school me on SM465 rebuilds / upgrades (mate to a D300)

[Chuckman]

going to put a SM465 in front of a D300 for a wheeler. Will go novak adapter, AA isnt getting another $ of mine. I have 3x SM465's in unknown condition that are complete but 2wd versions. I have 2x D300s that I will rebuild and put behind but clock and keep pass drop. Im good on the D300 and how to twin stick it ( have done one with cables and one with levers). Clocking I understand and have done.

What I dont know is the SM465 and its third gear issues. What is the best remedy for this if your planning on a complete rebuild?. Also what tricks to rebuild and what to pay attention to? Ive rebuilt manual trans and am no stranger to that either, its just that it pays to ask the NC4x4 crowd. Also who has the best rebuild kits etc?

 

[GubNi]

@1-tonmudder is the expert on those transmissions

 

[ckruzer]

kits
SM465 4 speed GMC and Chevrolet Rebuilt Manual Transmission, Upgrades and Parts| SM465 Midwest Trans Center no hassle warranty


you can ship and have these guys rebuild if your interested. but more so you can call and pick their brains
Anaheim Gear Manual Transmission Parts and Services

If i recall, the 3rd gear upgrade is as simple as a spacer used. cant find my linnk i had saved about the upgrades

 

[R Q]

Novak has tons of info on them including parts diagram, rebuilding notes etc..

 

[YotaOnRocks]

I have a 4wd sm465 laying around. I used the top plate with all the shift levers to replace the one in my old truck that was all screwed up. If you need it for parts where it's 4wd let me know.