ok here's the problem.

460 in my 78 Bronco all of a sudden just started smoking today and it coming from the drivers side bank. Trying to figure out what it is. I still have really good oil preasure at idle. Could it still be the rings? Also I have another block in my garage and it has the casting of DOVE-A where the starter would be, so i know it's a 70 block and I have a pair of 69 heads for it. So here's the question any other id numbers on the block to try and determine more about it? Also is there a link that has all this info on it? tia

 

Your link is this site.

There are actual DAY casting marks on those parts
ie : Look for * 9L24 *

 

cool cause I'm thinking 521cid would be really nice right about now. Want to make sure block can handle it, of course it would never see the upper side of 6000rpm's but you never know.