tsailer2
Junior Member
- Joined
- Apr 12, 2014
- Posts
- 24
- Reaction score
- 1
- Location
- Atoka OK
- First Name
- Tim
- Truck Year
- 1983
- Truck Model
- K1500
- Engine Size
- 305
I am rebuilding my NP 440 out of a 83 K1500 And so far have ran into SEVERAL issues. A huge one is the rarity of this transmission.
My first major obstacle is Bearings. The only bearings that seem to still be in existence for this thing are Chinese manufactured. the first set I had I must have not had enough gear oil in my trans and they burned up. QUICK.
So I found a company in Ft Worth that told me they only use the best bearings in their BK130 kits.. little more expensive but I am a firm believer in you get what you pay for. received the next day and what do you know, the SAME exact Chinese bearing was in that kit. Screw it I will use it. Ok so I reassembled (if you would Like I also have plenty of pics of that too) the tranny And I get the cover on but I notice a couple of gears wont shift, the ones closest to shifter and reverse (1st and 2nd I think). Turns out the keys in the gear wont release? the spring is keeping tension on them.. YAY.. on top of that I read somewhere that the only difference between the MY6 and MM7 versions, other than 2 and 4 wheel drive are the diameter of shift rods. WRONG!!! Thanks to HotRodPC for the info and clearing a lot of stuff up, and it was his Idea to start this thread.. I just used it to throw my initial rant.. Anyways without further adieu, here is all the info any GMSB member can ever need (hopefully) gathered into one location . a spot dedicated just to the bizarre overdrive transmission
My first major obstacle is Bearings. The only bearings that seem to still be in existence for this thing are Chinese manufactured. the first set I had I must have not had enough gear oil in my trans and they burned up. QUICK.
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So I found a company in Ft Worth that told me they only use the best bearings in their BK130 kits.. little more expensive but I am a firm believer in you get what you pay for. received the next day and what do you know, the SAME exact Chinese bearing was in that kit. Screw it I will use it. Ok so I reassembled (if you would Like I also have plenty of pics of that too) the tranny And I get the cover on but I notice a couple of gears wont shift, the ones closest to shifter and reverse (1st and 2nd I think). Turns out the keys in the gear wont release? the spring is keeping tension on them.. YAY.. on top of that I read somewhere that the only difference between the MY6 and MM7 versions, other than 2 and 4 wheel drive are the diameter of shift rods. WRONG!!! Thanks to HotRodPC for the info and clearing a lot of stuff up, and it was his Idea to start this thread.. I just used it to throw my initial rant.. Anyways without further adieu, here is all the info any GMSB member can ever need (hopefully) gathered into one location . a spot dedicated just to the bizarre overdrive transmission