I'm with abodyjoe on this one I use that 484/284 cam a lot it was the stock hemi grind cam. If you don't have at least a 3000-3200 stall it will not idle in gear the hemi's had what was called the J converter and everyone I have had stalled around 3200. The only other thing is make sure you have not vacuum leaks around the intake if the heads have been milled or the block decked the intake gasket may not be sealing real good. one easy way to check that is pull the pcv valve out of the valve cover and get a propane cylinder with a torch head on it and some rubber hose put the hose in the valve cover and turn the gas on if the rpm's go up you have a vacuum leak do both sides of the engine just use the oil filler cap or breather hose on the other side. Good Luck
