Quote:
Originally Posted by bigblockv6
Looking at the pics of the 351 it has the 1972 valve covers with the "V6" logo stamped in, 1971 and earlier had "GMC" stamped on the covers. It has been upgraded to the Holley 500 and looking at the runners of the intake manifold it's definitely a 351C.
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I agree with Pete -- looks like a 351C to me too. That's what's in my 1965 one ton Suburban. I also agree with Funky -- that it would be a definite upgrade to your 305. Even though it's not a magnum engine, it's a step in the right direction. You could upgrade it to a magnum at a later date if you can find the magnum heads and manifolds. It probably is a low mileage engine, and the price is right.