how can i dyno my awd truck? I have C3 witch is about the same as the SS truck and i was wounderin how to dyno it. plus what do you think my 1/4 time would be with Magna charger radix intercooler kit and exhaust and tb and programmin?

 

GM says you cant dyno on a 2wd dyno, but I've seen an SS dynoed on a normal 2wd dynojet. You are supposed to use an AWD dyno, but no one makes an AWD dyno that supports the long wheelbase of our excab trucks.

 

Several of us have been looking for a place to dyno with a AWD dyno. No luck so far.

TTT

 

You would have to disconnect the front driveshaft, then just dyno using the rear wheels.

Tony

 

GM says not to disconnect the driveshaft or it will damage the transfer case. Since its nor a true geared Tcase, and uses a viscous coupling, it can overheat the fluids (which can not be replaced).

Do I think the 10 seconds of WOT dyno time will destroy the Tcase...no. Will it cut down the life of the unit...maybe. Will I dyno my truck when I'm finished on a 2wd system...yes.

 

I know I'm gonna get laughed at for this, but...
What do you guys think would happen if you strapped the rear of the truck on the dyno really, really tight, then jacked the front tires off the ground with a big floor jack?

Accident looking for a place to happen?

 

YES

No laughing but just remove the front driveshaft and no one should get hurt

 

I read on another forum of a adjustable a wheel drive dyno. Let me see if I can dig up the info.

 

we have a jeep grand cherokee with full time 4wd and a viscus coupling. one day last winter i was out messing around on the ice with it. doing ebrake slides and all kinds of fun stuff. i found out you could get one axle to lock up and the other to turn to get the thing into a spin(cookies).

i probably only had one axle turning while the other wasn't for a minute or so total and since that day the viscous coupling has not worked right at all. i would say it's not so viscous anymore, it feels more ratchety, it is still awd but the coupling between the front and rear is not smooth anymore, hops into parking spots and stuf like that.

the woman was pissed at me , it is her car not mine

on the DSM all wheel drives they actualy change a part under the car so they can dyno in 2wd, seems like the shops charge a couple hours shop time to put the part in and take it back out. i suppose that could be done with a standard transfer case, probably only take an hour or so to swap one in too. i dont suppose you feel like swaping out your transfer case everytime you want to dyno.

 

This is the only one I know of that can dyno an SS. It works by removing the wheels and bolting on the dynos to each wheel

http://www.dynapack.com
If you call or email them, they can try and find a local operator.
For Southern California, the only operator is
http://www.meridianonline.us