I bet that overlap is crazy! Since you are going this mental, any reasons for not picking the 307 / 298°??s too mental 
??
Yes - any more would, apparently, need titanium in the valve train. I may well be on the edge of acceptable valve train weight for these cams, as it is. The next step would be to go for 5mm valves from the S62 engine along with the Ti parts.
You can't post engine porn like that V8 a few posts back and not say what it is. The distributor at the rear of the head looks Italian but Ferraris of that era had one on each head. And timing belts. Spill!
That's a very rare Alfa Romeo engine from the 1960s, the whole thing was a total mess with a corroded front end, the replacement was machined out of a solid piece of aluminium.
My guess was a Cossie DFV, but I have never touched one so Im not sure 
You might have covered it already, but what coils are you planning on using?
There was a DFV on the dyno when I was there this week, built by
http://www.geoffrichardsonengines.com/ they're some sort of insane, DFVs eat their blocks in about
8 hours of total running time. A new DFV block costs 20K. 2.5K per
hour running time for the block alone, chuck in some rebuild costs and you're probably looking at five thousand pounds an hour.
I'll be using a Bosch Motorsport coil pack, wasted spark, as I have a pack that was going to go on my Honda B16B engine.
