Needing some help here

[desertdeer]

Hey fellas. New guy here and I have a question that I haven't been able to answer by looking through threads. I have a 1985 chev 1/2 ton 4x4 with a 350 that has developed a knock. I am on a real tight budget so a crate motor is out of the question. A friend of mine has a 350 out of a 1991 chev 1/2 ton that he has told me I can have but it has a bad valve. So the plan is to use the 1991 block with the 1985 heads and intake. It has a block off plate for the mechanical fuel pump and I have a summit racing SUM-1102 camshaft that I could put in it.

So tell me guys, is this plan solid? The motor will go in the 85 with a 4 speed manual. Any problems with my flywheel on that motor?

Thanks in advance, I have learned a lot browsing this forum