May be a dum question, but I will ask it anyways. Yesterday my rearend (in car) starting howling/whining. A buddy of mine took a look at it, and seems to think the carrier bearings are going out. I am thinking of either trying to get a kit and fix it, or just trying to find a 3.73 rear end with disc brakes.

Anyways to my question:

Without taking the rearend apart, how do I know if it is a 25 spline or 27 spline? It is a stock 10- bolt rearend with drum brakes. Automatic (700r4) tranny.

Any help will be gratelly appreciated,

Thanks,
Scott

 

it should be a 28 spline if its the original to the car

 

other than counting the splines, the only other way to know is measure the diameter of it, of which i do not know the size differences....