Most of us with classic Chevys strive to upgrade our rides for the street. We ditch drum brakes for discs, bolt in overdrive transmissions, add air conditioning, and perform a plethora of other upgrades with one goal in mind: better street manners. We've gotten used to modern cars and while we still dig the timeless lines and "soul" of our older cars, we also appreciate the technological advances of the last 40 years. One of the biggest advances in terms of drivability is electronic fuel injection, more commonly referred to as EFI.inline_mediumwraptextright26869450/technical/engines_drivetrain/accessories_electronics/sucp_1001_ez_efi_fuel_injection_systemsucp_1001_01+ez_efi_fuel_injection_system+installed_throttle.jpgTrue