What exactly does Crane Cams or Comp cams do as a company? I thought they designed and dyno tested cams for engines. If they were not successful in what they did they wouldn't still be around. Evidently they do something the car manufacturers don't do. Although Ford has stepped up in the past and has thrown some pretty radical (used to be aftermarket only) cams in new mustangs and warrantied them.

I relize what you are saying. I already said it. Yes, there are trade offs. These trade offs don't necessarily include decreased engine life. They may if you are radically modifing the stroke and bore and drastically changing cam profiles. I don't think that's what's going on here.

Most of us would agree that if we could gain 15 hp and loose a mile per gallon we'd do it in a heartbeat. Or even get a lopey idle, who cares.

A simple regrind isn't going to change your longevity. It it very well could change your gas milage, your quality idle (not in a 2.6 to begin with), and possibly your vaccum. But you have to remember everything works together as a system. The fact that I have already changed a bunch of stuff on my engine to begin with says that I'm already outside of the scope of Isuzu manufacturing. And yes I like it better. Is it better? In my opinion it is.

I agree that manufacturers don't pick cam timing out of the air, but I believe it's based more on emmissions, gas milage, and a flat torque curve than reliablity.

I will be contacting Delta and Calmini and see what they have to say about engine life and the use of their cams.

I doubt any of us know personally a cam profile designer that would be candid. Although I doubt Calmini or Delta will tell me that using their cam will shorten my engine life (even if it would) They wanna sell cams.