[mickman77]

Originally Posted by snj8198

i forgot, you will need to machine the housing at the input bearing to accept the larger input bearing that goes with the 32 spline gear. If the machining and parts chasing gets to be too much look for a late 80's - '92 NP205 with the round pattern 6 bolt pattern, this will have the larger input bearing already installed. This will also let you mount the tc directly to the tail of the trans eliminating the adapter too.

Bellhousing: do you want to run your mechanical clutch linkage or convert to hydraulic? AA sells a custom bellhousing that allows you to use your existing mechanical, or you can use the bellhousing that would come with the NV4500 and switch to a hydraulic setup. -steve

When I done the same swap with the same parts mentioned here, the inside shift rail will hit the stock 4500 tailhousing. They will need to be spaced 2.5" apart to get enough room for the inner rail to travel full distance out. This leaves 3 options. (1)buy the AA tail housing for this application and clearence issues will be avoided. (2) Grind the stock tailhousing out for clearence. If option 2 is used, the factory TH may be weakened a bit with the loss of material and leakage could develop in this spot. (3) Have a custom spacer machined like I did to mate the 2 together. The 205 I used came out of an '87 1 ton from behind an SM465. It has the long 32 spline input that will mate up slick as a whistle. Check this thread for more info http://67-72chevytrucks.com/vboard/index.php