Thanks for the compliments guys. Mark,as far as cams go I would give your specs to a couple of different cam companies and see what they come up with. The cam that Bullet spec'd for me(and which was along the lines of what I was expecting) was much bigger than the cam I ended up with from Comp,both were solid flat tappet,both were reverse split cams. Comp were concerned that I would have trouble footbrake spooling the turbos with the duration of the Bullet cam. I think the big guns going to cams similar to n/a cams is because technology has improved to the point that big turbine housings (with the corresponding low backpressure that n/a cams like) can now be spooled easily.
Bruce, the inside of the box is 'square' to help break up any swirling ,but I've also incorporated a pair of K&N stubstacks to help direct the airflow into the carbs and to stop the airflow swirling around the air bleeds(even though the airbleeds will be blocked!). I am hoping it works as it is ,but can allways modify it, along the lines of what you said, using screens, if the plugs show any signs of poor distribution. Tom V suggested marine flashback screens which I take is a similar thing. I built an airbox many years ago with a large heater core inside the top of it,as a water/air intercooler, it seemed to work ok but one large spit back through the carb blew it up like a balloon!
I then switched to a draw through setup,I actually felt this drove better than the blow through setup,but at the time I wasn't as clued up on carb mods needed for blow through and there wasn't the info out there that there now is.
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