I just got my 4:10s put in my Z28..Its a 6 speed T56..I also used the master rebuilt kit on the rear end.For some reason it whines when i drive it. Where they installed wrong or is that normal for the first miles you put on it?? please help!!!!

 

What brand gears were installed? If they are Richmonds then they naturally whine.If not then the tolerances were probably set to tight

 

they where Richmond...

 

i need some feed back people!!!!!!!!!!!!!!!!!

 

Well, there are several things at play here.
First, 4.10s are the least quiet.
Second, Richmond gears have a reputation for being louder.
Third, how were the clearances set? You must use a dial caliper and verify, and shim accordingly.

 

Motive Gears have a little wine to them also. If you hear a grinding, or get alot of backlash, then you have a shim out of place.

 

thanks guys

 

I've got a few thousand miles on my richmond 4.10s. They still whine, they used to be louder though, even though the mikronite process was supposed to cut down on noise, typically.

Had the person who installed them recheck them after 4k miles, still setup perfect, so yeah richmond 4.10s make a lot of racket.

 

i got used to it... i don't even notice it anymore.

 

I just made my exhaust louder.

 

turn the radio up... a cure all for that... I would imagine that you need to get it reshimmed then... good luck

 

What's Exhaust?
I am putting on 3" from the Headers Y-ed into a 4" into a 4" Bullet dumped with a 3" Trundown. Might go to a 4" turndown, I want to see how loud it is first with that Cammed 402..

 

I have Richmond 3.73's and they do whine a little. I was told this is due to the higher nickel content in them which makes them stronger. When I 1'st got the 3.73's in they were not set right and when you would let off the throttle they would grind bad. When set right they wined and got a litlle quieter when they broke in.