If you're looking to give your carburetor a serious boost, this retrofit main body kit is just what you need! It transforms the 0-4777S (650 CFM), 0-4778S (700 CFM), and 0-4779S (750 CFM) carburetors into a powerful 750 CFM HP main body. Say hello to increased horsepower, torque, and airflow!

Important Downloads:

• Instructions for Part# 134-300S

Features:

• All Necessary Parts Are Included
• Easy Installation with Common Hand Tools
• Factory Pre-Calibrated for Optimal Performance and Smooth Drivability Across Various Applications
• Reduces Turbulence and Ensures Smooth Air Entry into the Venturi
• Removes the Choke Tower and Related Hardware from Standard Holley Double Pumper®
• Eligible for Holley Contingency Programs

Specifications:

• Emission Code: 5
• Product Type: HP Main Body Retrofit Kit
• Warranty: Limited 90 Days