It's too bad you didn't find an '81-'84 SM465/NP208 donor truck. This would have been much simpler.
Martin
Martin
CK5
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Mandarb
- Thread starter KSSIII
- Start date
KSSIII
Registered Member
that would have been too perfect haha
I have an '85 SM465 sitting in my barn right now. 6-bolt round-pattern T-case output, standardized length adapter (you can reuse your original, good driveshafts and T-case).
I'm keeping the hydraulic bell housing, cross member, and T-case, but I have no use for the tranny or adapter. And it just might make your life a bunch easier if I'm not too late.
P.S. - the Adapter does not appear to be cracked, either.
KSSIII
Registered Member
I have an '85 SM465 sitting in my barn right now. 6-bolt round-pattern T-case output, standardized length adapter (you can reuse your original, good driveshafts and T-case).
I'm keeping the hydraulic bell housing, cross member, and T-case, but I have no use for the tranny or adapter. And it just might make your life a bunch easier if I'm not too late.
P.S. - the Adapter does not appear to be cracked, either.
I hoping I don't have to swap the transmission again for at least a year. I pretty much have it all put together, and hopefully tommorrow can movev it
KSSIII
Registered Member
Just need a whole new mechanical clutch set up, the one i have to work with is junk
KSSIII
Registered Member
I'm having a little trouble setting up the mechanism from the bell crank to the clutch fork. I just need a whole new mechanical linkage kit
Or look for a hydraulic setup.
Martin
Martin
What would that change?
KSSIII
Registered Member
From what I have to work with, it's just not working out I'd have to send a picture, the rod keeps slipping off the fork and the pedal dosent return all the way sometimes.
I use a small spring to keep the clutch rod on the fork. It's never given me trouble
KSSIII
Registered Member
How likely is it that the transmission was regeared,... comming from a mudtruck
There are no alternate gear ratio options for an SM465.
KSSIII
Registered Member
I hope so, the rpms just seem higher than they should be. I wonder if it's a common thing for murders to swap out the gears in a transmission for mudding purposes
That would be set by the axle gearing & tire size. The tranny ratios aren't adjustable, and I'm not aware of any alternative gear sets for the SM465 case.
Aim for higher gears (smaller number) or larger tires if you want to get the engine speed down. Or switch to an O/D transmission like I did.
What is your current axle ratio?
KSSIII
Registered Member
Still got the original axel in 3.08
Running stock 31" tires? That should be a decent combination. It's a little high for a street cruising machine, but not too bad. My K10 runs 3.08s with 29" tires and a 0.7 overdrive, but that is the economy cruising package, not the tow rig package.
Did you have the truck running with the original TH400? That would have been spinning faster yet due to the non-locking torque converter.
KSSIII
Registered Member
I drove it home with the th400, yeah it's weird, this thing is still kicking my ass lol
