[jrr]

Jake
I am doing the same thing on a 351/385hp. Xs off and 185s on. Just got my Pro-Systems carb which flows 780+ true. They said 6-7# was just fine and I am -8 also. They also put in different throttle base to accommodate the increase flow for the 185s. Did tell me to check plugs and be prepared to jet up when the heads are switched.
Jack