Description

Hooker Competition Long Tube Headers – Ceramic CoatedLong Tube Headers for 1969-1974 Blazer/Jimmy/Yukon/Tahoe 2DR. (4WD), 1969-1974 1/2, 3/4 1 Ton Truck (4WD): 396-502ci engines, 1.75″ Primary Tube diameter x 31″, 3.0″ Collector, 8″ Collector Length, Header Port Shape: Same As Engine PortHooker Competition headers offer the best value in the high performance header market. Designed for the value-conscious buyer, Hooker Competition headers offer premium features at a very competitive price. Made of durable 16 gauge mild steel tubing, the Hooker Competition header design utilizes a long transition collector to reduce back pressure and increase exhaust flow. A perfect sealing surface is assured with the 5/16″ machined flanges, with welded O-ring seals. Experience has proven that this flange size is ideal to maintain header integrity and be pliable enough to seal each exhaust port. Tubing is mandrel-bent to maintain metal strength and provide consistent tube diameter at radii to maximize performance. Hooker Competition headers have a standard finish that features a heat-cured, high-heat-resistant paint. Optionally, the famous Hooker Ceramic Thermal Barrier Coating is available.

Air Injection Tubes:No

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

Bolts Included: Yes

Collector Attachment: 3-Bolt Flange

Collector Diameter: 3.00″

Collector Reducer Included:Yes

Collector Reducer Outlet Diameter:2.50 IN

Color: Silver

Design: Long Tube

Drive: 4WD

EGT Port: No

Engine: GM Big Block

Finish: Ceramic Coated

Flange Thickness: 3/8″

Gasket Or Seal Included: Yes

Grade Type: Performance

Header Series:Competition

Header Style: Long Tube

Material: Mild Steel

Mounting Hardware Included: Yes

Oxygen Sensor Port: No

Port Shape: Square

Primary Tubing Diameter: 1.75 Inch

Primary Tubing Diameter:1 3/4 IN

Quantity: Sold as a Pair

Tube Wall Thickness: 16 GU