The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-02-2018, 07:48 PM   #1
cebra
Registered User
 
Join Date: Jan 2018
Location: Durham, North Carolina
Posts: 782
LS Swap/SWB Conversion Driveshaft

I have found a 2WD NV3500 (Silverado) transmission I am going to pull tomorrow and am having a hard time figuring out a game plan for the driveshaft.

I currently have 350/TH350 LWB with 2 piece driveshaft.
I am converting to 4.8L LS/NV3500 and cutting 12" out of the frame for the SWB conversion.

Should I take the Silverado driveshaft to have cut down or only the front yoke? The NV3500 will sit quite a bit further back than the TH350 and removing 12" I assume I will convert to 1 piece DS. Any recommendations are appreciated.
__________________
My Daily Driver Build: http://67-72chevytrucks.com/vboard/s...d.php?t=755668
cebra is offline   Reply With Quote
Old 11-02-2018, 08:10 PM   #2
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
Re: LS Swap/SWB Conversion Driveshaft

Wait until you have everything installed before you do any d-shaft work...a driveshaft shop will tell you the best way to go...
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 11-02-2018, 08:17 PM   #3
cebra
Registered User
 
Join Date: Jan 2018
Location: Durham, North Carolina
Posts: 782
Re: LS Swap/SWB Conversion Driveshaft

Yeah, I plan to wait until it is all done to get the DS shortened or built but finding a Silverado NV3500 at a junkyard has taken me 7 months so if I need the yoke (or more) then I don't want to leave it as I may not find another.
__________________
My Daily Driver Build: http://67-72chevytrucks.com/vboard/s...d.php?t=755668
cebra is offline   Reply With Quote
Old 11-02-2018, 08:35 PM   #4
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
Re: LS Swap/SWB Conversion Driveshaft

Yeah if your getting the trans from a junkyard then id def grab at least the yoke if not the whole shaft..
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 11-13-2018, 02:40 PM   #5
feller
Registered User
 
feller's Avatar
 
Join Date: Feb 2011
Location: madison, IN.
Posts: 484
Re: LS Swap/SWB Conversion Driveshaft

I would probably take the whole shaft, for the yoke and who knows it might fit the truck Perfectly after the swap.
feller is offline   Reply With Quote
Old 11-13-2018, 04:45 PM   #6
Rich84
Registered User
 
Rich84's Avatar
 
Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,692
Re: LS Swap/SWB Conversion Driveshaft

Quote:
Originally Posted by feller View Post
I would probably take the whole shaft, for the yoke and who knows it might fit the truck Perfectly after the swap.
Old saying..You never know....
I took the driveshaft when I bought a 4l80 from a van for my 6.0 LWB. It fit perfect.
Rich84 is offline   Reply With Quote
Old 11-13-2018, 08:01 PM   #7
sweetk30
Registered User
 
sweetk30's Avatar
 
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
Re: LS Swap/SWB Conversion Driveshaft

if your current shaft is the balloon style ends were it shrinks down to the yokes then you can not reuse them much at all . there more a 1 and done .

now if the newer one or your older one are just std tube the same dia all the way from one yoke to the other no problem . this will be easy for a driveline shop to work with .

i would also grab the rear yoke at a bare minimum for the nv3500 just to know 100% you have a yoke that fits the trans your getting .

and only have the shaft made up / modified once all your mods are done and sitting on ride height . this way you can measure for angles of yokes and length of the shaft .

3 pics i saved from doing my rear shaft on my current 4x4 build .
Attached Images
   
__________________
77-k30lb BIG truck build .
87-k30lb budget beater build .
85-k30lb the plow machine build .
85-c10sb summer fun toy .
-----------------------------
HOLLEY SNIPER efi = worst case of p.i.t.a i ever had .

EDELBROCK pro flo 4 = best deal going so far . love my setup works great.
sweetk30 is offline   Reply With Quote
Old 11-14-2018, 03:38 PM   #8
RedRider
Registered User
 
RedRider's Avatar
 
Join Date: Jan 2016
Location: Poway, CA
Posts: 356
Re: LS Swap/SWB Conversion Driveshaft

When I crunched the numbers, it’s was cheaper for me to buy a new custom driveshaft. I sent my measurements to Southwest Speed and they sent me one with a new slip joint, and adapter joints...done!
__________________
1970 C-10 "Old Yeller"
RedRider is offline   Reply With Quote
Old 11-14-2018, 09:02 PM   #9
nsb29
Senior Member
 
nsb29's Avatar
 
Join Date: Feb 2014
Location: new smyrna beach fl / 29 palms cal
Posts: 1,727
Re: LS Swap/SWB Conversion Driveshaft

Quote:
Originally Posted by RedRider View Post
When I crunched the numbers, it’s was cheaper for me to buy a new custom driveshaft. I sent my measurements to Southwest Speed and they sent me one with a new slip joint, and adapter joints...done!
I did the same thing got mine from Dan’s driveshaft half of what the local guy Wanted
nsb29 is offline   Reply With Quote
Old 12-12-2018, 04:06 PM   #10
cebra
Registered User
 
Join Date: Jan 2018
Location: Durham, North Carolina
Posts: 782
Re: LS Swap/SWB Conversion Driveshaft

To anyone that needs to know, the NV3500 (SWB Regular Cab Silverado 1500) driveshaft is 2" too long on a SWB C-10 with the TH350 so it will be way long once I put the NV3500 in. Worth a shot, I will just end up having the NV3500 DS cut down as it should mate up on both the yoke and rear u-joint if my research is correct. I paid $75 for the DS so I will probably come out ahead just having it cut down rather than a new DS made.
__________________
My Daily Driver Build: http://67-72chevytrucks.com/vboard/s...d.php?t=755668
cebra is offline   Reply With Quote
Old 12-14-2018, 08:00 PM   #11
sweetk30
Registered User
 
sweetk30's Avatar
 
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
Re: LS Swap/SWB Conversion Driveshaft

look up these guys almost in your area if you dont have one closer . i know lots of 4x4 off road guys have used them in the past . i chatted with them years ago at there orignal shop when i was down there .

https://oliversdriveshaft.com/
__________________
77-k30lb BIG truck build .
87-k30lb budget beater build .
85-k30lb the plow machine build .
85-c10sb summer fun toy .
-----------------------------
HOLLEY SNIPER efi = worst case of p.i.t.a i ever had .

EDELBROCK pro flo 4 = best deal going so far . love my setup works great.
sweetk30 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:16 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com