Inliners International Forums General Discussion Drive Train 1954 Chevy 3600 rear end

Did the 1954 3600 Chevy truck come with an open or enclosed drive shaft. Also did they have 6 or 8 lugs rims?

my '58 chevy parts book says that the 3600 (3/4 ton) pickup did have "open" drive from '46 thru '58 (probably later on too) with a 4.57 ratio. The book would not give me a lug count only the 1/2 ton had the torque tube! the center section casting number would be 3699535

Open drive shaft,two universals,longer wheelbase,3/4T,
15 x 5.50 semi drop rims, 8 lug.

the '58 parts book also offers the following wheel
configurations:

'47-'55 17" X 5.0 w/ 1/2" offset
'47-'55 15" x 5.50 1/8
'53-'55 16" x 5.50 4-1/2"
all for 3/4 ton vehicles

The center differential pulls out from the front of the housing and a unit from a 67..72 GM 3/4-ton will bolt in and alloy you to run a 4.11 ratio.

Ken's right a 67-72 gm auto V8 truck will have 4.10 & the center section will bolt right in. I did this swap in my '50 1 ton & love it! My 261 likes it on the highway too!

I bought the truck last week. I am not sure what gears are in the rear end but the PO said it would pull stumps out of the ground (AKA low gears?)I though he said it has 4.11 gears. So i need something that will be better on the highway. So do I need high gear? 3.55 maybe? The 76-72 GM V8 swap sounds like the same gears I already have in the truck.

Sorry I'm new to this rear end gear thing.

with tall tires, you should be fine running 55 on the highway. I ran up to 65 with mine with the stock 4.11 gears and stock tranny.

The next step is to put in an OD tranny - you will not find a better ratio (numerically lower ratio) for that housing unless you find the very rare 3.90 which is hardly worth the effort if you already have a 4.11.

I have an A833 tranny which gives me a 0.73 OD for 4th gear - would make 70 mph a dream at about 2500 rpm with your setup.