Unknown parts & advice
This is my first time attempting to build a sbc, I bought a rotating assembly that came with a set of heads from an old boss. It is a 4 bolt main bored .030 over making it a 355 according to him, I’m unable to figure out exactly what these Manley piston specs are. They appear to be aluminum, and have a 5 digit number stamped. On the underside they have “MANLEY” casted into them on one side and then a “1” inside of a triangle? Internet search doesn’t come up with anything that seems definite. I’m assuming they are an old line of pistons that may have been discontinued. My next question is the heads that came with it have little to no numbers casted in them, but someone has put money into them(am willing to take more pictures for anyone requesting). They look like bigger valves, moroso pushrod guide plates, and some kind of triple valve springs. I’m trying to build this engine on a budget and if these heads are worth using it could save me a lot. The only issue is they have been sitting around for a while and are starting to develop surface rust on the mating surface, do these for sure need to be resurfaced before putting the engine together or is there some kind of poor man’s resurface that can get me by? Sorry for the life story just trying to give as much info as a I can to see if anyone out there has been building these for longer than I’ve been alive and is able to just recognize these parts. Thanks