Drag questions - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 04-17-2008, 10:10 AM Thread Starter
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Drag questions

Going to run the truck this summer.....as soon as i get new tires and the JW valve body. SHould i launch in 4x4 then take it off once i am going? or is that real dangerous?

2001 F250 powerstroke!
MBRP 4 inch turbo back installer series
32 inch NITTO terra-grappler
JW Valve Body
DP Tuner 40, 80, 120, 140 agr., SleD Pull
New S&B Intake
Foil Delete
Blacked out tints
2.5" leveling kit
F-550 Spring Pack in the rear

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post #2 of 10 Old 04-17-2008, 10:21 AM
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Well that's whats so awesome about this trucks is the 4x4 boosted launch.....I would try a half boosted 4x4 launch and get keep going up till it gets to the point where all your doing is lighting up the tires then back off the boost.....you should be ok, just don't get carried away with it....baby steps

-Julian

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post #3 of 10 Old 04-17-2008, 10:24 AM Thread Starter
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ok....so when i am going down the track should i shut off the 4x4 switch or just leave it on?

2001 F250 powerstroke!
MBRP 4 inch turbo back installer series
32 inch NITTO terra-grappler
JW Valve Body
DP Tuner 40, 80, 120, 140 agr., SleD Pull
New S&B Intake
Foil Delete
Blacked out tints
2.5" leveling kit
F-550 Spring Pack in the rear

Coming soon
Gauges
Wicked Wheel

"jack em up, Fat chicks cant jump!"
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post #4 of 10 Old 04-17-2008, 10:26 AM
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When I am racing on the street I reach down and throw her out of 4x4 after the launch. But that is just me.

Performance: SCT Xcal-Innovative Diesel, 4" Turbo Back Exhaust no muffler and kitty missing, Spearco IC, ID Power Elbow, AFe Stg. II Intake, 03 Turbo.
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Looks: Westin Black Powder Coated Bull Bar, Recon Smoked Cab, Mirror Lights, and 3rd Brake Light, 4" Superlift kit, 35" ProComp Extreme A/T's, 18x10 Diamo Black & Chrome Rims.
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post #5 of 10 Old 04-17-2008, 10:27 AM
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Originally Posted by joelucci33 View Post
ok....so when i am going down the track should i shut off the 4x4 switch or just leave it on?
Shut it off but it won't dis-engage till you let off....so be sure to let off all the way before you make the turn around.....it probably won't hurt to come to a complete stop and the go and make the turn around

-Julian

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post #6 of 10 Old 04-17-2008, 10:32 AM
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haha with my hubs locked it makes some scary noises running over 60, so i useally just like to scare the person with a lunch get a few cars on them, and slow her down....


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On vacation from a truck for a year or...
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Looking at 6.4s Moving in a few months then hopefully buying my dream truck!!!
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Driving an Audi till then...
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but at work I drive
16 E-450s 7.3 powerstroke Ambulances
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NO CUMMINS.....
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post #7 of 10 Old 04-17-2008, 10:33 AM
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x2

it wont disengauge under load.. and since your dragging you don't want to let off
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post #8 of 10 Old 04-17-2008, 10:35 AM Thread Starter
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ok... good to know....the thing is i cant be letting off midway down the track....a couple runs with this cant do to much damge can it?

2001 F250 powerstroke!
MBRP 4 inch turbo back installer series
32 inch NITTO terra-grappler
JW Valve Body
DP Tuner 40, 80, 120, 140 agr., SleD Pull
New S&B Intake
Foil Delete
Blacked out tints
2.5" leveling kit
F-550 Spring Pack in the rear

Coming soon
Gauges
Wicked Wheel

"jack em up, Fat chicks cant jump!"
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post #9 of 10 Old 04-17-2008, 10:39 AM
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ok... good to know....the thing is i cant be letting off midway down the track....a couple runs with this cant do to much damge can it?
No would don't need to let out till the end, take it out of 4x4 sometime down the track and like I said pratice with the truck first on the street with a boosted launch and when you get to the point where your roastin' the tires back it down, because that is going to be hard launch on the track and that's where you start to break things

-Julian

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post #10 of 10 Old 04-17-2008, 10:45 AM
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You can lower the tire pressure and launch a little harder w/o spinning. I was spinning with 35 psi and i dropped er down to about 22lbs and no more spinning.

If you can go to the test and tunes and i started launching at about 1500 rpms to about 2200 rpms. But I tryed it the very 1st time without boosting to see what it was like.


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