Upper and Lower Shafts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hot!rod · 03-09-2005, 12:25 PM

I am about to do the 4/6 drop. I will be changing the bearings, seals, ball joints, upper bushings, etc. BUT should I change the upper and lower shafts? I've never changed them and not real sure why I should but I'm sure someone else knows. They don't look like they will be much fun. I get pretty decent prices at the local parts store, but not gonna change it unless it's needed. Anybody know anything ahead of time that they need to tell/warn me? I know the typical ball joint routine. I kinda dread the bushings though. I've never had a set of those go smoothly. Oh yeah, I will be changing the idler arm, pitman arm, rod ends, etc. as well.

Any input?
Thanx,
Brad

Frank_Zeller · 03-09-2005, 04:32 PM

Not hard to install......buy the sockets to fit the caps. I bet there worn. To check... Assemble with no coil spring. Then move the arms up and down while pushing front to back. Dont grease them. The grease can mask some of the slop. The TRW shafts are 30 to 35 dollars each at advance auto parts. Think someone did a write up in the FAQ section.

hot!rod · 03-13-2005, 04:33 PM

Okay getting ready to reassemble the left side. I read where I shouldn't torque the shaft bushings until it's been aligned. Is that for the lowers, too? It just looks to me like when you torque the bushings, that will put the shaft's threads in a bind and keep them from traveling. I can't figure out what does the moving during suspension travel. Is it the threads on the cross shaft? Can someone please clear the fog on this one?
Thanks,
Brad

hot!rod · 03-14-2005, 10:43 AM

Anyone?

TTT

Frank_Zeller · 03-14-2005, 11:07 AM

See the post in the FAQ section. Lots of other good info there too http://67-72chevytrucks.com/vboard/s...d.php3?t=20551

03-09-2005, 12:25 PM	#1
hot!rod Registered User Join Date: Feb 2005 Location: Northeast TX Posts: 58	Upper and Lower Shafts I am about to do the 4/6 drop. I will be changing the bearings, seals, ball joints, upper bushings, etc. BUT should I change the upper and lower shafts? I've never changed them and not real sure why I should but I'm sure someone else knows. They don't look like they will be much fun. I get pretty decent prices at the local parts store, but not gonna change it unless it's needed. Anybody know anything ahead of time that they need to tell/warn me? I know the typical ball joint routine. I kinda dread the bushings though. I've never had a set of those go smoothly. Oh yeah, I will be changing the idler arm, pitman arm, rod ends, etc. as well. Any input? Thanx, Brad __________________ Why do we drive on a parkway and park on a driveway?

03-09-2005, 04:32 PM	#2
Frank_Zeller Registered User Join Date: Jun 2001 Location: Austin, Texas Posts: 796	Not hard to install......buy the sockets to fit the caps. I bet there worn. To check... Assemble with no coil spring. Then move the arms up and down while pushing front to back. Dont grease them. The grease can mask some of the slop. The TRW shafts are 30 to 35 dollars each at advance auto parts. Think someone did a write up in the FAQ section. __________________ 69 SWB C/10 5-6 drop 700R4 69 Firebird Convert 455 4 spd 70 Torino GT Convert Austin-Texas

03-13-2005, 04:33 PM	#3
hot!rod Registered User Join Date: Feb 2005 Location: Northeast TX Posts: 58	Okay getting ready to reassemble the left side. I read where I shouldn't torque the shaft bushings until it's been aligned. Is that for the lowers, too? It just looks to me like when you torque the bushings, that will put the shaft's threads in a bind and keep them from traveling. I can't figure out what does the moving during suspension travel. Is it the threads on the cross shaft? Can someone please clear the fog on this one? Thanks, Brad __________________ Why do we drive on a parkway and park on a driveway?

03-14-2005, 10:43 AM	#4
hot!rod Registered User Join Date: Feb 2005 Location: Northeast TX Posts: 58	Anyone? TTT __________________ Why do we drive on a parkway and park on a driveway?

03-14-2005, 11:07 AM	#5
Frank_Zeller Registered User Join Date: Jun 2001 Location: Austin, Texas Posts: 796	See the post in the FAQ section. Lots of other good info there too http://67-72chevytrucks.com/vboard/s...d.php3?t=20551 __________________ 69 SWB C/10 5-6 drop 700R4 69 Firebird Convert 455 4 spd 70 Torino GT Convert Austin-Texas

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