You guys have been great with my questions last year. Now, I have a major prob. Took my 70 blazer out for the first nice day this year and the original 307 with only 64,000 miles on it and my truck went

. Now I need an engine

. I have been calling junkyards for a 350 but dont know if any old 350 will fit. It seem like 1969-1985 are the same but most dont have 350s that old. Will a newer one fit? I dont know if I want to throw down for a new GM Goodrench right now if I dont have too. Any help or advice woud be much appreciated and I promise I will post some pics when shes healthy again.