sm465

[k-20]

can any one tell me if a sm465 box out of a 79' c20 would be the same as one out of a 79'k20.got a spare box out of c20,k20 box is getting noisey! transfer case is a np205,thanks

[Burt4x4]

Duno?

If the transfercase adapter can bolt to the 2x4 tranny then your good to go..if not well then your answer is no

I know no help right....I know nothing about 2x4 trucks....

[earl87gta]

the gear box may be the same but the tail shaft would be diffrent.
link to an artica on rebuilding them.
http://www.4wheeloffroad.com/brandpa...ild/index.html

Here are pics of the 2wd and a wd sorry not better but gives you an idea of the difrence.

[1969 GMC]

2wd SM465 have a 35 spline mainshaft with a threaded end for putting a yoke on the rear. 4wd SM465, depending on year, either have a 10 spline mainshaft with a sleeve to a male input transfer case, or a 32 spline mainshaft that feeds directly into a female transfer case input gear. Either way, you can't just swap the 2wd for the 4wd. You'll have to tear it down and rebuild it (which you would have to do for a mainshaft swap anyway) or run 'er until she blows

[Zoomad75]

Or you could go out and find a divorced version of a 205 (I'm thinking dodge, can't remember) and run it with the 2wd tranny. You'll need to have a short driveshaft between the trans and t/case and a totally separate t/case x-member. It's a lot of work, but you can end up with better driveline angles on the front shaft since it gets longer.

The easiest thing to do would be to rebuild your 4wd tranny.

[earl87gta]

Thats how mine is getting set up I just have to finnish making the new crossmber for the 205 Im using a divorced 205 from a doge with a NV4500 2wd with paring break.