Advanced Engine Design U650CR 650 CFM Ultra Crate Motor Carburetor

The Advanced Engine Design U650CR is a competition-grade 650 CFM carburetor specifically engineered for oval track crate engines, particularly the GM 602 crate motor. Developed through extensive dyno testing and on-track validation, this carburetor delivers optimal power and drivability for circle track racing applications.

Key Features:

• 650 CFM airflow capacity optimized for crate engine performance
• Ultra all-aluminum main body with cast HP metering blocks
• 4-barrel square bore design with mechanical secondary
• Dual inlet fuel system for consistent fuel delivery
• No choke provisions for race-ready configuration
• Tumble polished finish with red anodized accents and chromate coating
• Hand-built, wet flowed, and tested for maximum performance
• Blueprinted throttle bores and boosters for optimal signal strength
• Adjustable fuel circuits for easy tuning
• Custom weighted floats for corner-loading fuel control

This carburetor meets common rule restrictions for oval track racing while delivering the horsepower and throttle response needed for competitive performance. Recommended for GM 602 crate engines in all applications, and suitable for 604 engines on shorter tracks where RPM range varies more than 2,400 RPM. Available for gasoline, E-85, and alcohol fuels.