340 Static Compression Numbers and Test Procedure

Degreeing an Asymetrical Cam
more than you want to know but need to
degreeing an assymetrical cam - Don Terrill’s Speed-Talk


If you go to the first post Brookshire makes (UDHarold) he explains it exactly and my dad taught me in 1980 and how I've done it ever since.

If I'm concerned the lobe my be asymmetrical I use .200 or .300 on both sides of the lobe.

I never ever turn the crank backwards. And I never zero the indicator anywhere but on the base circle.

Just like Brookshire pointed out, you can have the same at .050 opening number and several max lift numbers.

Funny thing is, my dad taught me the very same way he was taught. By Racer Brown himself. I remember the engine on the stand and my dad on the phone with him the first time he did it.

So I'll need to finish reading the whole article he wrote on datsport.com and see exactly how it reads.

I don't care where the .050 is, because there is so little flow there it doesn't matter.

I've also found most stuff runs better much closer to straight up than advanced, if the cam is correct for the application.