The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 47-55.1 Changing Rear End Gears 1950

mr48chev · 09-27-2020, 12:05 PM

I'm thinking that there is no difference between the early torque rears up to 53 and the 54.

Classic parts lists the 3.55 gears https://www.classicparts.com/1940-54...ctinfo/93-511/

Then you need the bearing set https://www.classicparts.com/1951-54...tinfo/93-512B/

With those two pieces you are looking at 884.90 with no labor charge yet plus any other additional costs. If you have a competent shop do the work you are going to have around 1200 tied up in that gear swap.

I'm rather thinking that all the vendors that sell the 3.55 gear set get their ring and pinion sets from the same manufacture. Patrick's are out of business as far as I know due to their poor business practices over the past few years.

Chevs of the 40's says the gears will fit the 54 housing if you run a 53 or earlier carrier. https://www.chevsofthe40s.com/detail...et_12_Ton.html They actually want a serious amount less than Classic parts does for the gear set. https://www.chevsofthe40s.com/detail...et_12_Ton.html
My guess is that you would have to change the carrier with other vendors offerings.

09-27-2020, 12:05 PM	#15
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,301	Re: Changing Rear End Gears 1950 I'm thinking that there is no difference between the early torque rears up to 53 and the 54. Classic parts lists the 3.55 gears https://www.classicparts.com/1940-54...ctinfo/93-511/ Then you need the bearing set https://www.classicparts.com/1951-54...tinfo/93-512B/ With those two pieces you are looking at 884.90 with no labor charge yet plus any other additional costs. If you have a competent shop do the work you are going to have around 1200 tied up in that gear swap. I'm rather thinking that all the vendors that sell the 3.55 gear set get their ring and pinion sets from the same manufacture. Patrick's are out of business as far as I know due to their poor business practices over the past few years. Chevs of the 40's says the gears will fit the 54 housing if you run a 53 or earlier carrier. https://www.chevsofthe40s.com/detail...et_12_Ton.html They actually want a serious amount less than Classic parts does for the gear set. https://www.chevsofthe40s.com/detail...et_12_Ton.html My guess is that you would have to change the carrier with other vendors offerings. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.