Camshaft ID help

[Obi-Wan-YJ]

We just bought a 2007 Mustang GT that supposedly has Comp Cams Mutha Thumpr cams in it, but came with no documentation. The idle & torque curve certainly act like a Mutha Thumpr (lopey & gutless below 4000 rpm), but I'd like to verify that. We currently have the valve covers off to replace gaskets & one bad phaser, so this is my best shot to positively ID the cams.

There's no markings on the front end or front flange of the cam, or on the rear end of the main shaft. The rear face of the rear lobe does have markings on it. The left (driver) side has "01A" stamped into it, and "WV2569-16 CC" engraved by hand. The right side cam has "WV2605-16" engraved on the rear lobe's rear face, as best I can tell. The base of each lobe appears to be slightly radiused into the main shaft, indicating that it was ground from a single piece rather than having the lobes pressed on.

I also tried to measure the lobe & valve lift with my dial indicator, but got confusing results. I measured multiple times and got 0.223" lobe lift for both intake & exhaust, which would equate to 0.380" of valve lift with the stock 1.7x finger followers. When I tried to measure the valve lift directly (hard, given how far inset they are), I got 0.484", which would indicate a 2.17x ratio. I apparently didn't do something right there.

My research says that the stock Ford cam has 0.439" of valve lift, and the Mutha Thumpr has 0.450" of valve lift.

I've reached out to Comp Cams, but haven't gotten a response yet. Their online master catalog doesn't show any "WV", "2569", or "2605" anywhere.

Can any of you help me track down what kind of cams we have? Is there anywhere else I should look for ID info?

 

[Midlife Crises]

To measure the valve lift accurately at the valve you have to remove a follower and lash adjuster for one lobe. Replace the lash adjuster with an adjustable one and put the follower back in place. Adjust the lash adjuster to zero lash and then measure the valve lift with a dial indicator while slowly rotating the engine by hand. Do one intake and one exhaust and you have the valve lift for both.
If you have a degree wheel you can stick it to the harmonic damper, zero it to cylinder 1 top dead center and record when you get 0.050” lift opening, max lift and 0.050” lift closing. Do this for the intake and exhaust valves on cylinder 1 and you can calculate the lobe center, lobe separation angle and max lift as well as know when each valve lifts off the seat. Compare these numbers to catalogs and you might find a match.

 

[Dino Dino Bambino]

I also tried to measure the lobe & valve lift with my dial indicator, but got confusing results. I measured multiple times and got 0.223" lobe lift for both intake & exhaust, which would equate to 0.380" of valve lift with the stock 1.7x finger followers.

AFAIK the stock cam follower ratio is 2.0:1. Assuming you're measuring lobe lift correctly, 0.223" lobe lift = 0.446" valve lift.
That only tells you that you have Comp cams NSR cams but, without the duration numbers, you won't know exactly which ones. Given the way your engine behaves, I'd say they pretty likely ARE Mutha Thumpr.