Quote: Advancing the exhaust cam one tooth? what will that do? is this just big bore mod, or will it bring some more fire to the liitle bore motors as well?
This is for anything but the 865 motors, which already have reduced overlap. On your 790cc motors it reduces the overlap 15 degrees which gives you more midrange power. Just do a search in this forum using the keyword "advance", and it'll pull up quite a few threads where it's discussed.