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3:55 conversion where to purchase
#1372832 Mon Aug 10 2020 07:57 PM
Joined: Jan 2008
Posts: 291
B
bigedpa Offline OP
Shop Shark
If you have done the 3:55 rear differential conversion, where did you buy yours from? Excluding Patrick's as they are not around anymore, recommend a vendor? Did you also purchase the installation/assembly kit i have seen some of the vendors offer? Other than the gearing and associated seals, bearings, ect. was there anything else you should have/would have/wound up having to purchase to make things easier or more complete of a process. I will be installing it in a 46 1/2 ton pu.

Thanks for your time and input

Ed


"it's only old if you can't find a use for it; otherwise it's cool and i'll use it."
Re: 3:55 conversion where to purchase
bigedpa #1372834 Mon Aug 10 2020 08:11 PM
Joined: Sep 2001
Posts: 30,431
ace skiver
Have searched this forum?

Mother.Trucker (a member here) sells the 3.55 R&P gears.

There have been many posts about doing the installation and buying an installation kit.
vendors that sell 3.55 installation kits

Chris Sweet's Tech Tip on the 3.55 R&P installation.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- 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 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: 3:55 conversion where to purchase
bigedpa #1372836 Mon Aug 10 2020 08:16 PM
Joined: Aug 2018
Posts: 258
D
Shop Shark
Ed, Looks like The Filling Station and Jim Carter's Truck are both in a back-order status. Chevs of the 40's has the 3.55:1 Ring Pinion Set [chevsofthe40s.com], a bit less than the other two vendor's regular prices. I've not used this ring/pinion set from Chevs, but other parts I've sourced through Chev's have been fine, FWIW.

Doug

Re: 3:55 conversion where to purchase
bigedpa #1372879 Tue Aug 11 2020 12:29 AM
Joined: Sep 2001
Posts: 30,431
ace skiver
If you are looking for the Ring & Pinion set, check with Mother.Trucker in a Private Message.

I think that I have only used the Classic Parts installation parts sets, but Chevs of the 40s should have a similar set? [chevsofthe40s.com]

What year is your 1/2 ton truck?

There is a 1930-1940 installation parts set and a 51-54 installation parts set.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- 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 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: 3:55 conversion where to purchase
bigedpa #1372991 Tue Aug 11 2020 07:30 PM
Joined: Aug 2004
Posts: 1,395
ODSS Lawman
Besides the parts you listed, you will need also:

BFH
Dial indicator with stand
torque wrench
pipe

You will need two types of pipe. Listed in my Tech Tip above is a pipe to drive the bearing onto the pinion shaft (1-1.5"?) and a longer one to drive out the okie bushing as shown in the tip.

The most important part of this project is attention to detail. Read the install instructions, and the TechTip ask questions.


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 [stovebolt.com]
Re: 3:55 conversion where to purchase
tclederman #1373287 Fri Aug 14 2020 11:38 AM
Joined: Jan 2008
Posts: 291
B
bigedpa Offline OP
Shop Shark
TC it’s a 46 1/2 ton. Will be running a 261 and probably a year correct 4 speed trans.

Appreciate everyone’s time and input. Getting ready to read all the tech tips prior to purchase.


"it's only old if you can't find a use for it; otherwise it's cool and i'll use it."
Re: 3:55 conversion where to purchase
bigedpa #1373288 Fri Aug 14 2020 12:26 PM
Joined: Sep 2001
Posts: 30,431
ace skiver
Maybe SWEET or MT or another member will confirm that MT's (or other vendors') 3.55 gear set will work with your year?

I think an installation set for your year is listed in a post above?


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- 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 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]

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