Engine Cams

I had a 96 GT I installed Comp 262's. Very little lope but bumped the HP. I never did get an idle vid of it. Wish I would have. I had a friend who did 270's in his 98 GT and it was a nice lope. Took a bit to get it tuned so it would idle but he didn't degree them or change the valve springs. I paid $300 for the cams and did the work myself. If you have it done by a shop I see a minimum of $1500 labor. That's a lot of cash for sound.

To add you have to degree the cams as you install them. It isn't something that is done to the cams themselves but a process to avoid piston to valve contact. I didn't do that because I went with a mild cam. My friend who did 270's reported a light tap at start-up and went away. Can't tell you what he experienced for sure but the car ran fine for a few years until he wrecked it. That said, my belief is the earlier 4.6's were built with those cam tolerances in mind. As the engine developed in the later years I think the build got a little "sloppy" as far as cams installs at the factory which is why more of the 99 and up cars experienced PTV while the older cars didn't. Granted this is ONLY my opinion.