Originally Posted by Grigg
...A 6BT is longer than a 4-53, and while a great engine probably takes a fair amount more work to install in an AD truck. I've seen pictures of a few 6BT's in AD trucks, but haven't seen a clean and professional looking one yet. So not having tried a 6BT myself that leads me to believe it's not so easy.

Grigg

OK, now I've seen a good/clean one (may need to Join old GMC trucks to see it)
http://oldgmctrucks.infopop.cc/eve/forums/a/tpc/f/294006236/m/616101765/p/1
Still a lot of work though.

Grigg

•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
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-