Hey guys, I'm new here so don't cuss me if this isn't in the right place. I'm about to begin building my first engine. I'm learning as I go and read more. Probably going with the scat 9000 balanced assembly . Does that mean I can put it right in, or do I still need to get it balanced? All info I find sorta goes both ways. Question number2 . The 350 top end kit will be fine for my 383 but, I could probably run a little more cam, is this correct? Why does edelbrock sell a Top end kit for a 1987 and later engine but not a 1986 and before? And why even sell it at all?

 

Sorry I ment a 87 and after 383 top end. And no pre 86 383 kit? Why not The regular 350 top end kit?