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View Full Version : Changing out sm 456 for a NV4500


blacksuperjet
11-26-2010, 06:45 AM
I currently own a sm465 and want a tranny that is better for shifting and still have the durability of the sm465. It is bolting between a big block and a 205 t-case. I find that the sm 465 is no syncroed and is so slow shifting. I have done a bit of research on th nv4500 and found there is a few different ones available. I have found a 23 spline nv4500 and not sure if it is as strong as the chevy 32 spline or the dodge diesel 29 spline? Anyone done this conversion? Thanx