72 LWB Driveshaft advice needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Mac the Yankee · 08-22-2019, 10:15 PM

I'm working on getting my '72 LWB (stock 307 and three-on-the-tree) on the road and want to get your input-

Should I try to find a newer 2 piece shaft at the local pull-a-part or rebuild my stock unit? If it means finding a newer unit, what fits?

Thanks, Bill

(aka, Mac the Yankee)

**special-K** · 08-23-2019, 06:27 AM

Rebuild. The one at pick-n-pull is of unknown condition but we know it's as old as yours.

Mac the Yankee · 08-23-2019, 03:37 PM

Thank you for the response special-K!

And I apologize if I wasn't being clear in the question-

Is there a newer model 2 piece drive shaft that will swap out/bolt in (e.g. 88-98, etc) and be a smart upgrade, or should I just stay with what I have? Happy to keep the stock unit and rebuild, but don't want to spend money 2x if the upgrade is a better choice.

60's kid · 08-24-2019, 03:52 PM

I swapped out the Saginaw 3 speed in my LWB 67 GMC C20 for an SM465 over 30 years ago. I had a longer front of the 2 pc. made to fit the shorter trans. I failed to mark and keep the shaft and yoke I took out. I've still got the 3 speed and a 4 speed I'd like to use but I don't want to cut the shaft I had made. It would be great to hear there's another option for me besides building a new one or digging for an old stock but since you've got it I vote rebuild it. Cheers.

08-22-2019, 10:15 PM	#1
Mac the Yankee Registered User Join Date: Nov 2012 Location: Winder, GA Posts: 274	72 LWB Driveshaft advice needed I'm working on getting my '72 LWB (stock 307 and three-on-the-tree) on the road and want to get your input- Should I try to find a newer 2 piece shaft at the local pull-a-part or rebuild my stock unit? If it means finding a newer unit, what fits? Thanks, Bill (aka, Mac the Yankee)

08-23-2019, 06:27 AM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: 72 LWB Driveshaft advice needed Rebuild. The one at pick-n-pull is of unknown condition but we know it's as old as yours. __________________ "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 ~

08-23-2019, 03:37 PM	#3
Mac the Yankee Registered User Join Date: Nov 2012 Location: Winder, GA Posts: 274	Re: 72 LWB Driveshaft advice needed Thank you for the response special-K! And I apologize if I wasn't being clear in the question- Is there a newer model 2 piece drive shaft that will swap out/bolt in (e.g. 88-98, etc) and be a smart upgrade, or should I just stay with what I have? Happy to keep the stock unit and rebuild, but don't want to spend money 2x if the upgrade is a better choice.

08-24-2019, 03:52 PM	#4
60's kid Registered User Join Date: Apr 2017 Location: S.E. Indiana Posts: 2	Re: 72 LWB Driveshaft advice needed I swapped out the Saginaw 3 speed in my LWB 67 GMC C20 for an SM465 over 30 years ago. I had a longer front of the 2 pc. made to fit the shorter trans. I failed to mark and keep the shaft and yoke I took out. I've still got the 3 speed and a 4 speed I'd like to use but I don't want to cut the shaft I had made. It would be great to hear there's another option for me besides building a new one or digging for an old stock but since you've got it I vote rebuild it. Cheers.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.