IMO valve shrouding is a term thrown around way too much so people can sound like they know what they're talkin about. In 99% of the cases, any "valve shrouding" you think might be goin on doesn't amount to a hill of beans.
You’re not wrong. Blowing that chamber wall out away front the valve almost always looks good on a flow bench, but you have to do the best you can to control the air everywhere from the air cleaner to the end of the exhaust.
How many times has it been said it’s all about shape, and it is, but too many guys live and die by their flow numbers. That’s why you see so many HUGE exhaust ports that are just power killers.
