search the big bolt section for "Diesel" and see what pops up.
There have been several post.

I am doing my own conversion on a 48 6400. Obviously I am doing what I think is best for my needs. You need to find out what yours are before you will have answers as to how to build your truck.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-