ok, sorry for all this guys but im trying to learn this stuff, went to my dads and broke out his high dollar mic's remeasured,got a little different numbers also i calculated at 1.7 rockers, cam specs shows 1.73 and.. am i calculating intake lift or exhaust lift.. with me remeasuring and using different ratio, my measurements nailed the advertised exhaust lift of .588.. intake lift is 5.62.. also sumit online has different numbers listed than what was in the card with the cam even though the card has the same part number and edelbrock online is completely different than the card with the same part number,