The Edelbrock part #35823 Pro-Flo 4 XT Sequential Port EFI System for 1986 & Earlier Small-Block Chevy engines with Vortec/E-Tec Cylinder heads has the latest technology and features. The EFI system comes complete with a black Pro-Flo XT intake manifold and 29 Lb/Hr injectors capable of 450 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA high-quality harness with clearly labeled connections for a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and is half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We've added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU's self-learning capability to continually adjust the calibration to get maximum performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started. Best of all, the E-Tuner 4 app is free and can be downloaded from the Google Play Store, allowing you to use an Android based smart phone or tablet. If you don't have a compatible device, then we also offer kits that include a 7" Android tablet with the E-Tuner 4 app pre-installed. Multiple dash displays are included to allow you to monitor engine vitals from an Android smart phone or tablet. Pro-Flo 4 does not require laptop tuning.
Technical Bulletin
Installation Instructions
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
1980-1985	Avanti	II	Base
1985	Avanti	II	GT
1980	Buick	Century	Base
1980	Buick	Century	Estate
1980	Buick	Century	Limited
1980	Buick	Regal	Base
1980	Buick	Regal	Limited
1980-1982	Checker	Marathon	Base
1980-1982	Checker	Marathon	Deluxe
1980	Chevrolet	C10	Big Ten
1980-1981	Chevrolet	C10	Cheyenne
1981-1986	Chevrolet	C10	Custom
1980	Chevrolet	C10	Custom Deluxe
1981	Chevrolet	C10	Deluxe
1980-1986	Chevrolet	C10	Scottsdale
1980-1986	Chevrolet	C10	Silverado
1981-1986	Chevrolet	C10 Suburban	Custom
1980	Chevrolet	C10 Suburban	Custom Deluxe
1981	Chevrolet	C10 Suburban	Deluxe
1980,1982,1984-1986	Chevrolet	C10 Suburban	Scottsdale
1980,1982-1986	Chevrolet	C10 Suburban	Silverado
1996-1997	Chevrolet	C1500	Base
1996-1998	Chevrolet	C1500	Cheyenne
1999	Chevrolet	C1500	LS
1996-1998	Chevrolet	C1500	Silverado
1996-1998	Chevrolet	C1500	WT
1996-1999	Chevrolet	C1500 Suburban	Base
1996-1999	Chevrolet	C1500 Suburban	LS
1996-1997,1999	Chevrolet	C1500 Suburban	LT
1980-1981	Chevrolet	C20	Cheyenne
1981-1986	Chevrolet	C20	Custom
1980	Chevrolet	C20	Custom Deluxe
1981	Chevrolet	C20	Deluxe
1980-1986	Chevrolet	C20	Scottsdale
1980-1986	Chevrolet	C20	Silverado
1981-1986	Chevrolet	C20 Suburban	Custom
1980	Chevrolet	C20 Suburban	Custom Deluxe
1981	Chevrolet	C20 Suburban	Deluxe
1980,1982,1984-1986	Chevrolet	C20 Suburban	Scottsdale
1980,1982-1986	Chevrolet	C20 Suburban	Silverado
1996-1997,1999-2000	Chevrolet	C2500	Base
1996-1998	Chevrolet	C2500	Cheyenne
1999-2000	Chevrolet	C2500	LS
1996-1998	Chevrolet	C2500	Silverado
1998	Chevrolet	C2500	WT
1996-1999	Chevrolet	C2500 Suburban	Base
1996-1999	Chevrolet	C2500 Suburban	LS
1996-1997	Chevrolet	C2500 Suburban	LT
1980-1981	Chevrolet	C30	Cheyenne
1981-1986	Chevrolet	C30	Custom
1980	Chevrolet	C30	Custom Deluxe
1981	Chevrolet	C30	Deluxe
1980-1986	Chevrolet	C30	Scottsdale
1980-1986	Chevrolet	C30	Silverado
1996-1997,1999-2000	Chevrolet	C3500	Base
1996-1998	Chevrolet	C3500	Cheyenne
1999-2000	Chevrolet	C3500	LS
1996-1998	Chevrolet	C3500	Silverado
1980	Chevrolet	Camaro	Base
1980-1986	Chevrolet	Camaro	Berlinetta
1985-1986	Chevrolet	Camaro	Iroc-Z
1980	Chevrolet	Camaro	Rally Sport
1981-1986	Chevrolet	Camaro	Sport
1980-1986,1996-2002	Chevrolet	Camaro	Z28
1982	Chevrolet	Camaro	Z28 Indianapolis 500 Pace Car
1998-2002	Chevrolet	Camaro	Z28 SS
1986	Chevrolet	Caprice	Base
1980-1986,1996	Chevrolet	Caprice	Classic
1986	Chevrolet	Caprice	Classic Brougham
1981-1982	Chevrolet	Caprice	Classic Estate
1980-1981	Chevrolet	Caprice	Classic Landau
1980	Chevrolet	Caprice	Classic Sport
1980-1982,1984-1986,1996-2002	Chevrolet	Corvette	Base
1982,1996	Chevrolet	Corvette	Collector's Edition
1996	Chevrolet	Corvette	Grand Sport
1986,1998	Chevrolet	Corvette	Indianapolis 500 Pace Car
2001-2002	Chevrolet	Corvette	Z06
1980-1986	Chevrolet	El Camino	Base
1981-1986	Chevrolet	El Camino	Conquista
1980-1981	Chevrolet	El Camino	Royal Knight
1980-1986	Chevrolet	El Camino	SS
1996-2002	Chevrolet	Express 1500	Base
1996-2002	Chevrolet	Express 1500	LS
2001-2002	Chevrolet	Express 1500	LT
1996-2002	Chevrolet	Express 2500	Base
1996-2002	Chevrolet	Express 2500	LS
1996-2002	Chevrolet	Express 3500	Base
1996-2002	Chevrolet	Express 3500	LS
1983	Chevrolet	G10	Base
1980-1986	Chevrolet	G10	Beauville
1981-1984,1986	Chevrolet	G10	Bonaventure
1980-1986	Chevrolet	G10	Chevy Van
1980-1986	Chevrolet	G10	Sportvan
1980-1986	Chevrolet	G20	Beauville
1983-1984	Chevrolet	G20	Bonaventure
1980-1986	Chevrolet	G20	Chevy Van
1980-1981	Chevrolet	G20	Nomad
1980-1986	Chevrolet	G20	Sportvan
1980-1986,1996	Chevrolet	G30	Beauville
1983-1984	Chevrolet	G30	Bonaventure
1980-1986,1996	Chevrolet	G30	Chevy Van
1980-1986,1996	Chevrolet	G30	Hi-Cube
1980-1986,1996	Chevrolet	G30	Sportvan
1980-1985	Chevrolet	Impala	Base
1981-1982	Chevrolet	Impala	Estate
1980	Chevrolet	Impala	Sport
1996	Chevrolet	Impala	SS
1980-1981	Chevrolet	K10	Cheyenne
1981-1986	Chevrolet	K10	Custom
1980	Chevrolet	K10	Custom Deluxe
1981	Chevrolet	K10	Deluxe
1980-1986	Chevrolet	K10	Scottsdale
1980-1986	Chevrolet	K10	Silverado
1981-1986	Chevrolet	K10 Suburban	Custom
1980	Chevrolet	K10 Suburban	Custom Deluxe
1981	Chevrolet	K10 Suburban	Deluxe
1980,1982,1984-1986	Chevrolet	K10 Suburban	Scottsdale
1980,1982-1983,1985-1986	Chevrolet	K10 Suburban	Silverado
1996-1997	Chevrolet	K1500	Base
1996-1998	Chevrolet	K1500	Cheyenne
1999	Chevrolet	K1500	LS
1996-1998	Chevrolet	K1500	Silverado
1996-1998	Chevrolet	K1500	WT
1996-1999	Chevrolet	K1500 Suburban	Base
1996-1999	Chevrolet	K1500 Suburban	LS
1996-1997,1999	Chevrolet	K1500 Suburban	LT
1980-1981	Chevrolet	K20	Cheyenne
1981-1986	Chevrolet	K20	Custom
1980	Chevrolet	K20	Custom Deluxe
1981	Chevrolet	K20	Deluxe
1980-1986	Chevrolet	K20	Scottsdale
1980-1983,1985-1986	Chevrolet	K20	Silverado
1981-1986	Chevrolet	K20 Suburban	Custom
1980	Chevrolet	K20 Suburban	Custom Deluxe
1981	Chevrolet	K20 Suburban	Deluxe
1980,1982,1984-1986	Chevrolet	K20 Suburban	Scottsdale
1980,1982-1983,1985-1986	Chevrolet	K20 Suburban	Silverado
1996-1997,1999-2000	Chevrolet	K2500	Base
1996-1998	Chevrolet	K2500	Cheyenne
1999-2000	Chevrolet	K2500	LS
1996-1998	Chevrolet	K2500	Silverado
1998	Chevrolet	K2500	WT
1996-1999	Chevrolet	K2500 Suburban	Base
1996-1999	Chevrolet	K2500 Suburban	LS
1996-1997	Chevrolet	K2500 Suburban	LT
1980-1981	Chevrolet	K30	Cheyenne
1981-1986	Chevrolet	K30	Custom
1980	Chevrolet	K30	Custom Deluxe
1981	Chevrolet	K30	Deluxe
1980-1986	Chevrolet	K30	Scottsdale
1980-1986	Chevrolet	K30	Silverado
1996-1997,1999-2000	Chevrolet	K3500	Base
1996-1998	Chevrolet	K3500	Cheyenne
1999-2000	Chevrolet	K3500	LS
1996-1998	Chevrolet	K3500	Silverado
1980	Chevrolet	K5 Blazer	Cheyenne
1981-1986	Chevrolet	K5 Blazer	Custom
1980	Chevrolet	K5 Blazer	Custom Deluxe
1981	Chevrolet	K5 Blazer	Deluxe
1984	Chevrolet	K5 Blazer	Scottsdale
1980-1986	Chevrolet	K5 Blazer	Silverado
1980-1981	Chevrolet	Malibu	Base
1980-1983	Chevrolet	Malibu	Classic
1980	Chevrolet	Malibu	Classic Estate
1980-1981	Chevrolet	Malibu	Classic Landau
1980	Chevrolet	Malibu	Classic Sport
1980	Chevrolet	Malibu	Estate
1980	Chevrolet	Malibu	Sport
1981-1986	Chevrolet	Monte Carlo	Base
1983	Chevrolet	Monte Carlo	CL
1980-1981	Chevrolet	Monte Carlo	Landau
1986	Chevrolet	Monte Carlo	LS
1980	Chevrolet	Monte Carlo	Sport
1983-1986	Chevrolet	Monte Carlo	SS
1996-1999	Chevrolet	P30	Base
1996-1999	Chevrolet	Tahoe	Base
2000	Chevrolet	Tahoe	Limited
1996-1999	Chevrolet	Tahoe	LS
1996-1999	Chevrolet	Tahoe	LT
2000	Chevrolet	Tahoe	Z71
1985	Excalibur	Phaeton	Anniversary
1983-1984,1986	Excalibur	Phaeton	Base
1980-1986	GMC	C1500	Base
1980	GMC	C1500	Heavy Half
1980-1986	GMC	C1500	High Sierra
1980-1986	GMC	C1500	Sierra Classic
1980-1982	GMC	C1500	Sierra Grande
1997	GMC	C1500	Sierra GT
1996-1999	GMC	C1500	Sierra SL
1996-1999	GMC	C1500	Sierra SLE
1996-1999	GMC	C1500	Sierra SLT
1996-1998	GMC	C1500	Sierra Special
1980-1982	GMC	C1500	Street Coupe
1980-1986,1996-1999	GMC	C1500 Suburban	Base
1980-1986	GMC	C1500 Suburban	High Sierra
1980-1986	GMC	C1500 Suburban	Sierra Classic
1980-1982	GMC	C1500 Suburban	Sierra Grande
1996-1999	GMC	C1500 Suburban	SLE
1996-1999	GMC	C1500 Suburban	SLT
1980-1986	GMC	C2500	Base