hey guys i just swaped in a 9-bolt posi from a 88 gta into my 89 formula its a 3,27 rear. well this is the problem the install went great nuthin wrong and now that i am drivin around its fine but when i try to pull a whole shot it makes this noise liek sumthing fell on the road. does any1 know wut this is?? do i need to rebuild it be4 i put my 3.73's in? also when i spin one tire how much play should i have be4 the other one spins? and one more question, wut do i need for a rebuild? seals,gaskets, bearings, and wut else thanks so much in advance

 

Not sure about the noise, but there is some 9 bolt info on my page at www.9bolt.com

Miles

 

I sell shims if you want to bring your posi unit back to GM spec.