Rear Gear Break In Period?

[Brody1]

My 03 Centennial GT is currently in the shop for rear gear swap to 3:73 gears. Is there a recommended break in period? The mechanic mentioned there is a slight humming noise upon accelleration but that it should subside over time when the "break-in period" is over. Comments welcomed!
Brody

2003 Centennial GT Convert.

 

[tmoneyballin]

I gave mine a good 1000 miles, you will get a mixed opinion on this, some say less to none. Biggest thing with mine was to inspect for leaks, I had a bad pinion seal and it would have caused some problems, but I noticed the leak and fixed it....

 

[Tim2002GT]

Some people beat on it as soon as they leave the driveway. I put about 300 miles on mine before I really got on it. Just follow your installers instructions and that way if they continue to whine, you can take it back and he can't say it's your fault.

 

[Stan Weiss]

The ring and pinion gears should have been lapped together during the manufacturing process. Because the pinion depth or backlash may not be exactly the same give them a couple 100 miles or so. Also did you install a bearing kit or use the old bearings? If new bearings you will want them to get a few miles also.

 

[goshia]

oh about 30 ft

 

[tmoneyballin]

30 ft is a good estimate too...

 

[Seraphitia102]

500 mile break-in period is recommended by Motive.

 

[Brody1]

Thanks, I appreciate the response!

 

[topless98gt]

Thanks, I appreciate the response!

Sometimes when people say stuff like '30ft', I thought that they were kidding and wanted me to **** up my car.

But quite honestly, I was stupid and didn't know about break-in periods, so I gave it about 100ft and then I drove it normally, pretty high spirited. I haven't had any problems yet, knock on wood.

But JUST to be safe, give it a good 300 to 500 miles.