The heads are bolted down with the recommended ARP bolts (screws), and not studs. I mention that because these Trick flow heads oil more like a small block where the oil travels up the bolt hole, and when using studs you are supposed to enlarge the bolt hole in the head for more clearance.
First time I hear that. Does it say so in the instructions? There must be plenty of engines using studs without having enlarged holes. Will mock up mine and see how much clearance there is. Thanks
