Skip to product information
Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16" flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.
Flowtech Long Tube Header - Black Paint - 11500FLT
$249.95
Features:
- Fuel Economy From The Engine
- Leak Test For Max Performance
- Mandrel-Formed Power Plenum
- Leakproof O-Ringed Port Seals
- Include All Mounting Hardware
- Construced of .049 cold roll flash mild steel tubing
- Precision engineered for fit, performance and economy
- Works with factory power steering and power brakes
Product Specifications:
- Product Details: 1966-1974 Chevy/GMC 1/2 & 3/4 & 1-Ton 2WD & 4WD, 1967-1974 Blazer/Jimmy 2WD, 1966-1972 Blazer/Jimmy K5/Suburban 4WD, 1973-1974 Blazer/Jimmy K5/Suburban 2WD & 4WD: 283-400, Tube Size 1.5", Collector Size 3"
- Air Injection Tubes: No
- Bolt Size: 3/8-16 x 3/4 IN
- Bolts Included: Yes
- California Proposition 65: Yes
- CARB (California) Compliant: No
- Catalytic Converter Quantity: 0
- Collector Attachment: 3-Bolt Flange
- Collector Diameter: 3.00 IN
- Collector Port Diameter: 3.00 IN
- Collector Reducer Included: Yes
- Collector Reducer Outlet Dia.: 2.50 IN
- Color: Black
- Design: Long Tube
- Drive: 2WD, 4WD
- EGT Port: No
- Engine: Chevrolet Small Block Gen I
- Finish: Painted
- Flange Thickness: 0.3125 IN, 5/16 IN
- Gasket Or Seal Included: Yes
- Grade Type: Performance
- Header Series: Flowtech I
- Header Style: Long Tube
- Material: Mild Steel
- Mounting Hardware Included: Yes
- Oxygen Sensor Port: No
- Part Type: Exhaust Header
- Port Shape: Oval
- Primary Tubing Diameter: 1 1/2 IN, 1.50 IN
- Product Type: Headers
- Quantity: Sold as a Pair
- Sheen Level: Satin
- Tube Wall Thickness: 18 GU
Installation Notes:
Requires Flowtech air conditioning bracket 10042FLT. May require clutch linkage modification. Does not fit angle-plug heads. Do not use header wraps; they can cause header tube cracking from excessive heat or rust from moisture build-up and void the warranty. Breaking in an engine with ceramic-coated headers can damage the coating and void the warranty. Use cast-iron exhaust manifolds or old headers during engine break-in to prevent coating damage. Ceramic-coated headers require several heat cycles to fully cure before withstanding extreme heat. Please call Flowtech Technical Service at 270-781-9741 for additional information regarding ceramic-coated exhaust products.