so what is the general consinsous on how much hp/tq a allison can handle before it fails or needs aftermarket upgrade. I was going to use the hypertech tuner for about 65 hp and 100 ftlbs. Think this will toast the tranny?

rubix, based upon my experience, you'll be fine with that tuner at that setting. I think, to an extent, how someone drives their truck has alot to do with it. 4WD launches, power braking, etc will most certainly shorten the life of a stock tranny no matter whether it's a Predator at 85HP, a Juice at 120HP, etc as compared to "driving like Papaw" at all times.

As the old addage goes: "you've got to pay to play."

You should be OK at 65rwhp. Big Blue ran 65 over stock extensively, towing, dragging, sled pulling, before we upgraded and trans was still OK.

You should be fine with that setting. Go any higher and that and you'll start going into the Allison danger zone.

I run my Juice on L3 and have had no problems. I play around in L5 and have never limped the tranny.

I do not do WOT accelerations in L5 anymore, and when I feel the tranny downshift when I go to pass, I ease out of the throttle to avoid too much slippage.

You shouldn't have any problem with a 65 HP tune, unless like the others said, you do burnouts, WOT accelerations from 0, etc.

Enjoy!

:exactly: Im with Andrew Fessler! Thats exactly what I do and I have never limped my tranny either (although I only have 4000 miles on my truck). I never seem to see ANY slipage (checking the Edge) once the TCC is locked up. When its unlocked I normally see 20% or so. (3/5 on the edge)
One question tho...when I check the "records" in the Attitude, it doesnt seem to show that it has ever backed down. (and ive done a couple WOT 0-60 runs with the Juice in 3/5 and defuel between all shifts) I also have a stock exhaust. Should'nt my Attitude be recording at least a tiny bit of backdown with this kind of stuff? Maybe its just not recording it...Becuase I have done some timed 0-60 runs with the Edge, yet the Attitude still says "0-60 record: 0.0 secs" (hehe I wish it was that fast). Maybe you have to clear all the records before it will start recording again?? I bought it used on ebay and the guy who had it before me obviously had some serious mods because the max MPH recorded is 130 (!!!) and the max engine RPM recorded is 3870 IIRC. I didnt want to reset those just becuase I want to keep those records in there just for kicks.:)

----Ben

I am pretty sure the attitude only shows back down from the EGT back down. So if you have the EGT backdown set to 1500 and you are only running 3/5 you have probably never seen 1500 EGT's.

You have to go into the attitude menu and do a 0-60 performance test to get it to record that in the records.

Beleive it or not I have the EGT set point at 1390 and have never gotten an EGT alert or backdown (stock exhaust!!). I dont know why! I have done a timed 0-60 run with the Attitude and got something absurd like 10 seconds (Edge set at 3/5, defuel between shifts)...I didnt even really launch it carefully...I just wanted to play with the 0-60 timer...well it never recorded!! Maybe I have to reset my top speed and RPM before it will record?

---Ben

What kind of upgrades can i do for the tranny? I would rather be safe then sorry. My truck runs pretty good right now with the hypertech in the #2 setting. My truck is also lifted with 35's. In the #3 setting it ran good but after reading all of the comments on this site i backed it down. ANy info would be great.

hey phx i have the same rigg as u with a 6 in and 35s how does your truck run on level 2? can u tell the differece?

What kind of upgrades can i do for the tranny? I would rather be safe then sorry. My truck runs pretty good right now with the hypertech in the #2 setting. My truck is also lifted with 35's. In the #3 setting it ran good but after reading all of the comments on this site i backed it down. ANy info would be great.

Transgo shift kit and a tripple disc converter will hold the Edge. If you get this done I'd inspect the clutch packs and see if any wear is noticable. If so I'd replace them while the tranny is out of the truck. My personal opinion is go with a SCIII or bigger or an ATS stage III or bigger. I don't think you can have enough tranny in these trucks.

ok so just for my peice of mind give me some info and tell me what u think? I called hypertech and they said all three levels are safe to use as long as i pull within the recomended weight. the stages are 56hp 77 hp and 96 hp. I have tried it on 77 and it definatly is better than it was stock before the lift and 35s. generally what hp can the allison handle before i should be worried? Is hypertech full of sh** when they say its safe on level three. I know at least 4 people that run it on three all the time pulling and stock and so far no problems. Fell free to give me ur two cents.

Depends on who at hypertech told you that. Sales people will tell you anything to sell a product. I denfinately wouldn't tow with the 96hp tune and I wouldn't tow heavy with the 77hp tune. A lot also has to do with the actual increase in power. They may advertise these levels but are they close to that on a dyno? Also it makes a difference if they advertise it as flywheel power or rw power. I personally have no experience with hypertech so my .02 may not be worth squat.

I wouldnt tow on a 90 hp program and a stock trans...........

I havw towed up to 8000 lbs on level 3 and never saw the pyro temps hit 1200 even on a good steep hill. I have left it on level 3 since I bought the tuner and havent had any problems with it. I couldnt be happier...Check out this link.....The difference between an LLY tuned and an old LB7 tuned....Straight from Hypertech. I have put 25000 miles on this truck so far and with abou 15000 miles with Hypertech and would suggest leaving it on level 3.

http://www.hypertech-inc.com/dynogmtrk.html

Nick

:eek: Did anyone but me, notice at the bottom of the dyno specs. listed by

hypertech. The vehicle tested says 2003 Chevrolet C3500 HD.

AND TEST DATE: 1/1/2001.

;) If they can Spec this.... they can claim anything !

Don't the Specs on the D-Max change every year?

all the lb7's had the same specs(01-early 04)

I guess I was under the impression the D-Max's HP and Torque were raised each year. Would'nt that change the outcome.
I'm obviously learning something here....;)

Did anyone notice where Hypertech makes their power? Try comparing this graph to the various graphs on John Kennedy's, Edge, or the various other vendors websites. You guys that run the Hypertech and are happy with the performance should try comparing it to some of the other tuners that are available. It's not difficult to figure out why they claim their tuner won't hurt the Allison.

well at least it doesnt have the egt problems that the predator does and i would put the stage three 96 hp tune up against any other tune around the same hp. in level three that truck hauls A*&

Did anyone notice where Hypertech makes their power? Try comparing this graph to the various graphs on John Kennedy's, Edge, or the various other vendors websites. You guys that run the Hypertech and are happy with the performance should try comparing it to some of the other tuners that are available. It's not difficult to figure out why they claim their tuner won't hurt the Allison.



What becuase the power is not that great? The only reason i bought it was my dealership will warranty the truck with this programmer only.

What is WOT acceleration?

Dean

WOT=Wide Open Throttle

---Ben

hyper???? Hooooo??? They were left behind in the game a long time ago.

well at least it doesnt have the egt problems that the predator does and i would put the stage three 96 hp tune up against any other tune around the same hp. in level three that truck hauls A*&

Damn! if you think thats fast wait till the local bicyclist blows by your a$$!!! SOOTLESS ):h


No offense bud, I'm runnin sootless to with my winky dink 95 hp program-:t ):h

The Hypertech would make a good wheel chock when you get something that makes real power.:Nothing_f

I wouldnt tow on a 90 hp program and a stock trans...........


I've been doing it since I bought the first Quad Stealth! I now have almost 15,000 miles towing a 10,000# TT. I am not in the mountains or anything like that, but I have towed on 10% grades that were 3 miles, and one that was 3 1/2 miles. To date I have limped the tranny while towing the TT once. That was because I was using criuse control @ 68 mph on a grade that was 8%, I have zinged the tranny 3 other times, once on the 110 hp setting, the other two time was with the Predator on 85.

I am not saying this is wise, but I have had no real problems as of yet. Cruise makes a huge difference in making it limp. My truck now has 71,200 miles, no transmission or injector problems.

My truck has 30,000 miles and has had a 95 hp program since 5,000 miles I tow small loads such as 2 fourwheelers or snowmobiles on a trailer, when not towing I drive it like I rented it. No tranny limpage to date.:ro)

keep using ur predator and keep watching the pyro u wont even see me go by. ha ha

Not to mention they dyno'd the truck w/ 25hp more than most other guys are seeing, so if u take the 25 off the top level it's less than 325 rwhp.

guy's w/ juices are seeing high 300-low 400rwhp.

Not to mention they dyno'd the truck w/ 25hp more than most other guys are seeing, so if u take the 25 off the top level it's less than 325 rwhp.

guy's w/ juices are seeing high 300-low 400rwhp.


If you look closely they dynoed a 6-speed truck. Possibly the reason for the extra 25 hp.........

Just guessing.

The stock tranny will take about 650 ft-lbs and you will blow through the stock converter at about 720 ft-lbs.

These are numbers from Eric and John Kennedy based on dyno testing.

Any more than that and you're asking for a new converter and a tranny upgrade.

If you look closely they dynoed a 6-speed truck. Possibly the reason for the extra 25 hp.........

Just guessing.

OOPS, didn't look close enough.

:ro) Yep you can blow through a convertor with the edge and a quad stack in a hurry.

put vanaaken 110-230 hp tune in at about 18000 miles now have 72000. have exhaust and intake run on 110 almost all the time. have a 9000lb tt and always use cruise but never have limped towing. truck has been limped 5-6 times on 230 setting and you can definitly tell the trany slips but on the 110 setting it seams flawless.
would love to upgrade trany but don't realy see any problems with what i've got unless you turn her up. would hat to do the trany and then start having problems.

90-125 rwhp on an LB7 depending on how you use it

I have a '02 LB7 and an old hot juice v4.61 that I run on the 90 hp setting most of the time, with the 125 setting on tow/haul for the occasional onramp blast. I tow (infrequently - maybe 5,000 km total) a 3 horse trailer on level 1, I think thats 60 hp on this box? Went on at 8,000 km, has 121,000 km now. Stk tranny, no limps, no brake stands, just a few WOT standing starts when I first got it. Still shifts good on the 90 hp setting, but I get major flairs with the 2-3 and 3-4 shift at 125 hp/WOT. Just my experience for what its worth.

I had the Hypertech on my truck before anything else. I ran it on the 96hp stage since day one. I had no problems whatsoever. The truck ran a 15.4 1/4 mile. I then went to the Bullydog Powerpup on the 95hp level. The truck ran 15.1 in the 1/4 mile. Now, my Six-Gun on level 4 (93hp) runs 14.9 in the 1/4 mile. Just letting you know that the Hypertech isn't the fastest 90-100hp programmer out there.