Is there any concerns with these rears?

07 with a M90 roush blower, 26k miles on it.
My spider gears blew apart, trashed all the bearings.
I had the entire rear end rebuilt, upgraded to a cobra diff.

The car has 425 to the wheels, Continental Extreme Contact sport, never been to the track. No donuts, normal occasional aggressive driving.

 

You should be alright. You might consider adding oil catch cans and a tranny oil catch can if you like spirited driving. Have you had the tranny oil changed? Check your belt. Plugs been changed? Check your hoses as they can get soft and let go one day. Id say if you find even one that needs replaced you might as well do all of them.

 

Thanks for the feedback.
I only had the car a year and working my way through all the little things.
I know the car is close to the limit on what the internals can handle, but didn't expect the rear to go.

I did the plugs since I heard of the nightmare of them seizing and breaking.
Pulley upgrade with boost a pump and oil catch can.

Yeah might as well do all the hoses, haven't touched the Trans.

 

Rear end might have let loose bc of drag strip time. Hard telling. A guy doesn't really hear of rear ends going out but i know it happens at the track more often than not

 

Automatic or manual tranny? Automatic, I recommend having the input shaft replaced with a billet one and the external Servos replaced with some updated ones to prevent case failure.

 

Its a manual.
I'm going to just brush it off as a fluke or previous owner abuse. I had a 89 supercharged notch back for 17 years and drove it hard everyday and never had an issue.
But at 26k miles???
Now Ill just stress about the trans blowing next.
The cost of upgrading the trans is almost a new short block.