Sequential multi-port is the part that matters here. Instead of spraying all injectors together, each one fires on its own cylinder event, which is what gives clean cold starts, a stable idle and part-throttle fuel economy that batch-fire systems never quite reach. The 4150-style layout means it bolts up where a square-bore carburetor used to sit, so the swap keeps a traditional look.

Edelbrock 36170 Pro-Flo 4 EFI System Specifications:

• Sequential multi-port fuel injection for Chevrolet Gen IV LS7 engines.
• Traditional 4150-style flange with 1.75 in. bores, satin finish.
• 42 lb/hr injectors, supporting up to 675 horsepower.
• Wiring harness, distributor cap, gaskets and 1/8-27 NPT fuel pressure port included.
• Sold as a kit. Verify your engine generation before ordering.