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Gear ratio change
#1313003 Mon Jun 03 2019 02:54 PM
Joined: Jan 2016
Posts: 674
D
Shop Shark
I know Patrick's use to be the go to guy for a conversion kit to upgrade the gears in my stock rear end to get better highway speeds but with the issues Patrick had in the last year or 2 and the final demise of his business does anyone have a recommendation for a another vendor for these conversion kits?

I have a stock 54 3100.


Dave from Northern Kentucky
My 54 3100
Re: Gear ratio change
dgrinnan #1313004 Mon Jun 03 2019 03:15 PM
Joined: May 2015
Posts: 2,816
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Contact Mothertrucker here on stovebolt.com via PM. He can fix you up.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Gear ratio change
dgrinnan #1313009 Mon Jun 03 2019 03:55 PM
Joined: Jan 2016
Posts: 674
D
Shop Shark
thanks


Dave from Northern Kentucky
My 54 3100
Re: Gear ratio change
dgrinnan #1313109 Tue Jun 04 2019 03:54 AM
Joined: Nov 2012
Posts: 316
M
Shop Shark
Originally Posted by dgrinnan
I know Patrick's use to be the go to guy for a conversion kit to upgrade the gears in my stock rear end to get better highway speeds but with the issues Patrick had in the last year or 2 and the final demise of his business does anyone have a recommendation for a another vendor for these conversion kits?

I have a stock 54 3100.



The 3.55 gears will only bolt in to the 1940-1953 trucks.

In order for them to work in a 1954 rear end you will need to locate a 47-53 ring gear carrier assembly & install it along with the new gears.

Re: Gear ratio change
dgrinnan #1313139 Tue Jun 04 2019 01:53 PM
Joined: Jan 2016
Posts: 674
D
Shop Shark
Okay, that changes things significantly. Not plug and play. How would you rate this task.


Something a weekend mechanic can take on in his driveway?


Any special tools required?

Last edited by dgrinnan; Tue Jun 04 2019 01:54 PM.

Dave from Northern Kentucky
My 54 3100
Re: Gear ratio change
dgrinnan #1313151 Tue Jun 04 2019 03:32 PM
Joined: Sep 2001
Posts: 30,487
ace skiver
Have you seen/found/read the two Stovebolt.com Tech Tips?

Also: do not be scared-off the need for the 47-53 carrier replacement in a 1954/55st job.
Finding the 4.11 carrier is far more difficult than replacing the carrier (post a Part Wanted ad here).

The change is not exactly "plug and play".
And, you will need to buy/borrow some tools (as shown in the Tech Tips).

We cleaned all parts/housings and did the first conversion in two 4hr sessions.
The second time we did it in about 4 hours (including cleaning all parts - which took a couple hours).

I had help from a friend who is a mechanic, but he had never been inside a Stovebolt enclosed driveline.


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: Gear ratio change
tclederman #1313311 Wed Jun 05 2019 08:02 PM
Joined: Jun 2017
Posts: 129
P
Shop Shark
I have found it extremely difficult to locate that gear carrier assy cause I am in the same situation

Re: Gear ratio change
posey #1313437 Thu Jun 06 2019 06:58 PM
Joined: Jul 2014
Posts: 187
E
Shop Shark
Originally Posted by posey
I have found it extremely difficult to locate that gear carrier assy cause I am in the same situation


Maybe keep an eye on T-5 swap or 5-lug swap discussions where guys are no longer using the enclosed driveline parts..?

Re: Gear ratio change
dgrinnan #1313699 Sun Jun 09 2019 02:08 AM
Joined: Jan 2002
Posts: 2,097
C
Shop Shark
Going from 4.11's to 3.55 was one of the best mods I did to the green turd.


Craig's '50 Chevy 3100 5 window
My truck
If I'm not working on my truck or VW camper, I'm fishing with the wife or smoking Salmon.
Re: Gear ratio change
posey #1313710 Sun Jun 09 2019 04:11 AM
Joined: Jan 2013
Posts: 1,662
S
Shop Shark
Originally Posted by posey
I have found it extremely difficult to locate that gear carrier assy cause I am in the same situation



I have one laying around, I could part with.


1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
https://www.youtube.com/watch?v=Bli...n05i04t1aokgm4p04jiwgffwhyyih5xbk0h00410
1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration

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