Are you sure it's not a V-12? The only 2-carb GMC's I can remember were the 502 cubic inch 12-cylinders, IMHO.

OOPS! I just noticed the year! Those big inline 6's were used in the road tractors in the late 40's and early 50's. My uncle owned one that he used towing the big boats he repaired, with a lowboy trailer. Nothing much will interchange between them and the 216/235 engines.
Jerry

Last edited by Hotrod Lincoln; 03/13/2008 11:01 PM.
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