After reading several threads on this site and the old one, I get the impression no one ever upgrades the cams in their 308QV. Almost all of the discussions I've seen on performance cams in 308s refers to the 2v engine. I've read that the QV doesn't like a lot of duration* and that there isn't enough clearance with the stock pistons to go much higher on lift. So is it that QV cams produce about as much power as they can without changing pistons? Are performance cams worthwhile in a QV with stock pistons if the owner was willing to switch to an EFI setup? What if he wanted to stick with the K-Jet FI? Thanks, Ken * I'm not sure if this is something specific to the 308qv engine or if this is true of all 4v engines in general.