Adapter 700 to a 350 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vht · 12-18-2016, 11:26 PM

If anyone has or knows where I can get just the adapter, spacer, to go from a 700R to a 350 turbo, please message me. Found the complete TCI kit, but if I could get the spacer separate it'd be great, thanks.

D13 · 12-19-2016, 10:03 AM

2wd 4wd?
2wd, get a TH350 drive shaft, we made millions of 2wd with TH350, vacuum T and hose, and a kickdown cable and carb fitting.

4wd, if you don't want to move the Tcase and play with driveshaft lengths, you need an adapter, and depending, to change the 350's output shaft to get the correct length. At least I know thats how we did it on the S10 blazer.

vht · 12-19-2016, 01:49 PM

4WD, I know, that's the adapter I'm referring too. TCI has a kit, PT # 329900, but I was hoping to just find the spacer and cut my rear shaft. May have to bite the bullet and buy the kit. Thanks for the response.

**hatzie** · 12-19-2016, 05:55 PM

What transfer case are you trying to mount?

The common TH350 is setup for the NP205 or NP203. The TH700R4 to NP208 NP241 adapter will bolt up to the TH350 but the output shaft will not reach the transfer case input splines.
There was a rare TH350 version in the early 1980's that has a longer output shaft for the NP208. The TCI kit contains this longer output shaft and a few other parts needed for the swap.

vht · 12-19-2016, 10:15 PM

I thought from what everyone said that the rear sfaft was to long, and you could cut it off. I'll more than likely go with the TCI kit, I can get it through Summit Pro Shop for $180. Thanks for the info.

**hatzie** · 12-19-2016, 11:12 PM

Quote:

Originally Posted by vht

I thought from what everyone said that the rear sfaft was to long, and you could cut it off. I'll more than likely go with the TCI kit, I can get it through Summit Pro Shop for $180. Thanks for the info.

It depends on the TH350 build year.
If it's attached to the NP203 it has a short shaft. The NP205 was used through the 80's so it's a guess. Measure it.

vht · 12-20-2016, 08:49 AM

It's a short tail 350 out of a car. If memory serves me right, we cut 1 1/2 off the tails haft and used them in 4x4. We used the 9 in in 2WD.

b454rat · 12-20-2016, 08:52 AM

I have a kit to adapt 700 to 350, never used it. I can't think of the kit, was a common one in the 90s and early 2000s I believe. I can get pics any part number if interested.

vht · 12-20-2016, 06:19 PM

b454rat, PM sent, and thanks.

12-18-2016, 11:26 PM	#1
vht Registered User Join Date: Jun 2013 Location: Brooksville Ky Posts: 531	Adapter 700 to a 350 If anyone has or knows where I can get just the adapter, spacer, to go from a 700R to a 350 turbo, please message me. Found the complete TCI kit, but if I could get the spacer separate it'd be great, thanks.

12-19-2016, 10:03 AM	#2
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: Adapter 700 to a 350 2wd 4wd? 2wd, get a TH350 drive shaft, we made millions of 2wd with TH350, vacuum T and hose, and a kickdown cable and carb fitting. 4wd, if you don't want to move the Tcase and play with driveshaft lengths, you need an adapter, and depending, to change the 350's output shaft to get the correct length. At least I know thats how we did it on the S10 blazer. __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

12-19-2016, 01:49 PM	#3
vht Registered User Join Date: Jun 2013 Location: Brooksville Ky Posts: 531	Re: Adapter 700 to a 350 4WD, I know, that's the adapter I'm referring too. TCI has a kit, PT # 329900, but I was hoping to just find the spacer and cut my rear shaft. May have to bite the bullet and buy the kit. Thanks for the response.

12-19-2016, 05:55 PM	#4
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,968	Re: Adapter 700 to a 350 What transfer case are you trying to mount? The common TH350 is setup for the NP205 or NP203. The TH700R4 to NP208 NP241 adapter will bolt up to the TH350 but the output shaft will not reach the transfer case input splines. There was a rare TH350 version in the early 1980's that has a longer output shaft for the NP208. The TCI kit contains this longer output shaft and a few other parts needed for the swap. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

12-19-2016, 10:15 PM	#5
vht Registered User Join Date: Jun 2013 Location: Brooksville Ky Posts: 531	Re: Adapter 700 to a 350 I thought from what everyone said that the rear sfaft was to long, and you could cut it off. I'll more than likely go with the TCI kit, I can get it through Summit Pro Shop for $180. Thanks for the info.

12-20-2016, 08:49 AM	#7
vht Registered User Join Date: Jun 2013 Location: Brooksville Ky Posts: 531	Re: Adapter 700 to a 350 It's a short tail 350 out of a car. If memory serves me right, we cut 1 1/2 off the tails haft and used them in 4x4. We used the 9 in in 2WD.

12-20-2016, 08:52 AM	#8
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,461	Re: Adapter 700 to a 350 I have a kit to adapt 700 to 350, never used it. I can't think of the kit, was a common one in the 90s and early 2000s I believe. I can get pics any part number if interested. __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS

12-20-2016, 06:19 PM	#9
vht Registered User Join Date: Jun 2013 Location: Brooksville Ky Posts: 531	Re: Adapter 700 to a 350 b454rat, PM sent, and thanks.



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