So they took a 2017 F150 Supercrew with the 3.5 EB engine. Did a tune, added an intake and an exhaust and went racing. The truck is a 4x4 which they apparently used as the truck literally blasts out of the hole. One of the last races is against a Hellcat. Care to wager who won?

 

Pretty surprising how many of those vehicles were completely uncompetitive.....

 

I saw that yesterday, that thing MOVES! He has launching it down to a science, the only thing that kept up out of the hole was the Firebird that was set up for drag racing. The faster cars were closing quickly as the aero disadvantages of a full sized truck really come into play. Very impressive.

 

would have been nice if they had shown 60 ft times and 1/4 mile times and speeds.

there was a f150 , 4 door ecoboost 4x4 truck at houston running 12.2. i think around 110 mph.


some of those video make me think he red lighted or the other guys didnt care about reaction time.

 

I beleive it. My 2017 3.5/10 speed with MPT tunes scoots pretty damn good with 4h launch. Nothing like hearing all 4 tires squeal when taking off.

 

Sorry for my ignorance here, but isn't it bad for the truck to use the 4x4 on dry pavement? Especially if you're being hard on it?

 

Im a noob at 4wd, but always been told as long as you dont launch at a crazy high rpm and keep it going straight its fine. Seen countless videos of people running em up to 120 in 4h. Fastest ive got mine was 100 in 4h. Then pulled over clicked it in 2wd and took off.

I usually do a 2k rpm 4h launch.

 

The problem with 4wd on dry pavement is the front end gets into a bind with the opposite wheels and the rear axle. Most of this is caused by the wheels turning at different speeds while turning so as long as you are going in a straight line the wheels turning at the same speed and everything is ok. If you turn the front end hops and pops while it is fighting the difference in wheels speeds. If it binds tight enough bad things can happen. That's why it's not recommended to run 4wd on pavement.

 

is running in 4A different than 4H?

my new 2017 has a 4A and a place where is shows how much power goes to the axles. is 4a likean awd ?

dealer told me to put in 4a all the time.

 

4A is AWD, safe to run under any conditions. However, I wouldn't use it till you need it.

 

I didn't know that about the 2017s having 4A. That sounds like a on demand AWD setup not quite a true AWD but acts like it when needed.

 

I think it's only on the higher end models.

I just read up on it, you will lose gas mileage and can get some vibration if you run it all the time. The hubs will always be locked. I don't think the dealer should be recommending constant use.

 

I've heard of some people switching on the 4x4 in the rain, but the idea of driving down the interstate in 4hi makes me cringe, rain or shine. I only use mine off road, at the beach, or at the boat ramp, and honestly most of the time I don't even need it. But I suppose I could see how it could help launch you off the line.

 

As long as you make the shift into 4hi at a lower speed it won't hurt anything. The manual lists 50 or 55 as the maximum speed to go into 4hi, anything faster and getting everything spinning at the same speed is a problem. Once it's synced there's no upper limit, the gears and chain in the transfer case can spin just as fast as the trans. There isn't a limit on the speed going from 4hi to 2wd.

Go launch a fast Audi or some other car with a true AWD setup and see just how much difference it makes putting power to all 4 wheels. With all 4 tires putting power down not only can you launch harder but you can get further into the power sooner. That Hellcat couldn't go WOT until deep into 3rd gear. The truck was WOT off the line. That's how he was able to win.