np203

  1. K

    What is the best th350 rebuild kit?

    I have a 74 K20 with a th350 that ate my first/reverse clutch. I was wondering what you all have done in the past as far as tips and tricks, kits used, and what not to do. As of now I will be rebuilding the transmission myself unless I can find a reasonable replacement. Any way mostly curious...
    • Kalem
    • Thread
    • automatic transmission np203 th350 transmission
    • Replies: 1
    • Forum: Tech Discussion
  2. Big red square

    Transmission paint

    Has anyone painted the th350 and np203 transfer case. Want just regular silver like a factory semi shiny look.
  3. iamtherealJayy

    NP203 to NP208 swap?

    I have a 1976 Chevrolet K10 with a 350 and I believe TH350, it has an NP203 tcase that I want to eliminate for better fuel mileage(truck is being built to be a cruiser that can drive wherever whenever) i recently traded off my 1981 Frankenstein for an 86 k10 Silverado and an 80’s k20 frame. The...
  4. rwljpl

    4l65e and NP203

    I’m looking at swapping out the TH350 3 speed in my truck for a 4L65e. Transfer case is NP203. Is it possible to make this work? What are the challenges going to be?
  5. Zayshley

    '76 K1500 NP203 to NP205 swap

    I just recently bought a NP205, that was bolted to a 400/th350 in a '80 Blazer, that I plan in putting in my truck to replace the beat NP203 which has the locking hubs conversion kit. Besides drive shafts, is there anything else I need to make it work?
  6. B

    Another np203 Mysterious Popping Noise

    86 k10 350th Np203 Recently a buddy and I tore down the front end and replaced axle u joints, all new ball joints, repacked bearings, and installed a new lockout hub on the passenger side. Trucks been driving great except I’m getting a popping noise from the passenger front when Turning on...
  7. D

    Linkage Np203

    Lost linkage somewhere for a 78 k10..anyone help me with where I can get one?
  8. AyWoSch Motors

    Burnouts with a NP203 full time 4wd?

    So I have an odd question. I have a '74 K5 Blazer with a big block 454, Muncie SM465 4 speed, a NP203 full time 4wd, full time front hubs, and a GM 14 bolt rear end. The odometer for the truck says 10k, but I've done the math, and I'm pretty sure it has about 310k (rolled over 3 times) Now my...
  9. devin bianco

    quick question, full time to locking hubs (k10 10 bolt)

    I am doing the 203 to 205 swap on my 79, soon enough the front axle is going to be rebuilt and i know i will need t install a manual locking hub kit (currently has no hub locking mechanism). when i look it up, all i see is part time 203 kits that include the hubs. In this case will i just need a...
  10. devin bianco

    Np203 to Np205 , transfer case swap

    this might have been talked about before, but it would be nice for some clear information on it. first here are some specs: Ive got a 79 k10, sb350 going to a th350 going to a np203 full time no slip yoke. we are doing a np205 swap, we have the truck down to frame with no current drivetrain...
    • devin bianco
    • Thread
    • driveshafts help linkage np203 np205 np208 swap t-case th350 transfer case
    • Replies: 24
    • Forum: Transfer Case

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