Don't know about the 1946 and likewise I don't have any idea what the junkyard situation in Birmingham is, but I had to have one made for me. All the ones I found were either an inch too short (won't work...yoke doesn't slide in quite enough) or too long. I could have cut a long one down, however all those I found had the wrong u-joint scheme and I never have liked those half/half u-joints made to connect the wrong thing to the right thing. At least the one I had made is completely balanced and uses proper u-joints. Good luck!
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
90% sure your going to have to get one made. You could hunt the salvage yards with a tape measure and calipers for days and not find one that fits. It’s been about 5 years since I had one built but the price was just at the $300 mark.
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
Lots of variables are at play here. My situation is different but some of this might be useful info. I have a 1963 C10 with 115” wheelbase. I found a salvage yard drive shaft that was the correct length and had the correct slip yoke. All I needed to do was swap out the rear universal joint for a conversion u-joint and it bolted right up. Drives great and without vibration. My 1965 C10 also has the 115” wheelbase but I had a driveshaft shop swap modify my original driveshaft. They swapped out my original slip yoke for a correct slip yoke from an S10 truck. That required a conversion u-joint for the slip yoke. The rear u-joint did not need to change. They shortened the driveshaft about 3”. Dennys Driveshafts has a website and a free worksheet that can help you measure the correct length driveshaft for your application.
The pictures below show the salvage yard Blazer driveshaft I used in my 1963. Neither of my trucks have an adapter plate for the T5. The conversion u-joint pictured was correct for my application but might not be correct for yours. The Blazer slip yoke pictured is correct for a T5.
