predator 420cc

Looking for some advice here. Have experience with 212's but no experience with the hemi 420's. Currently, the engine is stock except for the stage one kit to hold the place for the Mikuni 34mm and custom exhaust. Looking for top end performance. The only part I currently have is a billet...

Hello everyone Im looking for a torquey camshaft for a predator 420cc engine. I have a bone stock one laying around as i speak without a unit to put it on. I plan on getting the stage one kit and doing a governor delete as well as rejetting the main and pilot jet.i wanna keep the stock...