Biggest Chevy 6 in that time is 261.
Export trucks may have exceptions.
In the 50's Chevy didn't have a big enough truck for the big GMC gas engines any how.

Grigg

P.S. speaking of big 6's, at the moment your post count is 478, know what engine that is?

Last edited by Grigg; 12/03/2009 4:19 AM.
•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-