4 speed driveshaft question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gregg72340 · 08-25-2010, 07:12 PM

Does anyone know if there is a difference between a 4 speed driveshaft for 1/2 ton vs. one from a 3/4 ton? Both trucks are 8 ft bed trucks. Both trucks are leaf spring trucks.
Thanks

Shyguy · 08-25-2010, 08:06 PM

I put a 3/4 ton driveshaft out of '67 into a 1/2 frame with the 1/2 rearend. I had to get what some calls a "jump" u-joint in to match the 3/4 ton driveshaft to the half ton rearend.

I like the 3/4 ton driveshaft better because it has a heavier carrier bearing.

gregg72340 · 08-27-2010, 11:51 AM

Quote:

Originally Posted by Shyguy

I put a 3/4 ton driveshaft out of '67 into a 1/2 frame with the 1/2 rearend. I had to get what some calls a "jump" u-joint in to match the 3/4 ton driveshaft to the half ton rearend.

I like the 3/4 ton driveshaft better because it has a heavier carrier bearing.

Do you remember where you got the u-joint? was it something a place like Napa helped yu with or through one of the vendors?

Thanks
Gregg

LONGHAIR · 08-27-2010, 11:57 AM

"Conversion" joints should be available at your local NAPA or if you live in a big enough city to have a driveline/clutch shop, they will have them too.
You might get them at a "chain store" if you already know the part number.....

Shyguy · 08-27-2010, 05:17 PM

I got the one for my truck at a Fisher's Auto Parts, also some places called Federated.

08-25-2010, 07:12 PM	#1
gregg72340 Registered User Join Date: May 2010 Location: ambler, pa Posts: 325	4 speed driveshaft question Does anyone know if there is a difference between a 4 speed driveshaft for 1/2 ton vs. one from a 3/4 ton? Both trucks are 8 ft bed trucks. Both trucks are leaf spring trucks. Thanks __________________ Just would like the snow to stop so I can actually work on my truck!!!!!!!!!!! Last edited by gregg72340; 08-25-2010 at 07:18 PM.

08-25-2010, 08:06 PM	#2
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: 4 speed driveshaft question I put a 3/4 ton driveshaft out of '67 into a 1/2 frame with the 1/2 rearend. I had to get what some calls a "jump" u-joint in to match the 3/4 ton driveshaft to the half ton rearend. I like the 3/4 ton driveshaft better because it has a heavier carrier bearing. __________________ '67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E.

08-27-2010, 05:17 PM	#5
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: 4 speed driveshaft question I got the one for my truck at a Fisher's Auto Parts, also some places called Federated. __________________ '67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.