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 and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces underhood temps for increased performance.
Flowtech Long Tube Header - Ceramic Coated - 31530FLT
$519.95
Features:
- Fuel Economy From The Engine
- Leak Test For Max Performance
- Ceramic Headers
- Rust And Corrosion Resistance
- Mandrel-Formed Power Plenum
- Leakproof O-Ringed Port Seals
- Include All Mounting Hardware
Product Specifications:
- Product Details: 1968-1974 Chevy/GMC, 2WD 1/2, 3/4 & 1-Ton Trucks/Blazer/Jimmy, 1973-1974 2WD Suburban, 1968-1974 1/2 & 3/4 Ton 4WD Trucks, 1973-1974 4WD Blazer/Jimmy K5/Suburban: 396-454, Tube Size 1.75", Collector Size 3". Automatic transmission only.
- Air Injection Tubes: No
- Bolt Size: 3/8-16 x 3/4 IN
- Bolts Included: No
- California Proposition 65: Yes
- CARB (California) Compliant: No
- Collector Attachment: 3-Bolt Flange
- Collector Diameter: 3.00 IN
- Collector Reducer Included: Yes
- Collector Reducer Outlet Dia.: 2.50 IN
- Color: Silver
- Design: Long Tube
- Drive: 4WD
- EGT Port: No
- Engine: GM Big Block
- Finish: Ceramic Coated
- Flange Thickness: 0.3125 IN, 0.375 IN, 3/8 IN, 5/16 IN
- Gasket Or Seal Included: Yes
- Grade Type: Performance
- Header Series: Flowtech II - Full Length
- Header Style: Long Tube
- Material: Mild Steel
- Mounting Hardware Included: Yes
- Oxygen Sensor Port: No
- Part Type: Exhaust Header
- Port Shape: Round
- Primary Tubing Diameter: 1 3/4 IN, 1.75 IN
- Product Type: Headers
- Quantity: Sold as a Pair
- Tube Wall Thickness: 16 GU
Installation Notes:
Does not fit manual transmissions. 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.