Rear end started to whine , got louder & louder especially when turning left & right.
Took car to my trusted mechanic & told them to replace L/R axle bearing & seals an "AND" of course to check the axle ends for any damage.
Got it back & it still made some noise but not as loud .
Took car to high dollar place that works on $1000,000.00 cars every day & they said the axles were ate up. So ordered Superior heat-treated axles ( the stock ones are not heat treated & that's why they have groves cut in em after the cheap-*** factory bearings go bad ) Replacing L/R axle bearings again, pinion bearings, carrier bearings , any & all bearings & seals, plus a Summit axle cover & girdle using Royal Purple Synthetic gear lube.
Hope this gets rid of that friggin whine. Can't stand it.
Suppose to be ready Monday.Wish me luck.

 

Well guess what , now the mechanic calls and announces, " It appears both of the Superior axles are warped, one so bad that you can actually see the brake rotor wobble back & forth & makes a clicking sound. So here we go again. Grab the jar of vasoline !
But to my surprise , Mr Magnum with Summit Racing made it good by overnighting another set of axles. Now he didn't have to do that , but thats just really good service from Summit Racing & their employees. To Magnum & to Summit Racing , I salute you. Your the best in my book & will continue to do business with Summit for a long long time. Now lets hear it for the good guys !

 

don't waste money on a 10 bolt. Just save and buy a 9"

 

I don't think you need a 9" for a DD auto w/ stock power. I'm not sure what he has, how do you??

 

No you are right. 10 bolt is plenty for a daily driver non- strip car with stock horse power. Start adding go-fast goodies and going to the track. Get a 9".

 

Hell its just an 02 Z/28 Vert with an A4 & 3.23 factory gears. With a lid & cat-back runnin 13.20's at 105MPH. But I just want something a little stronger that won't wail , whine & howl all the time.

 

A quote from BOB at EPP

"Put a 12 bolt into a early Chevelle, Nova, Camaro, etc and you can beat the crap out of it, and not hurt anything. Put one into one of our cars with a torque arm, make a couple 4000 to 5000 dragstrip launches, and I can just about guarantee you'll pick up gear noise. If it is a drag only car, you'll never know or care about the gear noise. Drive your car home from the track, and the noise will drive you nuts. I feel the torque arm stresses the 12 bolt housing, causing distortion. We have never seen this happen with the 9 inch housing.


Exotic Performance Plus strongly recommends the Moser nine inch. This rear is even tougher than the Moser 12 bolt, and the horsepower of the late model F Body cars keeps escalating every year, which requires a very strong rear. With the recent introduction of the 6.2L GM aluminum block and the excellent flowing 6.2 litre heads, the horsepower of these cars is going to just keep climbing at a very fast pace.The nine inch will handle the power, plus we prefer the way the torque arm is bolted to the nine inch in the same way the oem rear-end is attached. (This is the only good thing about the stock 10 bolt...) The Moser 12 bolt uses four short bolts to attach the torque arm, and they have a habit of loosening up, even when loc-tite is used. Why the nine inch is stronger than the 12 bolt. The 9-inch has an internal rear-pinion support that also supports the gear end of the pinion to limit gear deflection under high torque loads. This seems to be the major reason why the 9 inch doesn't start whining after high rpm clutch dumps, when the 12 bolt will pick up noise.The 9-inch locates its pinion gear lower on the ring gear to improve tooth contact, than the 12 bolt does.The 9-inch has a 0.125-inch larger ring-gear diameter and internal pinion support than the 12 bolt does. This is not much of a difference, but it is worth noting. "

 

You would think that with all this knowledge of rear ends and the problems that F-bodies are having, now & even more so in the future,that some savy manufacture would step up & start building the perfect / lightweight /super strong /bolt in third member. I mean hell, this IS 2007 ain't it . Its not like we're livin in the 40's or 50's. Surely the technology is there and available !

 

Your problem was the axel chrome where the bearing meets delaminated. Thank the pinhead engineers at GM who decided to use a shitty chrome vendor. The shafts do that all the time!