I'd start by looking the cam over for some sort of numerical identification. The cam grinder may have scribed a grind number onto the cam. If there's none, see if you can find out if this was a custom grind or something off the shelf from Ford Motorsports. If the cam was custom, you'll have to just measure everything yourslef.
If you can find a list of cams offered in the crate engines, you may be able to ID it by simply finding the lift of both I and E lobes. It really will depend on how different the lift values are for each cam offered in the crate engines.
Lift can be determined using a caliper or a micrometer by measuring the highest point on each lobe and subtracting from the base circle. Lift is most accurately determined using a dial indicator by observing the total indicated range.
If lift alone doesn't ID the cam, then you'll have to set up a dial indicator and a degree wheel and measure the I and E events. A cam card will typically have an advertised duration along with the duration at some specified amount of lift. For hydraulic cams, they will often specify duration at .050" of lift and for a solid it's often at .020".
I suggest you go to the
Wallace Racing Calculators and get familiar with camshaft terminology and what it means...this will help you understand what you're measuring with your indicator and degree wheel.
How you actually fixture your cam will depend on what you have available....if you have a lathe, for example, you could chuck your cam and use that...if you have a set of V-blocks, you could use those...the most simple approach would be to just use an engine block, crank, and timing set.
And then there's the machine shop. You may just want to save yourself all of this effort and take it to a reputable machine shop and pay them to measure it.
Best wishes with this, let us know what you end up doing and what cam you have!
BT
One more detail. Remember to multiply the lift you measure at the lobe by 1.73 (the rocker arm ratio) to get the lift at the valve. Usually both will be listed, but if not, you have both values to compare.