Hottytoddy06
Junior Member
- Joined
- Nov 24, 2014
- Posts
- 23
- Reaction score
- 18
- Location
- MS
- First Name
- Matt
- Truck Year
- 1984
- Truck Model
- K20
- Engine Size
- 350
Hello all! I have a 1984 K20 with a newly rebuilt sbc 350. Not sure on the new total hp but motor was bored .40 over, mild cam, new carb, intake, long tube headers, etc.
My current setup is the Sm465 and Np 205 TCase. I recently had both of those re-kitted with all new seals/gaskets.
I recently freshened up the front end myself with all new tie-rods, inner and outer wheel bearings, and also upper and lower ball joints (<—— pain in the ass might I add!!) on both sides.
I tore into the rear end (14b SF 9.5” open diff) yesterday with intentions of replacing the wheel bearings only to find two teeth broken/chipped on the ring gear. I pulled the r&p gears and carrier and was surprised to find a 3.23 gear ratio (wth??).
Now I’m planning on regearing and was curious to know your recommendations. This truck is a farm truck and I sometimes use it to pull my 30-35hp tractors. Currently has 35” buckshots and has seemed to do well in the past. I plan to eventually put 6”-8” lift and possibly run 37”-38” tires.
Not much highway driving or off roading other than at deer camp. This was my late grandfather’s truck who passed it down to me and one that I will never part with. It is more of a fun project and way that I can remember spending time with him when I’m working on it.
Was looking at going back with 4.11, 4.56, or even 4.88?? Also considering throwing in a Detroit true trac Torsen locker while I’m there. Plan on tackling the front (GM corporate 10) next as I have not yet busted the cover off yet.
What do you guys think?
My current setup is the Sm465 and Np 205 TCase. I recently had both of those re-kitted with all new seals/gaskets.
I recently freshened up the front end myself with all new tie-rods, inner and outer wheel bearings, and also upper and lower ball joints (<—— pain in the ass might I add!!) on both sides.
I tore into the rear end (14b SF 9.5” open diff) yesterday with intentions of replacing the wheel bearings only to find two teeth broken/chipped on the ring gear. I pulled the r&p gears and carrier and was surprised to find a 3.23 gear ratio (wth??).
Now I’m planning on regearing and was curious to know your recommendations. This truck is a farm truck and I sometimes use it to pull my 30-35hp tractors. Currently has 35” buckshots and has seemed to do well in the past. I plan to eventually put 6”-8” lift and possibly run 37”-38” tires.
Not much highway driving or off roading other than at deer camp. This was my late grandfather’s truck who passed it down to me and one that I will never part with. It is more of a fun project and way that I can remember spending time with him when I’m working on it.
Was looking at going back with 4.11, 4.56, or even 4.88?? Also considering throwing in a Detroit true trac Torsen locker while I’m there. Plan on tackling the front (GM corporate 10) next as I have not yet busted the cover off yet.
What do you guys think?
