Sounds real similar to my 848 head rebuild plans, except mine is going back on a 235 block. (if the machine shop says they're servicable).
Been researching the same info and from what I've gathered from here, a few other webs sites and the vendor I plan on using for the parts the stock springs would work fine. Consensus was that stronger springs were only needed for the most radical cams/builds that see in excess of 5k rpm and may even cause premature wear on the cam lobes.
I never did come up w/the full specs on the Corvette 235 Blue Flame and would be highly interested in seeing them.
Dave
