How can I tell if I have a 4.4 type r transmission or a 4.7 if it dont have any bar code ? I know its type r cuz at 80 it's at 4400 rpms or 4500 n its definitely lsd .. I bought the car with it already the guy all he told me it had a lsd transmission so I took out the axles to see inside the diff and its 100 percent lsd but not sure what time I have . Can some one tell me