Information on a 340 for my 69 dart

All I can tell you is good luck. Good 340 blocks are hard to find for a good price anymore. All of the parts are over 50 plus years old and most have had a hard life. I'm putting a 340 together now and it blows my mind what parts cost now and IF you can find them. Then machine cost has gone up as well. I'm afraid to add up where I'm at on this one but I can't stop now. I can tell you it's way more than I was ready to spend. If you don't have deep pockets and you just want a good running V8 do a magnum and leave the 340 stuff for the restro guys. Or you could always hop up the /6 you have. They are fun tough engines that you can get good power out of. The torque they make is awesome. Good luck on your build.