Okay lets say you are playing with cam degree numbers. You set cam at spec and feel like going 4 degrees one way or the other. Which will give you more valve clearance and which way for less? Just curious. M
Okay I see what you are saying but what if it would be a 240 @ .050 and you are hazing the exhaust valve and back of 4 degrees. what would that do! MAdvancing tightens the intake clearance. Retarding tightens exhaust clearance.
Rule of thumb large roller cam BBC about .007 per degree (280 ish duration at .050).
Thank you for easing my mind! for a while I was spinning around in my head which way to go and I think everybody has over thought a problem. Just for your'e info when I degreed the cam in it took 4 degrees to match the numbers on the retard side. Now I am going to a zero setting which will open up the exhaust clearance to be safe and probably I will loose the lazy response (throttle) I have now. Thanks again! MWrong way.
Advance the cam and it will give the exhaust more clearance.....but tighten the intake clearance. Advancing will tighten the intake P/V clearance "X" amount.....and will loosen the exhaust clearance "x" amount.
I think you better check P/V clearance if you are "hazing". Also check valve springs.