SWB Conversion Driveshaft - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cebra · 11-09-2018, 08:40 PM

I have some unique issues with my build as I have limited access to power. With this said, I am doing a SWB conversion in stages. My issue is that once I cut the frame and weld it up I cannot let the truck sit to have the driveshaft cut down (only option is to tow it 20 miles and install driveshaft on the roof of my parking garage). I know where there is a 1968 396/manual trans SWB truck that has a driveshaft. My truck is a 71 350/350 LWB. Does anyone know if this driveshaft would fit once mine has the 12" removed (length/spline/etc)? I have searched a lot and my head is spinning trying to figure this out.

Also related, I am putting in a NV3500 (as soon as I find that unicorn) down the road so if my only option is to cut the DS down now should I convert to 1 piece DS now get it cut down for SWB and then have it cut down again for NV or just have the 2 piece cut down now for SWB and go to 1 piece when I get the longer trans? Thanks.

**HO455** · 11-09-2018, 10:12 PM

You may not have noticed you posted this in the Suburban section. There are only a couple of SWB Burbans around (see Frizzlefry's Tahoe build). You will get more help on the pickup side. Ask a moderator to move your thread.
Good luck.

**LockDoc** · 11-10-2018, 11:41 AM

-
Moved.

LockDoc

72LB · 11-11-2018, 08:59 AM

I have a th400 currently in my shortbed and am going to a th350 and doing a one piece driveshaft. One of our club members used a driveshaft from a 95 Chevy c1500 with a 5 speed NV3500, it was pretty much a bolt in just had to change the yoke. I'm not sure if it will help but might give you a starting point of sorts.

11-09-2018, 08:40 PM	#1
cebra Registered User Join Date: Jan 2018 Location: Durham, North Carolina Posts: 782	SWB Conversion Driveshaft I have some unique issues with my build as I have limited access to power. With this said, I am doing a SWB conversion in stages. My issue is that once I cut the frame and weld it up I cannot let the truck sit to have the driveshaft cut down (only option is to tow it 20 miles and install driveshaft on the roof of my parking garage). I know where there is a 1968 396/manual trans SWB truck that has a driveshaft. My truck is a 71 350/350 LWB. Does anyone know if this driveshaft would fit once mine has the 12" removed (length/spline/etc)? I have searched a lot and my head is spinning trying to figure this out. Also related, I am putting in a NV3500 (as soon as I find that unicorn) down the road so if my only option is to cut the DS down now should I convert to 1 piece DS now get it cut down for SWB and then have it cut down again for NV or just have the 2 piece cut down now for SWB and go to 1 piece when I get the longer trans? Thanks. __________________ My Daily Driver Build: http://67-72chevytrucks.com/vboard/s...d.php?t=755668

11-09-2018, 10:12 PM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,803	Re: SWB Conversion Driveshaft You may not have noticed you posted this in the Suburban section. There are only a couple of SWB Burbans around (see Frizzlefry's Tahoe build). You will get more help on the pickup side. Ask a moderator to move your thread. Good luck. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

11-10-2018, 11:41 AM	#3
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,327	Re: SWB Conversion Driveshaft - Moved. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

11-11-2018, 08:59 AM	#4
72LB Registered User Join Date: May 2017 Location: Inman/Boiling Springs, SC Posts: 420	Re: SWB Conversion Driveshaft I have a th400 currently in my shortbed and am going to a th350 and doing a one piece driveshaft. One of our club members used a driveshaft from a 95 Chevy c1500 with a 5 speed NV3500, it was pretty much a bolt in just had to change the yoke. I'm not sure if it will help but might give you a starting point of sorts. __________________ 1985 C10 shortbed, current project. Member of the Upstate SC GM Truck Club.



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