Need some help building chevy 400
I am in the process of building a chevy 400. I am thinking of doing a 377 stroke. Since I have a 350 crank just sitting around. I am wanting to know if what im thinking is all correct. I want to put the 350 crank in the 400 so I will need to get main bearing spacers? I plan on running keith black pistons and would like a 11 or 12 to 1 compression. Can I also use the chevy 350 5.7" rod versus the 400 5.56" rod? I also think I have to bore it out .30 over? Is this correct? I will be running 202 double hump heads. Thanks alot for all of your help Also any idea on how this set up would be on horsepower. Its going in a 68 firebird with turbo 350 and 4.10 rear end gears.