[email protected] Posted December 11, 2009 Report Share Posted December 11, 2009 Does anyone know if there is a upgrade I can get to my front differential? I just found out that I need to replace the front diff. I only have 105K on my truck, 03 SS? I talked to the dealer, they said that in 07 they started putting in a stronger diff and larger pan to hold more fluid. I need to have it replaced and looking for another option other than the stock replacement. Thanks CDSS Quote Link to comment Share on other sites More sharing options...
Punisher Posted December 11, 2009 Report Share Posted December 11, 2009 Any upgrade from stock you're not going to be getting your money out of unless your pushing some crazy horsepower. Stick with factory parts. Quote Link to comment Share on other sites More sharing options...
Bear Posted December 11, 2009 Report Share Posted December 11, 2009 I talked to the dealer, they said that in 07 they started putting in a stronger diff and larger pan to hold more fluid. This is going to be one of the few time I say don't listen to the dealer. Whomever told you that must not been aware of the fact that AWD was dropped part of the way thru '05 in the SS and the replacement differentials have since been dropped from GM. Besides that, all the 8.25" front diff's thru the '07 Classic Denali's never changed. Your only left with a few options; 1) you can have your existing diff rebuilt, 2) you can purchase a rebuilt unit from Jasper, 3) you may be able to locate a good used unit from an SS or an SD as they will both have 4.10's stock. The diff's from a C3, Yukon Denali or an Escalade will fit, but they would have came with 3.73's and you would have to pay to have the gears changed, in which case you might as well have your existing diff rebuilt unless it's damaged, 4) you could locate a good used diff from a 4WD with 4.10's and swap your passenger side axle and axle tube onto the replacement unit and be just fine. Quote Link to comment Share on other sites More sharing options...
Zach495 Posted December 11, 2009 Report Share Posted December 11, 2009 I just checked this link because I just started hearing a noise in my front differential (04 SS). It's not very loud if i'm not on the gas at all, but once i put a slight load on it, even just to maintain speed in town, it sounds like a wheel bearing wearing out. Is this common for these trucks? Any idea how much of a bill i'm looking at if I bring straight into chevy dealer? Anyone interested in buying my truck before I do the repairs? I'll take $15K as she's sitting. Quote Link to comment Share on other sites More sharing options...
70chevy03ss Posted December 12, 2009 Report Share Posted December 12, 2009 just had BEN fix mine it was the worse one he had ever seen.. bout 1000 to fix Quote Link to comment Share on other sites More sharing options...
[email protected] Posted December 12, 2009 Author Report Share Posted December 12, 2009 Any upgrade from stock you're not going to be getting your money out of unless your pushing some crazy horsepower. Stick with factory parts. Thank you for the advise Quote Link to comment Share on other sites More sharing options...
[email protected] Posted December 12, 2009 Author Report Share Posted December 12, 2009 This is going to be one of the few time I say don't listen to the dealer. Whomever told you that must not been aware of the fact that AWD was dropped part of the way thru '05 in the SS and the replacement differentials have since been dropped from GM.Besides that, all the 8.25" front diff's thru the '07 Classic Denali's never changed. Your only left with a few options; 1) you can have your existing diff rebuilt, 2) you can purchase a rebuilt unit from Jasper, 3) you may be able to locate a good used unit from an SS or an SD as they will both have 4.10's stock. The diff's from a C3, Yukon Denali or an Escalade will fit, but they would have came with 3.73's and you would have to pay to have the gears changed, in which case you might as well have your existing diff rebuilt unless it's damaged, 4) you could locate a good used diff from a 4WD with 4.10's and swap your passenger side axle and axle tube onto the replacement unit and be just fine. Thanks, is Jasper the full name of the company that has the rebuilt diff's? Quote Link to comment Share on other sites More sharing options...
70chevy03ss Posted December 12, 2009 Report Share Posted December 12, 2009 (edited) Its jasper motors. I have 2 motors from them good company!!! Edited December 12, 2009 by Sick03ss (see edit history) Quote Link to comment Share on other sites More sharing options...
Bear Posted December 12, 2009 Report Share Posted December 12, 2009 One thing about the units from Jasper, when you recieve it, you may be shocked to find you only recieved the actual differential. You will still need to swap on your axles and passenger side axle tube. If this doesn't apeal to you, especially for the price, you may wan't to further investigate having your current unit rebuilt. Quote Link to comment Share on other sites More sharing options...
[email protected] Posted December 12, 2009 Author Report Share Posted December 12, 2009 One thing about the units from Jasper, when you recieve it, you may be shocked to find you only recieved the actual differential. You will still need to swap on your axles and passenger side axle tube. If this doesn't apeal to you, especially for the price, you may wan't to further investigate having your current unit rebuilt. Thanks Bear I think your right on the rebuild, Jasper has the diff for $1900 I'll get it rebuilt. My biggest worry is am I going to have to rebuild the diff every ? so many miles. I love the truck, a blast to drive in the rain. I had plans to add some bolt on's for more horse power, but it seems that the diff can't even hald the 345 it has. Kinda disappointing. Quote Link to comment Share on other sites More sharing options...
Punisher Posted December 12, 2009 Report Share Posted December 12, 2009 Thanks Bear I think your right on the rebuild, Jasper has the diff for $1900 I'll get it rebuilt. My biggest worry is am I going to have to rebuild the diff every ? so many miles. I love the truck, a blast to drive in the rain. I had plans to add some bolt on's for more horse power, but it seems that the diff can't even hald the 345 it has. Kinda disappointing. Everything breaks, whether it was lack of maintenance, an individual defect, or too much horsepower. In your case, it wasn't too much horsepower. I know plenty of AWD SS owners running 600+ crank horsepower on stock front differentials and never a problem. I'm running a magnacharger, and this has been my daily driver for the past year, and I haven't had one problem with my front differential. Mind you I beat the snot out of it when necessary . Don't be discouraged. I'm going to tell you right now unless you have way too much money laying around you don't know what to do with you could probably put on whatever modifications you want to that and never break it. Quote Link to comment Share on other sites More sharing options...
SSplaytoy Posted December 12, 2009 Report Share Posted December 12, 2009 Its jasper motors. I have 2 motors from them good company!!! I hear over on ls1tech, a lot of people like to think differently I personally don't know, but that is just what I hear. Quote Link to comment Share on other sites More sharing options...
Bear Posted December 12, 2009 Report Share Posted December 12, 2009 Thanks Bear I think your right on the rebuild, Jasper has the diff for $1900 I'll get it rebuilt. My biggest worry is am I going to have to rebuild the diff every ? so many miles. I love the truck, a blast to drive in the rain. I had plans to add some bolt on's for more horse power, but it seems that the diff can't even hald the 345 it has. Kinda disappointing. I believe you will be just fine with a rebuild, just make sure whomever you choose to handle the job has new adjuster lock nuts on hand for the differential carrier bearing adjuster nuts. One of the most common reasons for failure in the 8.25” differentials is the lock tabs break off, allowing the adjuster nuts to back off. When most people rebuild the diff, if the parts are in what appears to be in good shape, they will reuse them. This is a dangerous tactic in this area, as each time the lock tab is bent back and forth it gets weaker and is more likely to fail. Quote Link to comment Share on other sites More sharing options...
hawks Posted December 12, 2009 Report Share Posted December 12, 2009 I hear over on ls1tech, a lot of people like to think differently I personally don't know, but that is just what I hear. I have a mechanic that is a dealer for Jaspers and he swears by them. I have there front diff and it's holding up great. Quote Link to comment Share on other sites More sharing options...
70chevy03ss Posted December 13, 2009 Report Share Posted December 13, 2009 I hear over on ls1tech, a lot of people like to think differently I personally don't know, but that is just what I hear. I had a 350 from them in my 70 chevelle turned out to be a 383. I installed a nitrous cam in it and ran a 671 weiand supercharger and i wasn't easy on it either. NO Problems with it !!!! Also bought a 350 for my 88 truck is going to the junk yard motor still good and is staying with us no problems no leaks But thats me Quote Link to comment Share on other sites More sharing options...
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