FlowTech LS Swap Exhaust Manifolds, Natural Cast Finish 11730FLT

Name: FlowTech LS Swap Exhaust Manifolds, Natural Cast Finish 11730FLT
Brand: FlowTech
SKU: 4006350
Price: 371.99 CAD
Availability: InStock

$371.99 ea

NEWARRIVING SOONEstimated Ship Date 06/12/2025 (If Ordered Today)32 Available from HOLLEY PERFORMANCE PRODUCTS as of 05/24/2025

Model: 4006350

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Description Vehicle Fitment Downloads Specifications Reviews (0) Product Q&A Related Products

These Flowtech cast iron exhaust manifolds have a 2.25-inch outlet, natural cast finish, and are designed to hug close to the engine block so they fit into a wide variety of replacement and engine-swap applications at a budget-friendly price. Being cast iron means they will provide years of leak-free performance with less under hood noise than traditional headers. Plus, their shorty design means you can route exhaust tubing close to your frame/floor pan for maximum ground clearance.

Features:

Intended for GM LS engine swap applications where durability and leak-free sealing is desired at a budget-oriented price
Nickel plated steel mating flanges included (mating flange fasteners are not included)
2.25 inch outlet diameter offers improved flow for maximum performance from a cast iron exhaust manifold
2 bolt exit flange configuration matches the E-rod exhaust manifolds for a factory like fitment. This allows the use of factory gaskets and fasteners if desired, for an original quality seal and fitment
Cast from Hi-Silicon-Moly Ductile Iron to provide durability and corrosion resistance
Tight tuck design provides universal fit for most popular chassis and a clean traditional muscle car appearance
Available in plain as-cast finish or with black or silver ceramic coatings for reduced engine compartment temps and improved corrosion resistance

Downloads:

Download Name	File Size
199r11993.pdf	332.03KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.

Make	Model	Submodel	Years	Fitment Notes
Buick	GS 350	Base	1968 - 1969	LS Swap
Buick	GS 400	Base	1968 - 1969	LS Swap
Buick	GS 455	Base	1970 - 1972	LS Swap
Buick	GS 455	GSX	1970	LS Swap
Buick	GS	Base	1970 - 1972	LS Swap
Buick	Gran Sport	Base	1965 - 1967	LS Swap
Buick	Regal	Base	1978 - 1987	LS Swap
Buick	Regal	Custom	1988	LS Swap
Buick	Regal	Estate Wagon	1982 - 1983	LS Swap
Buick	Regal	GNX	1987	LS Swap
Buick	Regal	Grand National	1984 - 1987	LS Swap
Buick	Regal	Limited Turbo	1982	LS Swap
Buick	Regal	Limited	1978 - 1988	LS Swap
Buick	Regal	Sport	1978 - 1982	LS Swap
Buick	Regal	T-Type	1983 - 1986	LS Swap
Buick	Skylark	350	1970 - 1972	LS Swap
Buick	Skylark	Base	1964 - 1972	LS Swap
Buick	Skylark	Custom	1968 - 1972	LS Swap
Buick	Special	Base	1964 - 1969	LS Swap
Buick	Special	Deluxe	1964 - 1967	LS Swap
Buick	Sportwagon	Base	1964 - 1972	LS Swap
Buick	Sportwagon	Custom	1966 - 1969	LS Swap
Chevrolet	Blazer	Base	1973 - 1974	LS Swap; 2-Wheel Drive Vehicles
Chevrolet	C10 Pickup	Base	1963 - 1974	LS Swap
Chevrolet	C10 Pickup	Base	1967 - 1972	LS Swap; 2WD
Chevrolet	C10	Big Ten	1978 - 1980	LS Swap
Chevrolet	C10	Cheyenne	1975 - 1981	LS Swap
Chevrolet	C10	Custom Deluxe	1975 - 1980	LS Swap
Chevrolet	C10	Custom	1975 - 1986	LS Swap
Chevrolet	C10	Deluxe	1981	LS Swap
Chevrolet	C10	Scottsdale	1975 - 1986	LS Swap
Chevrolet	C10	Silverado	1975 - 1986	LS Swap
Chevrolet	C20 Pickup	Base	1967 - 1972	LS Swap
Chevrolet	Camaro	Base	1970 - 1980	LS Swap
Chevrolet	Camaro	Berlinetta	1979 - 1981	LS Swap
Chevrolet	Camaro	LT Rally Sport	1976 - 1978	LS Swap
Chevrolet	Camaro	LT	1973 - 1978	LS Swap
Chevrolet	Camaro	RS	1970 - 1975	LS Swap
Chevrolet	Camaro	Rally Sport	1976 - 1980	LS Swap
Chevrolet	Camaro	SS	1970 - 1972	LS Swap
Chevrolet	Camaro	Sport	1981	LS Swap
Chevrolet	Camaro	Z28	1970 - 1981	LS Swap
Chevrolet	Chevelle	300 Deluxe	1967 - 1969	LS Swap
Chevrolet	Chevelle	300	1967 - 1968	LS Swap
Chevrolet	Chevelle	Base	1964 - 1972	LS Swap
Chevrolet	Chevelle	Concours Estate	1969 - 1972	LS Swap
Chevrolet	Chevelle	Concours	1967 - 1972	LS Swap
Chevrolet	Chevelle	Deluxe	1965 - 1967	LS Swap
Chevrolet	Chevelle	Greenbrier	1969 - 1972	LS Swap
Chevrolet	Chevelle	Malibu	1968 - 1972	LS Swap
Chevrolet	Chevelle	Nomad	1968 - 1972	LS Swap
Chevrolet	Chevelle	SS	1964 - 1972	LS Swap
Chevrolet	El Camino	Base	1964 - 1987	LS Swap
Chevrolet	El Camino	Conquista	1978 - 1986	LS Swap
Chevrolet	El Camino	Custom	1968 - 1972	LS Swap
Chevrolet	El Camino	Royal Knight	1979 - 1981	LS Swap
Chevrolet	El Camino	SS	1968 - 1987	LS Swap
Chevrolet	K10 Pickup	Base	1973 - 1974	LS Swap
Chevrolet	K10	Cheyenne	1975 - 1981	LS Swap
Chevrolet	K10	Custom Deluxe	1975 - 1980	LS Swap
Chevrolet	K10	Custom	1981 - 1986	LS Swap
Chevrolet	K10	Deluxe	1981	LS Swap
Chevrolet	K10	Scottsdale	1975 - 1986	LS Swap
Chevrolet	K10	Silverado	1975 - 1986	LS Swap
Chevrolet	K5 Blazer	Base	1976	LS Swap; 2-Wheel Drive
Chevrolet	K5 Blazer	Cheyenne	1975 - 1980	LS Swap; 2-Wheel Drive
Chevrolet	K5 Blazer	Custom Deluxe	1975 - 1980	LS Swap; 2-Wheel Drive
Chevrolet	K5 Blazer	Custom	1981 - 1982	LS Swap; 2-Wheel Drive
Chevrolet	K5 Blazer	Deluxe	1981	LS Swap; 2-Wheel Drive
Chevrolet	K5 Blazer	Silverado	1978 - 1982	LS Swap; 2-Wheel Drive
Chevrolet	Malibu	Base	1964 - 1981	LS Swap
Chevrolet	Malibu	Classic Estate	1978 - 1980	LS Swap
Chevrolet	Malibu	Classic Landau	1978 - 1981	LS Swap
Chevrolet	Malibu	Classic Sport	1979 - 1980	LS Swap
Chevrolet	Malibu	Classic	1978 - 1983	LS Swap
Chevrolet	Malibu	Estate	1979 - 1980	LS Swap
Chevrolet	Malibu	Landau	1979	LS Swap
Chevrolet	Malibu	Police	1979	LS Swap
Chevrolet	Malibu	Sport	1979 - 1980	LS Swap
Chevrolet	Monte Carlo	Base	1979 - 1988	LS Swap
Chevrolet	Monte Carlo	CL	1983	LS Swap
Chevrolet	Monte Carlo	LS	1986 - 1988	LS Swap
Chevrolet	Monte Carlo	Landau	1978 - 1981	LS Swap
Chevrolet	Monte Carlo	SS	1983 - 1988	LS Swap
Chevrolet	Monte Carlo	Sport	1978 - 1980	LS Swap
Chevrolet	V10	Custom Deluxe	1987	LS Swap
Chevrolet	V10	Scottsdale	1987	LS Swap
Chevrolet	V10	Silverado	1987	LS Swap
Ford	Mustang	Base	1979 - 2004	LS Swap
Ford	Mustang	Cobra	1981 - 1997	LS Swap
Ford	Mustang	Equipado	1998 - 2003	LS Swap
Ford	Mustang	GLX	1982 - 1983	LS Swap
Ford	Mustang	GL	1982 - 1983	LS Swap
Ford	Mustang	GT Base	2004	LS Swap
Ford	Mustang	GT Bullitt	2001	LS Swap
Ford	Mustang	GT Equipado	2004	LS Swap
Ford	Mustang	GT-350 20th Anniversary	1984	LS Swap
Ford	Mustang	GTS	1995	LS Swap
Ford	Mustang	GT	1982 - 2004	LS Swap
Ford	Mustang	Ghia	1979 - 1982	LS Swap
Ford	Mustang	High	1996 - 1997	LS Swap
Ford	Mustang	LX	1984 - 1993	LS Swap
Ford	Mustang	L	1982 - 1984	LS Swap
Ford	Mustang	Mach 1	2003 - 2004	LS Swap
Ford	Mustang	SVO	1984 - 1986	LS Swap
Ford	Mustang	SVT Cobra 10th Anniversary	2003	LS Swap
Ford	Mustang	SVT Cobra R	1993 - 2000	LS Swap
Ford	Mustang	SVT Cobra	1993 - 2004	LS Swap
Ford	Mustang	Semi-Equipado	1998	LS Swap
Ford	Mustang	Turbo GT	1983	LS Swap
GMC	C15/C1500 Pickup	Base	1967 - 1972	LS Swap
GMC	C25/C2500 Pickup	Base	1967 - 1972	LS Swap
GMC	Caballero	Amarillo	1981 - 1986	LS Swap
GMC	Caballero	Base	1978 - 1987	LS Swap
GMC	Caballero	Conquista	1981	LS Swap
GMC	Caballero	Diablo	1978 - 1987	LS Swap
GMC	Caballero	Laredo	1978 - 1980	LS Swap
GMC	Caballero	Royal Knight	1981	LS Swap
GMC	Jimmy	Base	1973 - 1982	LS Swap; 2-Wheel Drive Vehicles
GMC	Jimmy	High Sierra	1975 - 1982	LS Swap; 2-Wheel Drive Vehicles
GMC	Jimmy	Sierra Classic	1975 - 1982	LS Swap; 2-Wheel Drive Vehicles
GMC	Jimmy	Sierra Grande	1975 - 1982	LS Swap; 2-Wheel Drive Vehicles
GMC	Jimmy	Street Coupe	1978 - 1982	LS Swap; 2-Wheel Drive Vehicles
GMC	K15/K1500 Pickup	Base	1973 - 1974	LS Swap
GMC	K15	Base	1975 - 1978	LS Swap
GMC	K15	High Sierra	1975 - 1978	LS Swap
GMC	K15	Indy Hauler	1977	LS Swap
GMC	K15	Sierra Classic	1975 - 1978	LS Swap
GMC	K15	Sierra Grande	1975 - 1978	LS Swap
GMC	Sprint	Base	1971 - 1972	LS Swap
GMC	Sprint	Custom	1972	LS Swap
GMC	V1500	Base	1987	LS Swap
GMC	V1500	High Sierra	1987	LS Swap
GMC	V1500	Sierra Classic	1987	LS Swap
Jeep	CJ7	Base	1976 - 1986	LS Swap; With Advance Adapters Engine Mounts, T5 Transmission with Relocation Bracket, and 3" Body Lift
Jeep	CJ7	Golden Eagle	1977 - 1979	LS Swap; With Advance Adapters Engine Mounts, T5 Transmission with Relocation Bracket, and 3" Body Lift
Jeep	CJ7	Golden Hawk	1980	LS Swap; With Advance Adapters Engine Mounts, T5 Transmission with Relocation Bracket, and 3" Body Lift
Jeep	CJ7	Laredo	1980 - 1986	LS Swap; With Advance Adapters Engine Mounts, T5 Transmission with Relocation Bracket, and 3" Body Lift
Jeep	CJ7	Limited	1982 - 1984	LS Swap; With Advance Adapters Engine Mounts, T5 Transmission with Relocation Bracket, and 3" Body Lift
Jeep	CJ7	Renegade	1976 - 1986	LS Swap; With Advance Adapters Engine Mounts, T5 Transmission with Relocation Bracket, and 3" Body Lift
Jeep	CJ7	Renegado	1983 - 1984	LS Swap; With Advance Adapters Engine Mounts, T5 Transmission with Relocation Bracket, and 3" Body Lift
Jeep	Wrangler	Base	1987 - 1995	LS Swap
Jeep	Wrangler	Islander	1988 - 1992	LS Swap
Jeep	Wrangler	Laredo	1987 - 1990	LS Swap
Jeep	Wrangler	Renegade	1991 - 1994	LS Swap
Jeep	Wrangler	Rio Grande	1995	LS Swap
Jeep	Wrangler	SE	1994 - 1995	LS Swap
Jeep	Wrangler	S	1988 - 1994	LS Swap
Jeep	Wrangler	Sahara	1988 - 1995	LS Swap
Jeep	Wrangler	Sport	1987 - 1988	LS Swap
Oldsmobile	442	Base	1964 - 1971	LS Swap
Oldsmobile	Cutlass Calais	Base	1978 - 1988	LS Swap
Oldsmobile	Cutlass Calais	GT	1988	LS Swap
Oldsmobile	Cutlass Calais	Hurst	1983 - 1984	LS Swap
Oldsmobile	Cutlass Calais	International	1988	LS Swap
Oldsmobile	Cutlass Calais	SL	1988	LS Swap
Oldsmobile	Cutlass Ciera	Base	1982 - 1988	LS Swap
Oldsmobile	Cutlass Ciera	Brougham	1982 - 1988	LS Swap
Oldsmobile	Cutlass Ciera	Cruiser LS	1984 - 1985	LS Swap
Oldsmobile	Cutlass Ciera	Cruiser	1984 - 1985	LS Swap
Oldsmobile	Cutlass Ciera	ES	1983 - 1986	LS Swap
Oldsmobile	Cutlass Ciera	GT	1985 - 1987	LS Swap
Oldsmobile	Cutlass Ciera	Holiday	1985 - 1986	LS Swap
Oldsmobile	Cutlass Ciera	International	1988	LS Swap
Oldsmobile	Cutlass Ciera	LS	1982 - 1988	LS Swap
Oldsmobile	Cutlass Ciera	SL	1986 - 1988	LS Swap
Oldsmobile	Cutlass Ciera	S	1986 - 1988	LS Swap
Oldsmobile	Cutlass Cruiser	Base	1980 - 1983	LS Swap
Oldsmobile	Cutlass Cruiser	Brougham LS	1988	LS Swap
Oldsmobile	Cutlass Cruiser	Brougham	1980 - 1987	LS Swap
Oldsmobile	Cutlass Cruiser	LS	1987 - 1988	LS Swap
Oldsmobile	Cutlass Cruiser	SL	1988	LS Swap
Oldsmobile	Cutlass Salon	442	1978 - 1986	LS Swap
Oldsmobile	Cutlass Salon	Base	1978 - 1987	LS Swap
Oldsmobile	Cutlass Salon	Brougham	1978 - 1980	LS Swap
Oldsmobile	Cutlass Salon	Hurst	1979	LS Swap
Oldsmobile	Cutlass Supreme	442	1987	LS Swap
Oldsmobile	Cutlass Supreme	Base	1968 - 1988	LS Swap
Oldsmobile	Cutlass Supreme	Brougham	1978 - 1987	LS Swap
Oldsmobile	Cutlass Supreme	Classic Brougham	1988	LS Swap
Oldsmobile	Cutlass Supreme	Classic	1988	LS Swap
Oldsmobile	Cutlass Supreme	Indy 500 Pace Car	1988	LS Swap
Oldsmobile	Cutlass Supreme	International	1988	LS Swap
Oldsmobile	Cutlass Supreme	LS	1981 - 1985	LS Swap
Oldsmobile	Cutlass Supreme	SL	1988	LS Swap
Oldsmobile	Cutlass	Base	1964 - 1987	LS Swap
Oldsmobile	Cutlass	Brougham	1980 - 1981	LS Swap
Oldsmobile	Cutlass	Cruiser	1972	LS Swap
Oldsmobile	Cutlass	Eurosport	1987	LS Swap
Oldsmobile	Cutlass	Holiday	1964 - 1967	LS Swap
Oldsmobile	Cutlass	LS	1980 - 1981	LS Swap
Oldsmobile	Cutlass	Lujo	1987	LS Swap
Oldsmobile	Cutlass	S	1968 - 1972	LS Swap
Oldsmobile	Cutlass	Salon	1985 - 1987	LS Swap
Oldsmobile	Cutlass	Supreme	1981	LS Swap
Oldsmobile	Cutlass	Turnpike Cruiser	1967	LS Swap
Oldsmobile	Cutlass	Vista Cruiser Brougham	1979	LS Swap
Oldsmobile	Cutlass	Vista Cruiser	1978 - 1979	LS Swap
Oldsmobile	F85	Base	1964 - 1972	LS Swap
Oldsmobile	F85	Deluxe	1964 - 1966	LS Swap
Oldsmobile	F85	Holiday	1966	LS Swap
Oldsmobile	Vista Cruiser	Base	1964 - 1972	LS Swap
Oldsmobile	Vista Cruiser	Custom	1964 - 1967	LS Swap
Pontiac	Acadian	Base	1968 - 1971	LS Swap
Pontiac	Beaumont	Base	1964 - 1967	LS Swap
Pontiac	Bonneville	Base	1978 - 1987	LS Swap
Pontiac	Bonneville	Brougham	1978 - 1986	LS Swap
Pontiac	Bonneville	LE	1984 - 1988	LS Swap
Pontiac	Bonneville	SE	1988	LS Swap
Pontiac	Bonneville	SSE	1988	LS Swap
Pontiac	Bonneville	Safari	1978 - 1981	LS Swap
Pontiac	Firebird	Base	1970 - 1981	LS Swap
Pontiac	Firebird	Esprit	1970 - 1981	LS Swap
Pontiac	Firebird	Formula	1970 - 1981	LS Swap
Pontiac	Firebird	Trans Am	1970 - 1981	LS Swap
Pontiac	GTO	Base	1964 - 1972	LS Swap
Pontiac	GTO	The Judge	1970 - 1971	LS Swap
Pontiac	Grand Prix	Base	1978 - 1988	LS Swap
Pontiac	Grand Prix	Brougham	1981 - 1987	LS Swap
Pontiac	Grand Prix	LE	1984 - 1988	LS Swap
Pontiac	Grand Prix	LJ	1978 - 1983	LS Swap
Pontiac	Grand Prix	SE	1988	LS Swap
Pontiac	Grand Prix	SJ	1978 - 1980	LS Swap
Pontiac	LeMans	Aerocoupe YL	1988	LS Swap
Pontiac	LeMans	Aerocoupe	1988	LS Swap
Pontiac	LeMans	Base	1968 - 1988	LS Swap
Pontiac	LeMans	Luxury	1972	LS Swap
Pontiac	LeMans	SE	1988	LS Swap
Pontiac	LeMans	Safari	1969 - 1981	LS Swap
Pontiac	LeMans	Sport	1970 - 1972	LS Swap
Pontiac	LeMans	T37	1971	LS Swap
Pontiac	LeMans	Value Leader	1988	LS Swap
Pontiac	Tempest	Base	1964 - 1970	LS Swap
Pontiac	Tempest	Custom	1964 - 1969	LS Swap
Pontiac	Tempest	GT	1970	LS Swap
Pontiac	Tempest	Safari	1964 - 1969	LS Swap

Specifications:

Application	Multi-fit
Bolt Size	M8 x 1.25 x 25mm, M8 x 1.25 x 25mm
Choose Your Part	Manifold
Collector Diameter	2.25 inch
Emission Code	8
Engine	GM Small Block Gen III/IV (LS Based)
Exhaust Manifold Style	Standard Swap
Finish	Natural
Header Style	Manifold
Material	Cast Iron
Part Type	Exhaust Manifold
Primary Tube Dia.	1-3/4 inch
Product Type	Manifold
Proposition 65	www.P65Warnings.ca.gov
Subframe	Stock
Tube Material	Cast Iron
Type of Component	Manifold

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FlowTech LS Swap Exhaust Manifolds, Natural Cast Finish 11730FLT

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