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: 11,350	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),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 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: 25,771	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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