That is good insight Scott and I think you are spot on. I was pretty sure I had the cam timing correct for the build but I did not know if the street roller lobes would be a good match for these heads. I took a gamble on that since I figured the 1.76 rocker arms would speed them up enough to work. I'm sure there is power left on the table with this build but it is going into a street car so I don't think anyone involved really cares. The street roller lobes should be a good fit for intended use of the engine.
On my Mopar dyno mules I spend a fair amount of time trying different lobe profiles and different rocker arm ratios to see what works. Sometimes I find something that works and sometimes I don't. Billy Godbold just sent me a cam with some new lobes for my 470 engine so we'll get that on the dyno in a week or two to see if it picks up some power. The more aggressive lobes sometimes pick up power and sometimes they don't. I'm not smart enough to know when they'll work and when they won't. I did an infamous article for Car Craft last year where I spent a ton of time (and money) testing all sorts of different rocker arm ratios and had zero power difference between them. That was a case where the engine did not want more aggressive valve action or more lift. It just didn't care.
The thing is, at every degree of lift there is a demand that we're trying to meet. Peak demand is usually somewhere around 76* ATDC. If you meet the demand, there's no need for more lift. At that point the valve simply has to continue on it's path...you can't just stop it suddenly, hold it there, and then close it when you need to but more lift from that point, thinking you're going to get more air into the engine, is a myth. You
can open a valve too fast.
