The big-block V6 was made from 1960 to 1974 for GMC's 6500-series commercial pickup trucks, and it is still one of the biggest V6 engines ever produced. The big block wasn't a tower of power, but ...

A 1960 magazine advertisement for the GMC V6 and V12 gasoline and diesel truck engines, touting their cost savings. Search. ... 1960 GMC V6 Is the Greatest Engine Breakthrough Since 1940.

GMC's huge Twin Six V12 gas engine was made to take on its diesel counterparts, ... GM introduced a new family of heavy-duty 60-degree V6 engines with 305 to 478 cubic inches of displacement ...

GMC means business, and what better way to blow your doors off than with a full-blown Syclone? ... ENGINE: TypeOHV 90-degree V6. Bore & Stroke4.00x3.48 inches. Displacement262 cid, 4.3L.

The big-block V6 was made from 1960 to 1974 for GMC's 6500-series commercial pickup trucks, and it is still one of the biggest V6 engines ever produced. The big block wasn't a tower of power, but ...