bigstacks95
Diesel Doc
Have you considered being realistic about trying to run an 11.1:1 final with at best 600whp?
Get outta here with your logic :lolly::lolly::lolly::lolly:
Like I said turn that thing WAAY faster
Have you considered being realistic about trying to run an 11.1:1 final with at best 600whp?
Rhetorically, isn't over application of torque the determinate factor, and not the speed at which it occurs?You don't think horsepower is a factor to being able to achieve more RPM?
Well traction is a pretty large factor in this equation, it would be easy to run more RPM down the track with that final if it just had bald tires. That is a faster final gear than most LPS trucks run with an additional 900hp.
If you went down the track at 4500-4800 you could do that for years and never have to touch the thing.
Thanks guys, I have been meaning to do a "build thread" at some point maybe I should get on that.
You defiantly need more horsepower to run a 12.4 final drive, which is what your running with an NV4500 in 2nd gear and the T case in high. 11.15 is 4th gear low, and is miles too fast. We run that speed in the 3.0 truck on shit tracks with a 6.7 to try to get it to load.
And going down the track at 2500-3000 rpm IS where you will break stuff. If you went down the track at 4500-4800 you could do that for years and never have to touch the thing. 5.9's love to run at that RPM. At 3000 you're making too much torque, the engine is "grunting" and you will break it.
If you are running enough rack travel to allow the plunger to get into the upper helix, increasing the timing advance too far will hurt power. I think you are missing the point of several comments in this thread, what you want cannot be achieved by simply bolting on a few parts. You need to be closer to a 13.9:1 final which you can't come close to with any combination of gearing you currently have.
At 4k RPM you are trying to run 34mph in 4th low, 30mph in 2nd high, which are both far too fast for your power level, and 3rd low is 20mph which is too slow.
stock suspension , got 265/70/17 tire for pulling now. first year pulling since new setup, last setup was 3.54 gear with nv5600 and compound 362/485 and i have run it for 5 years, never break anything but the head gasket!How's your suspension setup? Stock, leveled, lifted? A random thought is if lifted, or leveled, with the right wheels, you should be able to clear 35's. If running 33's with 4.10's now, the street manners would be close with 35's and 4.56 gears. But dropp back to the 33's for pulling to pick up the extra rpms of the deeper gear set. Or just try finding a shorter tire for pulling to pick up the final drive ratio, would likely hurt the traction, but could be made up for if you could go wide enough to keep a similar contact patch with the ground.
In the end I don't know that anything mentioned will make you truly happy with the truck. Kinda sounds like you're getting to the point of it's either a pulling truck, or a street truck, because you have to sacrifice setup characteristics of one or both, to try to get it to live as a dual use toy.
Maybe a different transfer case with a lower low range gear to get the final drive ratio closer in direct of the transmission?
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last setup was 3.54 gear with nv5600 and compound 362/485 and i have run it for 5 years, never break anything but the head gasket!
That was probably a better setup for pulling.