Ford 9" rear axle whining...

[iwannadie]

A guy I know put a ford 9" with a spool in his 99 camero and he said it was all new internals.

The first day driving he said it sounded horrible, whines and sometimes a ticking. He changed the fluid and it was full of shavings, fresh fluid and has same problem. It has about 300 miles on it now and still says it sounds a mess like the first day no change.

Thats not much to go on I know but if any more info is needed to take a guess I can ask. Does it sound like the spool was installed wrong or the rear end is just trashed?

 

[IJ.]

What gear ratio?

 

[iwannadie]

What gear ratio?

Dam... Ill have to ask lol I didnt think to ask about ratio last I talked to him.

 

[IJ.]

4.11:1 are just noisy

All the shavings in the oil is not a good sign though.

 

[4U2QUIK]

does the person that installed know how to shim the rear end properly? because it sounds like it's not simmed properly, if at all.

 

[Poodles]

All new internals means he needs to break it in correctly, sounds like he didn't...

 

[iwannadie]

He took it to a shop that is supposed to be pretty good. I have no idea if/how he broke it in. I could understand the noise being normal if it was the same noise, but the way he describes it as whining sometimes and other ticking sounds out of the norm.

Oh I forgot, when hes coasting(no gas or in N) it doesnt make any odd sounds, only when giving it power.

Ill ask next I see him what ratio and how he broke it in. I do know he used just normal fluid 85w90.

 

[Poodles]

When my diff in my truck was rebuilt it make a TON of whining and odd noises until it was broken in...

 

[iwannadie]

Ok, asked the guy and it has 3.50 gears and he broke it in proper.

 

[03bamaGT]

Take it back and get it re-shimmed...it isn't shimmed properly right now and most likely has messed up the gear.

 

[IJ.]

Something very wrong as the 3.5's are one of the quieter ratio's.

 

[4U2QUIK]

I'll restate what I said before. Someone either shimmed it wrong or not at all. I've been through dozens of ford 9" rear ends, and I've screwed enough of them up by assembling them wrong to know.

 

[iwannadie]

Ok, thanks for the input everyone Ill pass it along.