One last blab on this subject, and then I'll "take off". In building a larger engine, especially with higher-than-stock compression ratio, a person really needs to consider installing bigger cams (longer duration).
The reason for this is that the smaller stock cams will be choking that larger engine. You don't need bigger cams so that you can rev your engine like a Suzuki Pro Stock drag bike; you need them to help that large engine breath.
I see by Brent's website that he now stocks those nice Thunderbike cams. While they seem a little "pricey" to me, if you've dropped the bucks on the big bore/stroker kit, you need to spend some more to do the job right.
Not putting in bigger cams will probably result in your getting serious
ping in your engine, even on good gasoline. (An inexpensive work-around would be for you to install a water injection unit.)
Wow, three posts and I've not said anything about porting and big intake valves. Having done a fair amount of flow bench work in my younger days, I know the value of big valves, especially the intakes. In fact, bigger intake valves are more important than port work, especially for street vehicles. Yeah, I know - where does it end? (It ends when your billfold goes flat....)
