Hey, I ran into a little problem with my 305. It has a 270 series cam in it now and I cannot get it to stop running into gas knock issues. I am removing the cam to go to a smaller one since I blew up the 4 speed and have to run my TH400, which does not like the 1200 RPM idle. Will the melling MTC-1 cam work better, it has 420/443 lift, 204/214 duration @.50, and 112 lobe sep. I know it runs well in 350's, but how about a 305?