Re: port and polish question
Can't speak from experience when referring to a Jeep, but I know that on just about any vehicle it's worth something. Generally you will be looking at 15-40 hp. I know thats a pretty wide range but it really depends on how restrictive the heads are from factory. Seems the 05-07 4.7's are not exactly big powerhouses so i'd say you could safely add 30 or so hp. You will probably have to get the pcm tuned due to the drastic change in airflow,plus you should have other intake and exhaust mods to support the additional flow.(CAI.ported TB,good catback system)
2014 Laredo Altitude. Tinted, SRT Eibachs, Viper replicas.