I found this 235 for sale. The guy says it came out of a '57 truck and runs great. What's the deal with this intake? It looks like there are a few extra hoses attached to it as well. Any ideas on what this thing has going on?
That's Step Van or C O E updraft manifolding. Don't know if the LCF used them. Those exhaust manifolds make a unique split manifold.
302GMC is right. In addition to having an updraft carburetor, the trucks often had a speed governor incorporated into the induction set up.