Low Deck 400 Builds

If I were building a stock stroke 400 and wanted to make decent power without spending too much I would follow moper's advice. Pay close attention to details with the blueprinting, I.e. go to a good reputable machine shop and get the block done right. Definitely zero deck it. I would use the 440 Source Stealth heads without porting them and have them milled .050 on the combustion side and get the intake surface milled 123% of that which I'm pretty sure is .063. The intake surface milling will enable you to use and out of the box intake and seal correctly. The .050 off the combustion side will bring the chambers down just below 75cc so you'll get a nice bump in compression. I would use a hydraulic flat tappet cam, there are lots of very good cams available now. I would expect about 450/450 hp and torque from a combo like this and that's plenty enough to make you smile every time you put your foot in it.