906 casting Vortec heads and overheated (?) rods
I found a set of #906 heads for my budget 383 project. They were on a 350 boat engine that I got for 200 bucks. The bottom end was compeltely trashed. When I pulled it apart I did not find one good bearing in the bottom. Some of the rods big ends have a dark stripe around the inside where they got hot. Does that mean they're ruined?
The top looked ok. I got the two heads along with a Volvo Penta aluminum manifold and what looks like a Rochester or Carter 4-bbl carb, it says GM on it. I'm hoping I can use that stuff but we'll see ...
But my other question for the field is the heads. When I took them to the machine shop the guy there told me that Vortec heads are prone to cracking, like he was preparing me for bad news a couple days from now. Well, I haven't heard or read anything about Vortec heads having a bad reputation for cracking. Any of you know about that?