wheel base?

[bonvo]

does anyone know what the wheel base for a 56 long bed is? my truck is a 3600 3/4 ton if anyone knows let me know please

 

[Kens 50 PU]

123.25 inches. Here's a link that shows some exterior dimensions for that truck. http://chevy.oldcarmanualproject.com/chevyresto/56079.htm