Valve overlap???

[billlsbird]

Hello Everyone , How do I figure what valve overlap my cam has??? I'm not sure if this is all the info I need or not; Ex closes @ 29, Ex opens @ 77, In opens @ 31, In closes @ 63..... Is there any info that I'm missing??? Thanks a bunch, Bill

[steelsixpack101]

the first thing you do is add your exhaust closing time ATDC 29 degrees and your intake opening time BTDC 31 degrees together. so 31+29= 60 degrees of valve overlap.I hope this helps!

[billlsbird]

.....wow! cool Thank You .... bill