Thanks guys, I was wrong on the date its a 65 block(3844422). I bought it and a set of 348 heads (3758379),a couple of gasket sets(some are GM), 7416 stroked crank that looks like its had all the machine work done. A set of stock pistons , rods ,brackets & other misc.parts. I've wanted a 409 for a while found more than one in one place, price was right so I bought it with some other things. So my thought is to use what I have make a 481 stroker. Just not sure on the crank as of now. I will take the block, crank, & heads to machine shop have them checked out. Some of the questions I will have is will it be possible to use the heads? Just gathering info. I don't have anything to put it in yet.