Proform Billet Aluminum Throttle Base Plate - Holley 650 CFM, 700 CFM, 750 CFM, 800 CFM - 4150 Series H776003S 1955-1957 Chevrolet One-Fifty Series

1955-1957 Chevrolet One-Fifty Series

1969-1972 Chevrolet Biscayne

and 401 V8 engines with 4

500 Long Silver

Proform Billet Aluminum Throttle Base Plate - Holley 650 CFM, 700 CFM, 750 CFM, 800 CFM - 4150 Series H776003S 1955-1957 Chevrolet One-Fifty SeriesUpgrade your carb with PROFORM's new Billet Throttle Base Plate! Made from solid billet construction versus die cast aluminum for added strength and durability this base plate comes with button torx head throttle plate screws, adjustable secondary air flow cam bracket, timed and full vacuum tubes for accessories and tuning, slip link mechanical secondary linkage, and power valve blow out protection! Component for use on Holley 650 CFM through 800 CFM