I have read up on it a and finally have a much better understanding I think!
The 774's are
Timing Data Duration V/L V/C Cold F/L LATDC
Inlet Open 30 BTDC Close 62 ABDC 274 9.09mm 0.210mm 106 1.80mm
Exhaust Open 62 BBDC Close 30 ATDC 274 9.04mm 0.254mm 106 1.75mm
which I think means it takes 30deg to get to 1mm lift, then 106x2=212deg duration where the the valve is at least 1mm open, and then another 30deg to get valve from 1mm to completetly shut.
This means duration at 1mm is 272-30-30=212deg.
This is what I got from it, hope it helps the people who also didn't know. But if I am wrong, then please correct me as I don't want to give false information!
Still unsure on some of the other numbers so will need to research.
I have contacted the person I bought the 250deg 9mm inlet cam from, and asked him to give me the more detailed cam specs. So I can really compare the 774 cams to my existing setup.
