chevyz71z28 Posted December 20, 2012 Report Share Posted December 20, 2012 So I am in the middle of swapping to a performance 4l80e and I was just wondering if there is anything that I can do to beef up the transfer case at the same time while it is out. I already have to break it apart to change the input, so was thinking about building it up at the same time. Any info would be great and part numbers would be even better. Quote Link to comment Share on other sites More sharing options...
candyman74 Posted December 20, 2012 Report Share Posted December 20, 2012 i would definitly get one of these while you have it open. 01-2010 GM Transfer Case Pump Upgrade Kit from Merchant Automotive [10001]$75.00 http://www.puredieselpower.com/catalog/012010-transfer-case-pump-upgrade-kit-p-32260.html?gclid=CLK9hNWpqbQCFQixnQod93wAag&m1track=googlebase&osCsid=1ccd081a19f2b143dd2d0a70fc834881 Quote Link to comment Share on other sites More sharing options...
2bfast Posted December 20, 2012 Report Share Posted December 20, 2012 Not needed but your choice Quote Link to comment Share on other sites More sharing options...
candyman74 Posted December 20, 2012 Report Share Posted December 20, 2012 yeah but for 75 bux thats some cheap insurnace and piece of mind. Quote Link to comment Share on other sites More sharing options...
chevyz71z28 Posted December 20, 2012 Author Report Share Posted December 20, 2012 Yeah I will do this. Is there anything else like different shafts, bearings, or gears? I am probably going to do a rebuild as there was some play on the output Quote Link to comment Share on other sites More sharing options...
idahoBLKss Posted December 20, 2012 Report Share Posted December 20, 2012 have you ever seen inside the transfer case ? there is nothing involved about it 2 thick a$$ chains and a couple gears lol not much to upgrade honestly . Quote Link to comment Share on other sites More sharing options...
2bfast Posted December 20, 2012 Report Share Posted December 20, 2012 I just cant justify splitting the case for something like that. For what its intended to do it wouldnt be worth it to me. Again, your choice Quote Link to comment Share on other sites More sharing options...
chevyz71z28 Posted December 20, 2012 Author Report Share Posted December 20, 2012 What could be causing the little play at the output, or is it nothing to worry about, I was just thinking that it might wear out the output seal. I already have to open it up anyways to change the input shaft. Quote Link to comment Share on other sites More sharing options...
kissfans03ss Posted December 21, 2012 Report Share Posted December 21, 2012 What kind of play do you have?, in and out or is it rotationa like your chain is stretched.maybe check tje tolerances first. Sent from my DROID BIONIC using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
chevyz71z28 Posted December 21, 2012 Author Report Share Posted December 21, 2012 Up, down. Probably about an 1/8" Quote Link to comment Share on other sites More sharing options...
Downeast Johnny Posted December 21, 2012 Report Share Posted December 21, 2012 For whatever it's worth; The owners manual schedules a new chain at 60,000 mi. Quote Link to comment Share on other sites More sharing options...
chevyz71z28 Posted December 21, 2012 Author Report Share Posted December 21, 2012 it only has a little over 40000 Quote Link to comment Share on other sites More sharing options...
zippy Posted December 21, 2012 Report Share Posted December 21, 2012 There aren't really any big performance parts out there for that transfercase since it doesn't have much of a failure issue due to power. I would recomend doing a full inspection of it's parts and replace anything that is even close to being out of spec. I assume that since you are spending the money to go to the 4L80E you plan to make some serious power. Another thing to consider is replacing the viscous coupler with a new unit and sell yours as a low mile unit. At the very least check it's torque output. Viscous coupler type limited slip's don't tend to have a long life in high heat situations such as transfercase's which is why most awd cases are built with open diff's or Torsen style limited slips. Just make sure everything is in perfect condition and make sure to use a high quality Dexron 3 fluid. Do not use a Dexron 6 in the transfercase. Another option you could add is a transfercase cooler. Other than flat out abuse the main killer of the units used in the SSS trucks is heat. Installing a transfercase cooler would really help that issue. Quote Link to comment Share on other sites More sharing options...
chevyz71z28 Posted December 21, 2012 Author Report Share Posted December 21, 2012 I am not really one to abuse my vehicles, I take it pretty easy. I just like doing it right and not needing to worry about nothing. Quote Link to comment Share on other sites More sharing options...
Blazerdave2000 Posted December 25, 2012 Report Share Posted December 25, 2012 My uncle does transmissions and I just had my Trans rebuilt/beefed up and he said the only real problem with the transfer cases is something inside flexes and overtime it rubes a hole in the casting/case. So he takes them apart checks everything out and installs some sort of plate inside to prevent that. Maybe that helps u. Quote Link to comment Share on other sites More sharing options...
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