cam

I have a 1970 400 GTO, I'm looking for cam recommendations. I have 3 angle valve seat, going to install threaded studs, looking for more all around power. Any suggestions greatly appreciated. Tom

The previous owner said the cam was called “s16” I was wondering if anyone might have any specs on it? Or even know if that’s a legit cam. I mean the car is definitely cammed it’s nasty.