Quote Originally Posted by Pranav View Post
My advice is to find a clean used replacement block for what you have now and just drop it in and send it! Getting harder to find clean 305/350s these days but maybe an old vortec pull out can fit the bill.
shoot, 350's are still out there in abundance. Last trip to the pick and pull I walked by 7 of them, and i was just glancing and not shopping. Last long block I got someone just gave me... for free, and it is in good shape.

Vortec shortblock will work just fine, as long as you're running an electric fuel pump. vortecs and most TBI blocks don't have the mechanical fuel pump boss fully machined.