ok guys picked up a new motor (long block only) for my boat and going to sell the current one in it. im pretty sure its a 4 bolt main (thats what mortec said) have not opened it up though. 454 stock bore. Looks like it has about 75 hrs or so.. I had those pictures up in a different thread a while ago. they are cast pistons and not sure what the rods and crank are as I have not seen the bottom end. heads are a 427 closed chamber 101cc. cam in it is a fairly mild 576 lift solid. push rods are the smaller ones and valve train is stock. it runs really well and will turn 5400 in my boat. has brand new felpro marine racing head gaskets also, arp head bolts. never failed me. here are a couple of pictures. let me know if you have questions. shoot me a fair offer.
(water was from when I took head gaskets off)