Cylinder head porting.
Date: January 01, 2018 08:28PM
I do cylinder head porting on the poly heads as well as all other cylinder heads, the poly heads get bronze guides, larger stainless valves, full porting, 10 degree moly retainers and locks and dual valve springs. Add some real power to your poly ported heads pick up 60 cfm over stock heads. Call 724-290-2497 with questions.