So I have a 340 block and crank I'm going to build one of these days. I've been saying that for five years now… right now I am running the stock 318 and it's pretty worn. It was my daily driver for a few years up until a year ago so I use the hell out of it.anyway it has a pretty severe intake manifold leak at the heads and I'm thinking about replacing it with something I'll also be able to use on the 340 build.
What are my options for something that will work well on the 318 but will also be appropriate for the 340. I don't want to sacrifice anything on the 340 build for the 318 but I will need it to run in the meantime. To put it another way, I want to pull 350 to 400 hp out of the 340 so I want the ideal manifold for that and I wanted to work with the 318.
