Can you identify this transmission

[Vicm]

From these pics..
many thanks.

 

[Vicm]

One more pic

 

[high country cruiser]

Need more info..

Sm420...

 

[inkpot]

Howdy! Yup, SM 420, with PTO drive, and a real nice parking brake!! John

 

[Poser]

To hell with the transmission....lets see the rest of the truck.

 

[Vicm]

Sm420...

Thanks, hugh country cruiser , it is on a 58 1 1/2 Ton truck.
I was thinking sm420 even before the pics, but since I have this site I just wanted to make sure before passing the info along.
More on this truck below

Howdy! Yup, SM 420, with PTO drive, and a real nice parking brake!! John

Thanks inkpot, it is a nice setup ..

To hell with the transmission....lets see the rest of the truck.

Poser, unfortunately This 58 1 1/2 ton is being made to a pulling tractor, I am just try to figure an easy way to get lower gearing just to help the man who is building it.
He is saying his rear diff ratio is 8:1 which I can't picture and I think he has a 4.11 :1 ratio.
This is why I posted the quection.
But here are some pics as it looks so far in his build.

 

[Vicm]

And few more pics

 

[dgangle]

That is redneck right there.