[Steve C.]

"Every cam I design is designed the same way, unsymmetrical, with a delayed, fast-opening, and a delayed, gentler closing side.
When I open the exhaust valve fast, it produces an intense sonic pulse, which gives it the 'crackling' sound.
By delaying the exhaust opening, I also squeeze out some extra torque from the cylinder.
I have done it this way since 1977, and have always told anyone who wanted to know, how it worked."

Harold Brookshire
AKA UDHarold

Since he has been introduced here if anyone is interested some of harold brookshire cam thoughts are compiled in these links.
Note some might be taken out of context from the original topic and probably some duplication.

https://www.tapatalk.com/groups/clev...ed-t17161.html


Scroll down to UDHarold , open all his posts and read away. It's information overload but real knowledge seekers will like it.
Nicest guy with the biggest burning desire for cams & performance you'll ever meet.
Lunati's whole Voodoo line is straight from his mind. (side note: not all of the Voodoo designs are Harold's)

http://www.chevelles.com/forums/showthread.php?t=208379


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