So my challenger has a motor home 440 with a cast crank. The balancer is new unknown brand but looks like a steel crank balancer. The issue is some vibration at idle. I thought it was a misfire but now I’m thinking not. Goes away at around 1200 to 1400 rpm but it feels like solid mounted engine at idle. I have a couple motor home 440s and was thinking of just swapping on a balancer from one of them. Any thoughts.
