The first one is an old Harold Brookshire cam. I'm still a bit gun shy with the over camming deal. Had to add some compression to get these heads to work right with this cam. i'm still hesitant to jump at a 275 cam. If you remember some have said this E max wedge head is junk. Dwayne told me the bowl area is excessively large and this makes me believe the air slows when it gets to the bowl area allowing fuel to drop out of suspension before reaching the cylinder in a good mix. So to me more compression less duration makes them work, but thats just my theory. Really do like the looks of that cam, but although hesitant, a 275@50 cam is not totally out of question. Looking for all opinions to attack from all angles here. Thanks guys