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Using locking diff to get a fast start on the street

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Old May 16, 2025 | 09:52 PM
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Using locking diff to get a fast start on the street

One ‘problem’ with the 6.7 diesel, it puts down loads of torque and cannot get off the line w/o spinning one wheel and getting nowhere! One time I got this bright idea and locked the diff to get in front of the car next to me at a light so I could enter the freeway. It worked like a charm, the back end floated a little, but it hooked up and took off getting me in front to enter the freeway! I know the diff unlocks ~20mph so it worked great. Anybody used this feature like this?
 
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Old May 16, 2025 | 10:47 PM
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No, I'm seldom in that big of a hurry.




 
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Old May 16, 2025 | 11:56 PM
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Yeah, my truck accelerates pretty well without locking the diff.
And, of course, you run the risk of breaking something doing hard acceleration runs with it locked, especially if you suddenly had to make a turn while it was still locked.
IIRC, it doesn't unlock until above 25.
 
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Old May 17, 2025 | 05:48 AM
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Originally Posted by F250 BlueJeansMetalic
One ‘problem’ with the 6.7 diesel, it puts down loads of torque and cannot get off the line w/o spinning one wheel and getting nowhere! One time I got this bright idea and locked the diff to get in front of the car next to me at a light so I could enter the freeway. It worked like a charm, the back end floated a little, but it hooked up and took off getting me in front to enter the freeway! I know the diff unlocks ~20mph so it worked great. Anybody used this feature like this?
Was that you, You should remember me, I was the guy laughing.......Thinking, what a fool that guy is, or wait must be a doctor on the way to the hospital.

If you really want a hard acceleration, put it 4 wheel high, get the RPMs up and lift off the brake pedal!!

Back in the days of tuning, I'd be able to launch stuff off the dashboard into the back seat. It took some finessing not to wheel hop the crap out of it.
 
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Old May 17, 2025 | 08:26 AM
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Originally Posted by 1olddogtwo
Was that you, You should remember me, I was the guy laughing.......Thinking, what a fool that guy is, or wait must be a doctor on the way to the hospital.

If you really want a hard acceleration, put it 4 wheel high, get the RPMs up and lift off the brake pedal!!

Back in the days of tuning, I'd be able to launch stuff off the dashboard into the back seat. It took some finessing not to wheel hop the crap out of it.
truck wont let you brake stand. it pulls power.
 
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Old May 17, 2025 | 08:29 AM
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I had storms roll through last night and my land is wet and muddy. I used my 4x4 and wheel lock as it was designed and got my 31' toy hauler parked.

Ok, I'm guilty of going 4x4 and diff lock at a red light twice. 🤪
 
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Old May 17, 2025 | 08:07 PM
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Not sure if have the diff lock unlock at full throttle is great for its service life, but hey, if it keeps you off of drugs, hookers and gambling, more power to ya.
 
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Old May 17, 2025 | 09:14 PM
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Originally Posted by twobelugas
Not sure if have the diff lock unlock at full throttle is great for its service life, but hey, if it keeps you off of drugs, hookers and gambling, more power to ya.
What in the heck do you think he's running from?
His bookie is also a pimp and drug dealer and he owes him big bucks!
 
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Old May 19, 2025 | 10:02 AM
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I did not realize these were drags trucks..... Like above. I've never been in a big enough hurry to break traction on the rear tires.
 
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Old May 19, 2025 | 11:29 AM
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I wind up turning off traction control because if I am making a turn and give ti too much pedal a group of tires spins and the truck drops power. A dead pedal when turning with traffic coming is not a fun experience. I wound up turning my Pedal Monster down to save on tires. I don't need to lock mine up, doesn't even have a locker, just turn off traction control and it will GO! I went head to head with a dude in an F150 with the 5.0 and wumped him. Not once, not twice, but several times.
 
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Old May 19, 2025 | 03:50 PM
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I was under the impression that the E-Locker Pull Dial - was SUPPOSED to be used from stop light to stop light-my bad.... I think it's good to engage in a straight line from time to time! Asking for a friend.....

 
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Old May 19, 2025 | 09:55 PM
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Both wheels break loose when I do that.
 
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Old May 20, 2025 | 05:30 AM
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If your giving it the beans, from stop, nothing helps the fact it pulls timing, to stop spinning, cant 'really' turn traction control off, it will still do it.
 
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Old May 20, 2025 | 07:38 AM
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Its a truck pal, not a race car
 
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Old May 20, 2025 | 08:24 AM
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Originally Posted by longhaultransport
No, I'm seldom in that big of a hurry.
Count me in. Never been in a hurry to get to a shop to fix the truck I was getting off the line fast with.
 
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