I bought a cam from a member here, and I want to make sure it is what it's supposed to be. I saw a thread a few days ago about id ing thunder's cams, but I can't seem to find it now. Here is what it is supposed to be: Thunder 236/230 .602/.575 112 LSA. It doesn't have the typical TRxxx engraved into the back of it. It just has A6403 hand engraved, and some other cast numbers halfway ground off. But the location of the cast numbers aren't like the ones in my stock cam. Here is a pic, but its kinda hard to tell.

 

anybody?

 

why dont you ask thunder what they grind on the end of their cams