Holley EFI Map Sensor Naturally Aspirated 56341111 1964-1965 GMC B3500

1964-1965 GMC B3500

25 Degree Layback

(20) Rivet Terminal

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Holley EFI Map Sensor Naturally Aspirated 56341111 1964-1965 GMC B3500Holley is quickly becoming The New Standard In EFI! Holley's HP ECU is standard equipment on the 2013 2014 Chevrolet COPO Camaro and Holley's EFI throttle body powers every NASCAR Cup Series team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All Star race. But that's not