Our SuperTune Gen 3 HEMI Heads are specifically designed to give 2003-08 5.7 HEMI Heads Apache-like performance. When we're done porting and tweaking, these heads will flow more than 340 CFM! Here's how we do it. After disassembling the heads, we install bronze valve guides. Then we press in new valve seats to the correct depth to make sure they stay in. The heads are then CNC Ported with a competition valve job hand blended in along with a radiused exhaust valve job. Lastly, we install Manley 2.1" intake valves, Manley 1.625" exhaust valves and button it all up with Manley springs, locks & retainers.

OPTIONS - you must select the core charge when ordering. When your heads ship they will have return tags in the box. Once we receive the cores and determine they are acceptable we will return the core charge.