Actually the more vertical a shock is the stiffer it is. This is a fine adjustment compared to springs and oil. Once you start "laying down" a shock the closer to parallel to the arm it gets the more of a mechanical advantage the arm has on the shock. This mechanical advantage results is a softer feel to the shock.
Check out the link in the previous post or see if you can find a book by XXX Main titled Touring Car Chassis Set UP Guide. You can find it in hobby shops or on XXX Main website. There IS PLENTY of free info out here on the web if you prefer.
Last edited by Tiger72; 08-14-2009 at 01:50 PM.
Reason: Typo