Description

1967-1974 Chevy/GMC 4WD truck, 1/2-3/4-1-Ton, 1967-1974 4WD Blazer/Jimmy K5/Suburban: 283-400, Tube Size 1.625″, Collector Size 2.5″Fuel Economy From The EngineLeak Test For Max PerformanceMandrel-Formed Power PlenumLeakproof O-Ringed Port SealsInclude All Mounting HardwareConstructed of .049 cold roll flash mild steel tubingPrecision engineered for fit, performance and economy

Air Injection Tubes:No

Bolt size:3/8-16 x 3/4 IN

Bolts Included: Yes

Catalytic Converter Quantity: 0

Collector Attachment: 3-Bolt Flange

Collector Diameter: 2.50″

Collector Port Diameter: 2.50″

Collector Reducer Included:Yes

Collector Reducer Outlet Diameter:2.50 IN

Color: Black

Design: Long Tube

Drive: 4WD

EGT Port: No

Engine: Chevrolet Small Block Gen I

Finish: Painted

Flange Thickness: 0.3125″

Flange Thickness:5/16 IN

Gasket Or Seal Included: Yes

Grade Type: Performance

Header Series:Flowtech

Header Style: Long Tube

Material: Mild Steel

Mounting Hardware Included: Yes

Oxygen Sensor Port: No

Port Shape: Oval

Primary Tubing Diameter: 1.625 Inch

Primary Tubing Diameter:1 5/8 IN

Quantity: Sold as a Pair

Sheen Level: Satin

Tube Wall Thickness: 18 GU