Review on 🚀 Pioneer PF-580-4 Cylinder Head Insert (4pk) Ford 77-97 - Enhanced Performance & Durability for Your Ford Engine by John Clarey

I bought 2 sets of air pump holes in 302 and 351W. Pass the tap through the hole to clean the threads of carbon deposits. Add some high temp silicone to the end of the fork. Screw it in with a screw (lubricate the thread of the screw with oil). Tighten it firmly and then remove the screw. The inlay remained completely normal in my head. Seals leaks and allows for the installation of accessories. worth your money.