Drop inthis means no machining... Beehive spring kit for GM Vortec heads. 560 lift maxdepending on seal thickness, most sets I check have. 520-550 clearance, springs are good to.
560 , but you need to check seal to retainer clearance! , good for flat tappet cams or mild hyd rollers. Pac racings retainers, beehive springs and hardened locks. The item "GM Vortec Valve Spring Beehive Conversion Kit. 560 lift SBC" is in sale since Thursday, November 8, 2018.
This item is in the category "eBay Motors\Parts & Accessories\Performance & Racing Parts\Auto Performance Parts\Driveline & Transmission\Flywheels". The seller is "powellmachine" and is located in Iva, South Carolina. 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, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Viet nam.