Quote Originally Posted by BillBoost37 View Post
All HD diffs are 3.29 in a 4T65 trans. Make sure you put the sun gear in the correct way and you'll be good.

ATSG manual says to put a big screwdriver or wedge in there and give it a whack... it's all good as long as it's a fast hit to make the compression ring compress.
Not saying youre wrong, but arent the GTP's and GXP's HD diff's? which are also 2.93