These heads feature closed style 64cc combustion chambers and 190cc intake runners. In addition to the nearly 40lb weight savings these heads offer over factory cast iron heads, they will yield about a 45hp gain over stock E7TE castings. In unported form these heads will support 400+ horsepower on pump gas. If you are looking for a race grade head that is comparable to Edelbrock, Dart, Trick Flow and AFR at a fraction of the price look no farther then these. These heads are machined and assembled by us, they work great on Carburetor and fuel injection applications!!TH The features of these are as follows. Heads are pressure cast from premium quality 2024 aluminum alloy. Unlike many inexpensive aftermarket heads that are sand cast these are cast in steel permanent type molds. This offers a stronger more durable cylinder head with consistent thickness throughout. 400 thick deck surfaces for maximum head gasket longevity.
If you are running nitrous or a supercharger and have had problems with blown head gaskets and stock heads the thicker surfaces will virtually eliminate this problem. After machining the heads have magneese bronze valve guides installed along with stellite valve seats. This is the best available combination for street use with unleaded gas. If you are racing the stellite valve seats offer much longer seat life then most competitors ductile iron valve seats.
Both the intake and the exhaust incorporate three angle valve seats to maximize both low and medium lift flow. The heads come fully assembled with 2.02 1 piece stainless steel intake valves and 1.60 exhaust valves. These valves incorporate swirl polished heads and undercut stems. These heads require NO extra knotching or relieving for piston clearencing.Valve springs installed on these heads have 115lbs closed pressure and will accommodate. These will work fine with just about any hydraulic or solid flat tappet camshafts and roller camshafts. If you are using a Ford motorsport E, B or F camshaft these springs will work fine as well. Finishing off the heads are chromoly valve spring retainers and viton positive style valve stem seal. Guide plates are 3/8 pushrod. 7/16 x 3/8 rocker studs (60ftlb torque). 1.6 Stainless steel Roller Rockers. 7/16 Cylinder Head Studs (70ftlb torque). Recommended Spark Plugs are 3934 AutoLite. The item "Ford 289 302 332 347 427 5.0 Top End Kit Aluminum Heads GT40 EFI carburetor" is in sale since Thursday, July 6, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "apmachine44" and is located in Fresno, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Viet nam.