Originally posted by Bob Parmenter
Not all Chev small blocks are balanced the same. I'm not that much of a chev expert to tell you which ones are internal balanced, and which are external, but I recall there are differences. . [/B]
I am by no means an expert on the subject, but I've been told that 400 sbc's and 454 bbc's are the only two externally balanced Chevy engines.