I hate to do it, but how about an updated post on the 400 sbc?! 400 small block bored 30 over (406) Vortec heads (64 cc) at the machine shop now 30 over flat top pistons steel crank at the shop now too being turned and polished I'm trying to use what I have if possible. Yes, my question is related to rod length... 1. Use the stock rods and be fine, or too high of compression? 2. Or - Use 5.7 rods. Would this be ok or need a small base circle cam? Please keep it simple, THANK YOU in advance for your help!