I'm looking for some tech info on rebuilding a 400 block from 1971 to go in my 69 convertible. I also have a set of 428 heads I can use if that would help matters. I'm looking for good daily driveability along with a little performance.
First, should I use the 428 heads or the 400 heads? I'll have date codes this weekend if it matters.
Second, is there a source on this or other websites that can give me some guidelines regarding head upgrades, good aftermarket performance upgrades, etc.
This is my first engine rebuild, but I have an experienced builder that is helping me. I'll have the block bored if necessary, or just honed if the wear is not severe.
Other than that, I have a blank canvas. If this were your project, how would you put this engine together?
