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FlowtechPart 31530FLT✓ Fits 62 vehiclesMade in CN
Product Details
⚙️
Vehicle Fitment & Compatibility
62 applicationsCompatible Engines
7.4L V8 454ci6.5L V8 396ci6.6L V8 402ci
Application Notes
with Silver Ceramic Finish1-3/4 inch Tube Diameter, Ceramic Coated, Standard Header, Primary Tube Coll. Size 1.75x3 in. w/o A.I.R. Tubes, Modify Stock Exh. To Retain Cat. Converter, Not Legal For Street Use
View all 62 vehicle applications
Years
Make / Model
Submodel
Engine
1973–1974
Chevrolet Blazer
7.4L V8 454ci
1968–1969
Chevrolet C10 Pickup
6.5L V8 396ci
1970–1972
Chevrolet C10 Pickup
6.6L V8 402ci
1973–1974
Chevrolet C10 Pickup
7.4L V8 454ci
1968–1969
Chevrolet C10 Suburban
6.5L V8 396ci
1970–1972
Chevrolet C10 Suburban
6.6L V8 402ci
1973–1974
Chevrolet C10 Suburban
7.4L V8 454ci
1968–1969
Chevrolet C20 Pickup
6.5L V8 396ci
1970–1972
Chevrolet C20 Pickup
6.6L V8 402ci
1973–1974
Chevrolet C20 Pickup
7.4L V8 454ci
1968–1969
Chevrolet C20 Suburban
6.5L V8 396ci
1970–1972
Chevrolet C20 Suburban
6.6L V8 402ci
1973–1974
Chevrolet C20 Suburban
7.4L V8 454ci
1968–1969
Chevrolet C30 Pickup
6.5L V8 396ci
1970–1972
Chevrolet C30 Pickup
6.6L V8 402ci
1973–1974
Chevrolet C30 Pickup
7.4L V8 454ci
1968–1969
Chevrolet K10 Pickup
6.5L V8 396ci
1970–1972
Chevrolet K10 Pickup
6.6L V8 402ci
1973–1974
Chevrolet K10 Pickup
7.4L V8 454ci
1968–1969
Chevrolet K10 Suburban
6.5L V8 396ci
1970–1972
Chevrolet K10 Suburban
6.6L V8 402ci
1973–1974
Chevrolet K10 Suburban
7.4L V8 454ci
1968–1969
Chevrolet K20 Pickup
6.5L V8 396ci
1970–1972
Chevrolet K20 Pickup
6.6L V8 402ci
1973–1974
Chevrolet K20 Pickup
7.4L V8 454ci
1968–1969
Chevrolet K20 Suburban
6.5L V8 396ci
1970–1972
Chevrolet K20 Suburban
6.6L V8 402ci
1973–1974
Chevrolet K20 Suburban
7.4L V8 454ci
1968–1969
Chevrolet K30 Pickup
6.5L V8 396ci
1970–1972
Chevrolet K30 Pickup
6.6L V8 402ci
1973–1974
Chevrolet K30 Pickup
7.4L V8 454ci
1968–1969
GMC C15/C1500 Pickup
6.5L V8 396ci
1970–1972
GMC C15/C1500 Pickup
6.6L V8 402ci
1973–1974
GMC C15/C1500 Pickup
7.4L V8 454ci
1968–1969
GMC C15/C1500 Suburban
6.5L V8 396ci
1970–1972
GMC C15/C1500 Suburban
6.6L V8 402ci
1973–1974
GMC C15/C1500 Suburban
7.4L V8 454ci
1968–1969
GMC C25/C2500 Pickup
6.5L V8 396ci
1970–1972
GMC C25/C2500 Pickup
6.6L V8 402ci
1973–1974
GMC C25/C2500 Pickup
7.4L V8 454ci
1968–1969
GMC C25/C2500 Suburban
6.5L V8 396ci
1970–1972
GMC C25/C2500 Suburban
6.6L V8 402ci
1973–1974
GMC C25/C2500 Suburban
7.4L V8 454ci
1968–1969
GMC C35/C3500 Pickup
6.5L V8 396ci
1970–1972
GMC C35/C3500 Pickup
6.6L V8 402ci
1973–1974
GMC C35/C3500 Pickup
7.4L V8 454ci
1973–1974
GMC Jimmy
7.4L V8 454ci
1968–1969
GMC K15/K1500 Pickup
6.5L V8 396ci
1970–1972
GMC K15/K1500 Pickup
6.6L V8 402ci
1973–1974
GMC K15/K1500 Pickup
7.4L V8 454ci
1968–1969
GMC K15/K1500 Suburban
6.5L V8 396ci
1970–1972
GMC K15/K1500 Suburban
6.6L V8 402ci
1973–1974
GMC K15/K1500 Suburban
7.4L V8 454ci
1968–1969
GMC K25/K2500 Pickup
6.5L V8 396ci
1970–1972
GMC K25/K2500 Pickup
6.6L V8 402ci
1973–1974
GMC K25/K2500 Pickup
7.4L V8 454ci
1968–1969
GMC K25/K2500 Suburban
6.5L V8 396ci
1970–1972
GMC K25/K2500 Suburban
6.6L V8 402ci
1973–1974
GMC K25/K2500 Suburban
7.4L V8 454ci
1968–1969
GMC K35/K3500 Pickup
6.5L V8 396ci
1970–1972
GMC K35/K3500 Pickup
6.6L V8 402ci
1973–1974
GMC K35/K3500 Pickup
7.4L V8 454ci
No applications match your search.
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Key Features
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast
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.
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.
- 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
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About this product
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.
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Product Specifications
Air Injection Tubes
No
Automotive Item Grade
Performance
Bolt Size
3/8-16 x 3/4
Bolts Included
No
Brand
Flowtech Exhaust
California Proposition 65 Chemical Name
1
California Proposition 65 Required
Yes
California Proposition 65
Yes
CARB (California) Compliant
No
Category
Exhaust
Collector Attachment
3-Bolt Flange
Collector Diameter
3.00
Collector Reducer Included
Yes
Collector Reducer Outlet Diameter
2.50
Color
Silver
Design
Long Tube
Drive
4WD
EGT Port
No
Emission Code
4
Finish
Ceramic Coated
Flange Thickness
0.3125
Flange Thickness
0.375
Flange Thickness
3/8
Flange Thickness
5/16
Gasket Or Seal Included
Yes
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
Primary Tubing Diameter
1.75
Product Type
Headers
Prop 65 Yes/No
Yes
Quantity
Sold as a pair
Sub Category
Exhaust Manifolds
Tube Wall Thickness
16
Warning
California Proposition 65
🛡️
Warranty & Compliance
Warranty
Manufacturer's Limited 90 Day Warranty
Country of Origin
CN
⚠ Prop 65 Warning
Yes
1
Emissions Code
4
HS Code
8708925000
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Dimensions & Shipping
Product Dimensions
38.1 × 18.2 × 11.0 in
Shipping Dimensions
38.1 × 18.2 × 11.0 in
Weight
13948 g (13.95 kg)