I would like to go with those rhodes lifters but I don't want to put a new cam in. Too much work. I have the vacuum advance plugged and have the intial at 10 degrees. I don't know what its at 3000 rpm I need to check that. It already turns over pretty hard when its warm. I don't know if will start good at 12 degrees. I have a new battery but maybe my starter is getting a weak or hot. Do you think this will help my vacuum. What do you guys think. The reason I picked this cam is because of the build off of Comp Cams website. [URL="http://www.compcams.com/Community/Articles/Details.asp?ID=1108284073" It shows in there build that it pulls 15.7 inches of vacuum I'm getting about 2 inches less of vacuum.