Venanzi85
Registered Member
Anyone tell me what kind of transfer case is in my truck trying to find out so I can get a proper estimate on a custom rear driveshaft install
CK5
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Transfer case ?
- Thread starter Venanzi85
- Start date
Looks like the NP203. Full time transfer case. Chain drive.
For a driveshaft they usually they want a yoke to yoke measurement. Might contact the builder and see what they need.
For a driveshaft they usually they want a yoke to yoke measurement. Might contact the builder and see what they need.
Venanzi85
Registered Member
They are going to convert to a CV style flange
Venanzi85
Registered Member
They are going to convert to a CV style flange
np203 . the yoke on the rear will be swapped out for a flat flange . then the shaft will bolt to it .
i know guys do the ford super duty front shaft upgrade for a budget priced rear c/v shaft . but if you are not super technical then this might not be a project for you .
you will need to dial in the rear pinion angle tho to work with the c/v shaft .
i know guys do the ford super duty front shaft upgrade for a budget priced rear c/v shaft . but if you are not super technical then this might not be a project for you .
you will need to dial in the rear pinion angle tho to work with the c/v shaft .
Venanzi85
Registered Member
Yea thanks for fast response guys let them know it’s a 203 for everything it’s about 1k for parts and labor it’s at another shop now and going to take to them to do the work
What year is your truck ? In your other thread I had been using 1985 model year for my answers. Assuming 85 in your name was the year. So many of my post may not be accurate.
Venanzi85
Registered Member
77, sorry 85 is my birth year just my user name for everything lol
No worries. What I get for assuming lol.
I have a 77, I didn't want full time 4x4 so I put a np205 in mine.
When is was a young adult the family had 78 fulltime suburban with small block 400.
Gas mileage was about the same, as mine with part time. Even with the non alcohol fuel, back then.
I have a 77, I didn't want full time 4x4 so I put a np205 in mine.
When is was a young adult the family had 78 fulltime suburban with small block 400.
Gas mileage was about the same, as mine with part time. Even with the non alcohol fuel, back then.
Venanzi85
Registered Member
I know this is a stupid question by looking at the picture what type of rear end I see it’s a 12 bolt
Should be the 12 bolt. Would be correct for a 77.
Venanzi85
Registered Member
Body blocks have been removed w new mounts and hardware now to the driveshaft shop and install new front bumper
ya 12 bolt truck rear .....
but who molded the fender flairs to the body ? ? ? ...... 1980's show truck called and wants there mod back .
please fix her up the right way and show her off correctly .
but who molded the fender flairs to the body ? ? ? ...... 1980's show truck called and wants there mod back .
please fix her up the right way and show her off correctly .
Might be a dumb question but where did u get that it is a NP 203 from these pics?
Venanzi85
Registered Member
I totally agree with you, they will be coming off for sure, even if I have to cut them off
guys who have worked with / played with / wrenched on / scrapped out . . . we know .
bolt on HUGE tail housing and fixed yoke with case iron body = np203 in our trucks .
As many times as i have removed and installed the one in my blazer, you don't forget. Stupid heavy.
Has the rear tail housing that holds the differential portion that allows the full time function. That piece is made of aluminum, but everything else is cast iron. It is also where one would install the part time kit, if doing so by replacing part of the spiders.
Also has the drain plug in the center between the two cover holes. The NP205 would have the 3 bolt cover that covers the end of the shaft for the center gear. The 203 doesn't have the shaft or cover because it's a chain drive case.
On the left/drivers side you can see the gear reduction portion in front of the chain drive case that allows for the high/low function.
It would also be correct for that year truck as, I believe, only the 203 and 205 were available.
Also looks like I can see shift linkage for an automatic transmission. If so, was very typical for the np203 to be mated to the th350 transmission. Not a guarantee, but a very common combination.
Has the rear tail housing that holds the differential portion that allows the full time function. That piece is made of aluminum, but everything else is cast iron. It is also where one would install the part time kit, if doing so by replacing part of the spiders.
Also has the drain plug in the center between the two cover holes. The NP205 would have the 3 bolt cover that covers the end of the shaft for the center gear. The 203 doesn't have the shaft or cover because it's a chain drive case.
On the left/drivers side you can see the gear reduction portion in front of the chain drive case that allows for the high/low function.
It would also be correct for that year truck as, I believe, only the 203 and 205 were available.
Also looks like I can see shift linkage for an automatic transmission. If so, was very typical for the np203 to be mated to the th350 transmission. Not a guarantee, but a very common combination.
Last edited:
Venanzi85
Registered Member
Thank you this has been really informative why I asked thank you again
No problem.
Be aware they are very heavy and very awkward to remove/install. Especially on a floor jack. A proper transmission jack
helps, but still a struggle.
