Your numbers do seem real low I have the Edelbrock SC. I think you need to get the tune check. And also your going to need to the JRE fuel line mod for it if your want to get more power out of it. Here is the link for the fuel mod http://www.jreperformanceparts.com/j...el-system.html
If you looking for the 3.5 pulley I have one with the belt if your look for the pulley you can P.M. me. And also you can call Haddad Motorsports (310) 412-8032 ask for Mike
he can help with the tune.