sec in the 1/4 mile
Imagine the launch it would have if it did dead hook and didnt break.
 

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I Eat Rice
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2,155 Posts
10% slip is accually faster off the line then a hard hook up. The trick is to manage the slip without burning up the tires.
 

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Ford 6.4 it's just cooler
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673 Posts

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Senior Member
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568 Posts

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Texas Member
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678 Posts
I always run in 4 hi and hold the brake and build up boost to about 18psi
launch as soon as you see the 3rd yellow light
:coal
 

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Texas Member
Joined
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678 Posts
A little tire spin stops you from breaking stuff. Imagine the stress put on parts if it dead hooks.



THEORETICALLY 100# is supposed to be worth 1/10 sec in the 1/4 mile
x2:thumbsup
 

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Junior Member
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80 Posts
I am going to take mine to Milan in the next couple of weeks. I think I am going to make my own 4" DPF delete back pipe out of aluminum to save a bunch of weight and add a little power too.
 

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Diesel Kid
Joined
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4,580 Posts
10% slip is accually faster off the line then a hard hook up. The trick is to manage the slip without burning up the tires.
How exactly do you manage slip? I did a 4wd launch at 15psi with the 210 and noticed a little bit of tread left on the street.
 

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I Eat Rice
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2,155 Posts
It's more revelent with a 2wd set up. Trust me though. If your going to get in a hp race. Managing slip will become an issue.
 

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Diesel Kid
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4,580 Posts
Hmm i see. So how you liking the new studs?
 

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git-r-done
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457 Posts
You do not want 100% traction because then thinhs start to break. Let the traction be the slightly weak point for lack of better words.
I have run a few simes and I manually lock the hubs so that they are not trying to engage or disengage. I put it in 4hi and drive around the burnout box.
I have seen boost at the line pushing 25lbs. I try for the most I can get.
As soon as the last ambers light I let of the brake and it's hammer down til the 1/4 marker.
Stock I ran a 16.5 And with the Spartan 210 I ran a 14.5 with 200lbs of crap in the vehicle.
 

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Junior Member
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53 Posts
You do not want 100% traction because then thinhs start to break. Let the traction be the slightly weak point for lack of better words.
I have run a few simes and I manually lock the hubs so that they are not trying to engage or disengage. I put it in 4hi and drive around the burnout box.
I have seen boost at the line pushing 25lbs. I try for the most I can get.
As soon as the last ambers light I let of the brake and it's hammer down til the 1/4 marker.
Stock I ran a 16.5 And with the Spartan 210 I ran a 14.5 with 200lbs of crap in the vehicle.
X2

I did a 2 wheel drive burnout to get the water off my tires then locked it in 4 wheel drive....i also lowered my tire pressure to about 50 cause i roasted all 4 the first time...i would boost around 20 the leave as soon as you see that third yellow light...Have Fun!
 
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