I have a 2000 blazer that the engine is shot in and also have a 97 olds bravada that has a blown head gasket. I am just wondering if I can take the olds motor and put the heads and intake/fuel injection off of the blazer with the olds bottom end. Any help would be greatly appreciated...

 

It should be zero problems. Just be sure to use the pushrods/rockers from the Blazer and the lifters from the Olds. The 2000 should have roller rocker heads if I remember correctly. Both should have roller lifters, so use the ones that match the cam. In any case no problems with what you propose to do, assuming it is going back in the 2000 Blazer.