Dual Pattern for Holley 4150 and QJet
**7/8" taller than stock**Will Not Fit Pre-1965 heads**
Port size will work on Port Matched to Out of Box Edelbrock or cast iron heads only- Will Not work on BP CNC Ported 310/325/or 340cfm
***We recommend checking valley pan clearance due to casting differences and block deck heights. If the intake sits low you can raise with the use of custom Butler Gaskets from Athena SCE-128108-2***
