TH350 to NP205 Adapter bearing is it needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

18Z · 06-05-2016, 09:50 PM

Is the bearing in the adapter between the TH350 and NP205 needed, I was told to remove it and don't put it back in because they did away with it in later models because of problems. Any help or info would be great!

**special-K** · 06-06-2016, 07:14 AM

Sounds like pure hog wash. I see more issues having less support than having extra. I never had any issues with a NP205 auto or 4spd and never heard of any issues in all the years these trucks have existed.

cleszkie · 06-06-2016, 06:50 PM

I am not aware of any bearings in the adapter itself. Just the coupler sleeve and oil seals. You want the oil seals because they prevent all your ATF from being pumped into your transfer case. OK, maybe I'm wrong about the bearing. I'm used to the SM465 to NP205 coupler.

87Skier · 06-06-2016, 09:15 PM

There is definitely one in mine. I haven't heard anything of the sort and I wouldn't leave the bearing out.

Orange Crate · 06-06-2016, 09:22 PM

If you need to replace the adapter sleeve you can't get the old style with a stepped shoulder for the bearing, SO when you get your new sleeve just chuck the bearing also. The seals are still in there and work just fine without their bearing friend. Mine ran for years like that. Above all don't sweat it! See here:

http://67-72chevytrucks.com/vboard/s...d.php?t=323994

18Z · 06-07-2016, 05:32 PM

Thanks for all the replies keep them coming! I learn a ton on this forum.

Orange Crate · 06-07-2016, 06:25 PM

Here is a thread from last year, I had posted some pics of the adapter:

http://67-72chevytrucks.com/vboard/s...d.php?t=677988

**special-K** · 06-08-2016, 06:32 AM

Quote:

Originally Posted by 18Z

Thanks for all the replies keep them coming! I learn a ton on this forum.

Me too. I've driven these 4wds a long time and have yet to have a NP205 or coupler need any attention other than fluid change or seals. So, never learned anything about this

06-05-2016, 09:50 PM	#1
18Z Registered User Join Date: Nov 2015 Location: Boise, Idaho Posts: 229	TH350 to NP205 Adapter bearing is it needed Is the bearing in the adapter between the TH350 and NP205 needed, I was told to remove it and don't put it back in because they did away with it in later models because of problems. Any help or info would be great!

06-06-2016, 07:14 AM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: TH350 to NP205 Adapter bearing is it needed Sounds like pure hog wash. I see more issues having less support than having extra. I never had any issues with a NP205 auto or 4spd and never heard of any issues in all the years these trucks have existed. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

06-06-2016, 06:50 PM	#3
cleszkie Registered User Join Date: Feb 2003 Location: Santa Ana, CA Posts: 2,191	Re: TH350 to NP205 Adapter bearing is it needed I am not aware of any bearings in the adapter itself. Just the coupler sleeve and oil seals. You want the oil seals because they prevent all your ATF from being pumped into your transfer case. OK, maybe I'm wrong about the bearing. I'm used to the SM465 to NP205 coupler.

06-06-2016, 09:15 PM	#4
87Skier Registered User Join Date: Mar 2014 Location: Corvallis, OR Posts: 711	Re: TH350 to NP205 Adapter bearing is it needed There is definitely one in mine. I haven't heard anything of the sort and I wouldn't leave the bearing out. __________________ 1972 GMC Jimmy Custom 4.8L (L20)/6L90E/NP205 1989 Chevy Suburban V2500 350/Turbo 400/4.11 gears 1996 Chevy Suburban K1500 350/4L60E

06-06-2016, 09:22 PM	#5
Orange Crate Registered User Join Date: Feb 2011 Location: Under the Truck Dreaming Posts: 661	Re: TH350 to NP205 Adapter bearing is it needed If you need to replace the adapter sleeve you can't get the old style with a stepped shoulder for the bearing, SO when you get your new sleeve just chuck the bearing also. The seals are still in there and work just fine without their bearing friend. Mine ran for years like that. Above all don't sweat it! See here: http://67-72chevytrucks.com/vboard/s...d.php?t=323994 __________________ 72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks...

06-07-2016, 05:32 PM	#6
18Z Registered User Join Date: Nov 2015 Location: Boise, Idaho Posts: 229	Re: TH350 to NP205 Adapter bearing is it needed Thanks for all the replies keep them coming! I learn a ton on this forum.

06-07-2016, 06:25 PM	#7
Orange Crate Registered User Join Date: Feb 2011 Location: Under the Truck Dreaming Posts: 661	Re: TH350 to NP205 Adapter bearing is it needed Here is a thread from last year, I had posted some pics of the adapter: http://67-72chevytrucks.com/vboard/s...d.php?t=677988 __________________ 72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks...



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