Can I check degreed cam install using the open and close specs on the cam card? Do the o/c intake numbers represent when the valve starts opening, .050 before and after full lift?

the at .050 numbers are .050 from the seat. to find centerline, technically you can use any number you want, 50 is just an easy round number to work with. zero ur wheel off piston tdc, then zero ur indicator at max lift, then go to .050 before max lift, write down the degree, then roll through max lift and stop at .050 after, and write that number down. add them together and divide by two. you will basically do the same thing with the piston to find true top dead center of the piston, that you will do with the lobe to essentially find top dead center of the lobe in relation to the crank.

It depends on the cam companys info, most will have two specs, one at either .020 or .0006 and .050. On either of those you need to check them on the lifter The cams are usually more accurate at .050 On intake lobe seperation angle I check that last at the retainer with a solid lifter(on hydraulic cams) with the lash set at zero and then, if it is within one degree of where I want it, I will then check the exhaust lobe seperation angle The reason being is that if the cam says it is ground on 110 lobe seperation angle when you advance the intake lobe, move it closer to TDC, the exhaust lobe will, should, move the other way away from TDC the exact same amount as the intake moves closer(your closing the ehaust valve sooner), IE intake in at 106 intake lobe timing on a 110 lobe seperation cam then the exhaust max lobe lift should be at 114 BTDC I hope this makes sense and helps

Yes. Thanks guys. IV a ready degreed cam and got The number I needed. Just want to check open and close numbers from wheel for piece of mind.

Get some light checking springs and make sure to check piston to valve contact clearances

Absolutly. Not my motor but I'll make sure he does as this will be a Blown application. About 1000hp he tells me.

If it is a alumimun rod motor add another .020 to .050 V to P clearances, or what ever the rod maker says to run