Proform Billet Aluminum Adjustable Metering Block - Purple Anodized - Holley 4150 H760C30XXL Safely seals engine for storage

Safely seals engine for storage or transport keeping harmful debris out

Also ideal for Chevy 4

1963-1977 Mercury Comet

672 in Knurl

Proform Billet Aluminum Adjustable Metering Block - Purple Anodized - Holley 4150 H760C30XXL Safely seals engine for storageFurther enhance the performance of your PROFORM high flow main body with billet metering blocks. Machined from solid aluminum, virtually eliminates porosity problems, and will not warp. Features changeable idle feed restriction with additional upgrades available for racing applications. May not be legal for sale or use in California or on many pollution controlled vehicles. PROFORM invites racers to experience the strength, innovation, and power