Thread: 348 chevy questions

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hi everyone, this is the first post for me. i am rebuilding a 348 and what is the story on the heads. i have heard that you need to put stainless steel valves in because of the weak water jackets ( how that helps, i don't know ) but i was wondering , do i need hardend seats in the heads or soft seats? do the stainless steel valves eliminate need for hard seats,or do i use stainless valves and hard seats ? from what i understand if you use the original valves with hardened seats it will bust the water jacket and i dont see how stainless valves will fix that.

i was pleasantly surprised at how good the motor is inside, everything looks like new . rings and brgs is all this thing is going to need.

also i plan on putting GM TBI off of a 350 on this thing, i am thinking that it should work good because it is only 2 cubic inches less or does anyone have any bad experiences doing this?