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Re: "Patricks' Tech Tip Article [Re: posey] #1318352 Fri Jul 19 2019 07:43 AM
Joined: May 2005
Posts: 6,275
B
bartamos Offline
Master Gabster
All those points can be address fairly easily. Starting with 51 and up are bendix. Brake jobs are very easy and cheap. Not like open swap has never been done. I have a hunch that Sweet and Tim had good professional help and they are not slouches either. A different persons time, smoothness and expense may differ.
If someone wants to maintain the closed driveshaft/drop out diff system. They can move forward with the fine tech tips. Just mentioning another option.


I'm away on an ego trip. Will be back on Feb 30.
I'm not an Auto Mechanic, but I play one on TV.
I charge $0.02 for every opinion and I take Paypal.


Re: "Patricks' Tech Tip Article [Re: posey] #1318358 Fri Jul 19 2019 11:38 AM
Joined: Aug 2004
Posts: 1,363
SWEET Offline
ODSS Lawman
The 3:55 year swap is a project you can do over a weekend. IF you aquire the bearings, bushing, and seals. When I did my rear end I also was given tools like carrier wrenches. These simple tools made the job that much easier. I used MT’s rationale when deciding what to do. In my case, I replaced the gears when I had it apart due to a pinion bearing failure.

I too have a copy of Patrick’s instructions. Same poor copy quality.


SWEET
Sergeant At Arms
Old Dominion Stovebolt Society

BUNS?!?!?! Where we're going, we don't need no buns.....

1950 GMC 450 (25% owner)
1951 Chevy 1/2-Ton
The GreenMachine
In the Stovebolt Gallery
Re: "Patricks' Tech Tip Article [Re: posey] #1318365 Fri Jul 19 2019 12:35 PM
Joined: Jun 2017
Posts: 97
P
posey Offline OP
Shop Shark
Thank you for all the comments, all helpful, will try to sift through the best and least complicated but thorough as possible. My 54 1/2 ton as some of you know have
completed a complete aesthetic and mechanical restoration with exception of the driveline (yeah I know should have done it sooner but shoulda- woulda).

I can tolerate the limited speeds but the driveshaft vibration is tough to take until I do it. I believe I have acquired the most difficult to find part which is a
good 53 gear carrier. Have to acquire the rest in time. Wish I could do it now, the full resto budget was a killer.

Have decided to pull the entire torque tube and carrier assy out, (seems easier to adjust run-out, backlash and ring and pinion contact.

Hate to spend another $500 for the kit if bearings are in decent shape. Anyone know if shims have become available somewhere.

Re: "Patricks' Tech Tip Article [Re: posey] #1318366 Fri Jul 19 2019 12:36 PM
Joined: Jan 2016
Posts: 465
S
showkey Offline
Shop Shark
I have said this several times prior..........if you current rear end in functional with no issues other than the ratio.

The 3.55 gears are a drop in and all the bearing can be reused. Gaskets, Dial indicator and shim selection is all the parts or special tools that are required.

DEVE instructions are excellent.........my choice was to remove the diff carrier assembly vs gear install in the truck.

Shims are available ...........

Last edited by showkey; Fri Jul 19 2019 12:36 PM.
Re: "Patricks' Tech Tip Article [Re: posey] #1318371 Fri Jul 19 2019 01:03 PM
Joined: Sep 2001
Posts: 28,602
tclederman Offline
Boltergeist
"I have said this several times prior..........if you current rear end in functional with no issues other than the ratio."
A somewhat reasonable point of view.

"I can tolerate the limited speeds but the driveshaft vibration is tough to take until I do it."
Sounds like other issues?


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 48 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 14 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: "Patricks' Tech Tip Article [Re: posey] #1318373 Fri Jul 19 2019 01:07 PM
Joined: Dec 2017
Posts: 537
D
Dragsix Offline
Shop Shark
Just asking here, but with Patrick's out of business, or so I am told, are the 3:55 gears even available any longer?


Mike
Re: "Patricks' Tech Tip Article [Re: posey] #1318376 Fri Jul 19 2019 01:13 PM
Joined: Apr 2005
Posts: 7,714
Justhorsenround Online
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Mother Trucker?


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)


"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line" and lock up those on the wrong side of that line.

Re: "Patricks' Tech Tip Article [Re: posey] #1318379 Fri Jul 19 2019 01:20 PM
Joined: Sep 2001
Posts: 28,602
tclederman Offline
Boltergeist
Yes, MT (he has a post in this thread - look for his name - send a PM) has been selling them for more than several years.
He had quite a few sets made.

https://www.jalopyjournal.com/forum...n-truck-3-55-1-ring-pinion-gears.923013/

Last edited by tclederman; Fri Jul 19 2019 06:10 PM. Reason: added info on contacting MT

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 48 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 14 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: "Patricks' Tech Tip Article [Re: posey] #1318380 Fri Jul 19 2019 01:31 PM
Joined: Jun 2017
Posts: 97
P
posey Offline OP
Shop Shark
Yes other issues....needs new driveshaft bushing as well, that why I want to pull the entire diff carrier assy. Get it all
done at he same time. Has new U joint. Hate to tear apart the yoke area again (its leak free) but it has to be done.

Not sure I will know how to act, when done

Where those shims available?

Re: "Patricks' Tech Tip Article [Re: posey] #1318385 Fri Jul 19 2019 01:47 PM
Joined: May 2005
Posts: 9,134
G
Grigg Offline
.
Don’t know what sizes and thicknesses of shims y’all need but this company has a large variety of shims for differentials.
http://ratechmfg.com/toc.htm


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
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