Bonneville America Forums Forums Technical Forums Performance Mods This is the "stupid question" of the week for.....

.....all you perfomance experts.

If you use the 790 cams or the thunder cams in an 07 speedmaster with the wimpy 865 cams, will you need to rejet if you touch NOTHING ELSE?

I would assume that an immediate valve adjustment would be in order, or is that the stupid STATEMENT of the week?