I took out my front driveshaft to go do some burnouts(nothing better to do on a saturday) and all the truck would do was spin the hell out of the front of the transfer case. The truck would pull itself along but the minute I leaned into it....nothing but transfer case whine. Is there anyway around this? I have seen some guys with 03 SS's taking out the front driveshaft to dyno but not any 04's. Kind of bummed me out. We did a really cool burnout in my buddie's 04 duramax dually though. Edge on level 4 @ 25#'s of boost makes lots of tire smoke.

 

sounds like the diff in the transfercase is fried. I dont think id ever try doing a burnout in my truck like that. Thats a lot more stress than the diff will see on a dyno. I wouldnt even take out my front shaft to dyno but thats just me. I think you need a new transfercase

 

I dont know what the problem is, but i have an SS. I think that if you want to spin the tires you should throw a big *** turbo on the bitch and spin all 4.

 

I just took it out to see if it would work...I didn't really put much strain on it with the front shaft out. I only went a couple feet with it out. Once it was readily apparant that it wasn't going to work we pulled it back in the drive and reinstalled it. I drove it in the rain on Sunday and it would spin all four like mad from a dead start so I know the transfer case is fine. I was just curious why it would take all the power away from the rear tires like that. The truck only has 12,XXX miles on it and I have had no problems out of it.

 

I think the AWD transfer case transfers power once slippage is detected. in other words with the rear axle trying to spin I think it transfers power to the front. I think I read somewhere that the AWD system is not as positive as 4WD meaning that all 4 wheels do not recieve equal amounts of power under normal driving conditions. I believe the transfer case is different on the AWD and 4WD models.

 

Your thread topic should read

? For guys with SS's, C3's or Sierra Denali's anyhow, you may wanna check out this thread...
https://ls1tech.com/forums/showthread.php?t=242458

 

GM states right in their service manuals not to run the vehicle at all without the front ds. Your also not supposed to drive the truck with all 4 wheels off the ground (ie on the hoist). My boss went through all this when the local dealer pulled his front shaft to find a noise. in doing so, they created a very big problem

Gerry

 

Seems like a lot of potential damage for a little wheel spin. A waste of good parts. JMO though.

 

Thanks for the link! Good thing I didn't continue trying to flog it. Kind of sucks though. I would have liked to dyno it and see what it put down.

 

I have did 7 dyno pulls with my front shaft out with no problems.