The whole idea of a hemispherical chapped dome is to fit bigger
valves. Maybe they thought that was adequate for a street engine. And
keep their customers from sucking valves. I ran 330 degrees with an ISky
Roller: http://www.billhughes.com/IskyRR1000.jpg In my Seven:
http://billhughes.com/thunderb.htm What do you run?
God Bless America, Bill O|||||||O


c wrote:
>
> Need to correct myself here. I misread the cam specs. The duration was 276
> in 1966-1967 and 284 after that.