Launching in 4H

[2boosted]

I launch in 4 hi with a manual shift transfer case so don't have the option to shift out. Holding up with 115mph traps.

I also have the manual transfer case...

4hi is great for launching.....probably AWD is better when cornering an stuff, but I dont see many of you guys protouring ur trucks.

I have used the 4hi in heavy climate condition in narrow curvy roads for 3+ hours trips over 85 and still counting.....

So I'm gonna tell ya if 4HI might hold at mid 11's soon.....

[rutroe]

Read ur sign, and we have almost same mods.....

I launch in 4HI, and never take it off, cause I feel there's no time.

My last pass was 12.74 and so far I only can launch in 4hi, it is usless for me in 2HI, can spin the whole strip and never get traction. I'm on 24's with nitto 315-35-24

So for me at the strip the 4hi is a most.

In the street is also a need, cause, If a ricer just happen to tease me...and roll race, once the turbo hits, my truck goes butt to the left endagering everyone...so at street, if I wanna race, need 4hi too.

So long I have hit 115+ mph have not granead the front internals...YET !

Yeah...I havent' run enough to really compare 2 vs 4. I have the electronic shift between 2 and 4 so switching is easy. If we have the same mods, congrats on the sub-13's. I have not run my truck since swapping the 5.3 for the 6.0...waiting on a 80E swap. But I'm thinking I should be very low 13s or high 12s. Do you have a CCSB as well?

[2boosted]

Yeah...I havent' run enough to really compare 2 vs 4. I have the electronic shift between 2 and 4 so switching is easy. If we have the same mods, congrats on the sub-13's. I have not run my truck since swapping the 5.3 for the 6.0...waiting on a 80E swap. But I'm thinking I should be very low 13s or high 12s. Do you have a CCSB as well?

Nope, RCSB 2002

That's a lot of weight off, but I'm sure you'll be mid 12 easy.

I have to learn how to launch on some boost, that I haven't

I'm not sure but the logic dictates that even if you could press that 2h button, chances are it won't disengage until you realease the go pedal !!!

Correct me if I'm wrong !

[bangbangskeetskeet]

I've never done a 4WD launch at the track but have on the street a few times. I will say there is definitely more traction but also definitely a loss of power. Where you would light the tires up in a blaze of smoke there is no spinning just going.

Just for some references...I have ran a buddy with a Titan from a dig in both 2hi and 4hi. I had a lot more sucess in 2hi. In 4hi I did have more traction but it took forever to get this thing going...my 1-2 shift is at 6100...it felt like it took a day and a half to get up and through the shift. In 2hi I spun a little but it pulled a lot harder and was through the shift in no time.

Now for how fast you can go...I use 4hi the 2 or 3 days a year it rains here in Arizona. Not because I am afraid of driving in the rain...I've driven in worse...but because i don't trust the retards who drive here and I would rather be able to throttle out of a situation than slam on the brakes, lock them up, and cause a 46898642145890998765431 car pile up. Anyways last time it rained I was out drivin around and the same buddy with the Titan wanted to roll race...65 or 70 roll if I remember correctly...he doesn't have 4wd so when we went he spun and I just took off. Went all the way up to....according to the RPM calculator....135 and it was just fine. I've even used it since then in the mud/sand with no problems.

So IMO a bolt on truck doesn't need to launch in 4hi because of the paracitic loss of power it causes. Now a big power turbo, blown, or nitrous truck could use it cuz they have more power to make up the difference with. Just my

[pl4yboy]

I've tried launching in 4hi on a 150 and it's still a power hog. I prefer to launch in 2hi, spin a TINY bit, then push the button and fly by.

[Frenchy]

I can't afford a 4wd.

[molitor]

i had a 98 ECSB with a zz383, and 3200 stall, that buddy would launch at 3k and just drive away, it always did fine in 4hi up to 70, after that it was impossible to steer, it had a detroit locker in it though, that was like draggin a boat

[foggy]

Nope, RCSB 2002

I'm not sure but the logic dictates that even if you could press that 2h button, chances are it won't disengage until you realease the go pedal !!!

Correct me if I'm wrong !

I Launch in 4wd and Hit the 2h button before it shifts into second. Mine does disengage 4wd at the shift.

[rutroe]

Nope, RCSB 2002

That's a lot of weight off, but I'm sure you'll be mid 12 easy.

I have to learn how to launch on some boost, that I haven't

I'm not sure but the logic dictates that even if you could press that 2h button, chances are it won't disengage until you realease the go pedal !!!

Correct me if I'm wrong !

I dunno on that one...Foggy's answer above seems reasonable. The lights on my electronic shift knob switch to 2HI but I'm not sure that's proof that anything changed...

[Smoker_98]

Thanks for the info guys, good stuff!