December 28, 201114 yr Apparently that's two GMC 305 V6 engines bolted togehter. Or it could be 351, 379, 401, 432, 478 or 702 in cubic inches too http://en.wikipedia.org/wiki/GMC_V6_engine
December 28, 201114 yr Like the Wikipedia link points out, that's the V12 version of GMC's V6 engine series.
December 29, 201114 yr Like the Wikipedia link points out, that's the V12 version of GMC's V6 engine series. I guess I should have read the page, huh! D'oH...
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