Originally Posted by firehawk
Dont trust the guy you got the motor from? I wouldn't either, haha.
Fire it up and watch the oil pressure, if its good then run it.
That isn't always a sure fire way to know you have a good engine. I bought a used 454 a long time ago. When i put it in a test stand and ran it it had a horrible knock from the lower end, but yielded 65 psi cold oil pressure. I removed the oil pan and began taking bearing caps off. The #3 main bearing was down to copper and both bearing halves were loose in the main cap. The #7 rod bearing was also down to copper and the crank was scored heavily. So a word of caution when buying used engines good oil pressure does not always indicate a good engine. I later determined the 454 was overheated severely which caused expansion of the #3 main journal.