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Re: What is the verdict on the 3.55 conversion? [Re: tom moore] #1311259
Mon May 20 2019 03:03 PM
Mon May 20 2019 03:03 PM
tclederman  Online
Boltergeist
Joined: Sep 2001
Posts: 27,951
Jarvisburg, NC
You will appreciate and enjoy that 261, Steve

Did you get a full parts kit for the 3.55 conversion?

I found my amplifier-box Suburban to be as quiet as a new vehicle after doing the 3.55 conversion with all new bearings/bushings in the rear end and rear axles. I guess the sound difference might/will be much less in a standard cab?


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 50 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: What is the verdict on the 3.55 conversion? [Re: tom moore] #1311261
Mon May 20 2019 03:08 PM
Mon May 20 2019 03:08 PM
S
sstock  Offline
Shop Shark
Joined: Jan 2013
Posts: 1,242
Gig Harbor, WA
On the 3.55 conversion, I bought the mother-trucker gear set direct, then found the 4 bearings NOS on fleabay, then sourced the pinion shims from a member here. Bought the pinion bearing spacer tool/and Okie drive shaft bushing/seal from the Filling Station Worked out quite a bit cheaper, that way.

Kids these days deal with road noise by eliminating it by making more noise inside via subwoofers,lol

Last edited by sstock; Mon May 20 2019 03:11 PM.
Re: What is the verdict on the 3.55 conversion? [Re: tclederman] #1311338
Tue May 21 2019 01:17 AM
Tue May 21 2019 01:17 AM
5
52Carl  Offline
Master Gabster
Joined: Mar 2010
Posts: 7,983
Virginia
Originally Posted by tclederman


I wish I knew then how to deal with 3-speed shifter-linkage parts and adjustments.

Tim, you didn't miss anything. As much trouble as I had getting mine to work reliably, I believe that it probably took a few years off the end of my life.
Carl

Re: What is the verdict on the 3.55 conversion? [Re: tclederman] #1311363
Tue May 21 2019 04:32 AM
Tue May 21 2019 04:32 AM
M
Mother.Trucker  Offline
Shop Shark
Joined: Nov 2012
Posts: 231
Skull Valley AZ.
Originally Posted by tclederman
significant changes that I have made on my 1954 Suburban, in order of value & performance & enjoyable drive-ability are:

2000: 3.55 R&P conversion (and ALL new bearings/bushing/seals - venders sell kits - double your costs and spend the money)



I can't believe the crazy price that the big vendors are demanding for the bearing & seal installation kit.

Just like Steve did.....You can locate all of the associated parts needed for the 3.55 conversion on your own for a fraction of the price.

Deve has documented the individual part #'s for the installation kit in his article on the 3.55 gear conversion.....

More info. Here




Re: What is the verdict on the 3.55 conversion? [Re: tom moore] #1311396
Tue May 21 2019 02:55 PM
Tue May 21 2019 02:55 PM
S
showkey  Offline
Shop Shark
Joined: Jan 2016
Posts: 437
Wausau WI
^^^^^^^^^^Plus if the current rear end is in good working order............the bearing can be reused.
Following the DEVE instructions......
Bolt on the new ring gear to the carrier. No need to place the side bearing if they are good.
Slip off the pinion bearings off the old pinion , reuse the bearing. Often a press is not needed.
Set the pinion depth with new shims.
Set the gear backlash with the side bearing adjustment.

Done

Last edited by showkey; Tue May 21 2019 02:58 PM.
Re: What is the verdict on the 3.55 conversion? [Re: tom moore] #1311398
Tue May 21 2019 03:08 PM
Tue May 21 2019 03:08 PM
S
sstock  Offline
Shop Shark
Joined: Jan 2013
Posts: 1,242
Gig Harbor, WA
You talk about reusing bearings, no disrespect, but when I started disassembling my rear, I found that one of my pinion bearings had lost its cage and was missing one ball bearing on each side of the bearing. I found cage remenants but no sign of the ball bearings, now, everything should of been found between the carrier in the torque tube side because it is trapped, but found nothing, leaves me to believe this bearing was manufactured minus 2 balls and has been running on them since new. My rear end had 36K on it and I thought it was in top order too. I would not stake an expensive rear end rebuild on a used 65 year old pinion bearing, discounting the amount of work, those bearings can be had for 30-60 bucks if purchased right. I just cant wrap my head around cutting that corner.

Last edited by sstock; Tue May 21 2019 03:12 PM.
Re: What is the verdict on the 3.55 conversion? [Re: tom moore] #1311405
Tue May 21 2019 04:17 PM
Tue May 21 2019 04:17 PM
tclederman  Online
Boltergeist
Joined: Sep 2001
Posts: 27,951
Jarvisburg, NC
Here is a parts list - I simply bought the kit from Classic Parts.. Good luck saving time and money on buying those parts otherwise (if you do, please let us know).

Also, if you buy your own parts - buy rear axle bearings and seals. This is a simple procedure, and the cost is not much. You might need to also buy “speeding- sleeves” if there are grooves on your axle. You can now talk at normal voice level as a rear seat passenger in my Suburban. I attribute this to new rear axle bearings.


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 50 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: What is the verdict on the 3.55 conversion? [Re: tclederman] #1311407
Tue May 21 2019 04:24 PM
Tue May 21 2019 04:24 PM
M
Mother.Trucker  Offline
Shop Shark
Joined: Nov 2012
Posts: 231
Skull Valley AZ.
Originally Posted by tclederman
Here is a parts list - I simply bought the kit from Classic Parts.. Good luck saving time and money on buying those parts otherwise (if you do, please let us know).


According to Deve... he did the entire job for $600. { the gears cost him $350...so he was able to source the install kit for around $250 }.
Most of the big vendors are selling the " installation kit " alone for $500.

Quote from Deve's article :
"Besides the actual Gear Set, there will be select Bearings, Seals, Gaskets, etc. that you may need. If you have a local BRC Bearing, or Murdoch Supply, or any company that specializes in Bearings and Seals, you can get them cheaper by eliminating the middle man. All you need is the part number which is supplied here. My estimate on total cost is about $600 for most installations TOTAL including the Gear Set. If there is nothing wrong with your Bearings and Seals, maybe much less."



There is no need to pay for a high $$$ "installation kit" and there is no need to replace parts that are completely serviceable & can be reused.

Instead of paying out the wazu for the complete installation kit.... you are better off waiting until you get everything disassembled & only replace the individual parts that need to be replaced.

.

Re: What is the verdict on the 3.55 conversion? [Re: sstock] #1311450
Tue May 21 2019 10:59 PM
Tue May 21 2019 10:59 PM
S
showkey  Offline
Shop Shark
Joined: Jan 2016
Posts: 437
Wausau WI
Originally Posted by sstock
You talk about reusing bearings, no disrespect, but when I started disassembling my rear, I found that one of my pinion bearings had lost its cage and was missing one ball bearing on each side of the bearing. I found cage remenants but no sign of the ball bearings, now, everything should of been found between the carrier in the torque tube side because it is trapped, but found nothing, leaves me to believe this bearing was manufactured minus 2 balls and has been running on them since new. My rear end had 36K on it and I thought it was in top order too. I would not stake an expensive rear end rebuild on a used 65 year old pinion bearing, discounting the amount of work, those bearings can be had for 30-60 bucks if purchased right. I just cant wrap my head around cutting that corner.



As mother stated above........it’s best to disassemble and carefully inspect all the parts. Then order whatever is needed. If one or more bearing are damaged .......they all will likely be damaged by the debris.

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