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PS: there is something to be said for at least having 8 egts, and an 02 in each collector, if not having 8 02.
There would be gains to be found in staggered jetting. Steve at Westech had shown this a few times over the years.
There's a lot of stagger in this fuel curve for the 565. A lot. It did not like square jetting one bit. I'll see if I can locate the out of the box square jetting chart.
 
On that point, he mentioned a target BSFC of .42 (typical he said) The BSFC will just be what it is once the engine is tuned. You don't tune to a specific BSFC.
This is a snipped dyno sheet from the SBF Cam Challenge. It has 2 place mark where it lists the BSFC as the same and the Air Fuel Ratio is very different.

Stan

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