PREDATOR 420 CYLINDER HEAD BIG VALVE 42mm intake seat 34mm exhaust
Honda gx390 head big valve 40-43mm intake seat installed 31-34mm exhaust. Big valve gx390 head. Clone head casting gx390 style (new). 1.819 OD intake seat installed (46+ mm OD seat). Super thick seat , this is special… This is what is needed to cut the perfect valve seat angles!! Intake seat is a blank seat and is the perfect setup for the angles of your choice.. From my time on the flow bench the seat angles make or break flow!!! This seat is what you NEED to cut that nice 60° angle deep! Exhaust seat is capable of running up to a 34mm exhaust valve. This head is the biggest intake seat you can install. Perfect for the open modified class of engines that make the max HP. Chrome molly seat for strong long lasting life no matter what fuel you use gas / methanol. This is en extreme head… For professional engine builders only!! This is one serious head!!! With this size seats you are absolutely going to be running with the most air you can move.. This is the optimum seat size for huge carbs and high rpm.. You can run a 44mm valve on this intake seat if you wanted.. This seat is huge.. I had to make a custom cutter just to be able to install this seat.. There is so much seat material that you can shape this seat the way you want it.. And for those who know seat shape is critical to making power.. You can get the shap you need from this one.. This is the seat i used in my 63HP record setting big block.. Its all about seat design.. If you can increase that than you will make more power.. And this is the seat that can deliver.. You can cut that 60° angle long and give the seat the tulip shape you want.. This head is not ported and the seats are blanks.. If you need cuts let me know.. Porting , guides , welded intakes etc.. You know who to call.. Info on you tube.. Thank you for your support. The item “PREDATOR 420 CYLINDER HEAD BIG VALVE 42mm intake seat 34mm exhaust” is in sale since Monday, November 11, 2019. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Lawn Mowers, Parts & Accessories\Lawn Mower Parts”. The seller is “pauzukauska_0″ and is located in Hyde Park, Massachusetts. This item can be shipped to United States, Canada, United Kingdom, China, Mexico, Germany, Japan, Brazil, France, Australia, Russian federation, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Ukraine.
- Type: Valve
- MPN: Does not apply
- Brand: Unbranded