Hooker Super Competition Long Tube Headers – Ceramic Coated HOK-21121HKR

Hooker Super Competition Long Tube Headers – Ceramic Coated HOK-21121HKR

1955-1957 Chevy: 265-400 Tube 1.75″ O.D. x 30″, Collector Size 3″ O.D., Collector Length 10″, Port Shape: Square Port, For Cars Lowered up to 4″

Features:

Tuned-length primary tubes for maximum exhaust scavenging and velocity
Industry’s best welds for durability
Designed for optimal performance
Long transition collector for decreased back pressure
5/16” machined flanges for a perfect seal
Light weight & sturdy 18 gauge tubing
All necessary hardware included for a complete installation
Mandrel-bent tubing for smooth exhaust flow

With Hooker Super Competition the objective has always been to make the maximum horsepower and to put it at the optimum point in the power curve. It takes a lot of time and money to do the job right. We will sometimes spend up to 2 to 3 times more just to make the Super Competition header work only 5 to 10% better. That commitment to excellence has made Hooker Headers the winningest header manufacturer in automotive drag racing history.

Attributes:

part type	Exhaust Header
Bolt size	3/8-16 x 3/4
Brand	Hooker
CARB (California) Compliant	No
Category	Exhaust
Collector Diameter	3.00 inch
Emission Code	3
Engine	Chevrolet Small Block Gen I
Header Finish	Silver Ceramic
Header Style	Long Tube
Primary Tube Dia.	1-3/4 inch
Product Type	Headers
Sub Category	Exhaust Manifolds
Tube Material	Mild Steel

Vehicle Applications:

Make	Model	Years
Chevrolet	Bel Air	1955 to 1957
Chevrolet	Del Ray	1957 to 1957
Chevrolet	One-Fifty Series	1955 to 1957
Chevrolet	Sedan Delivery	1955 to 1957
Chevrolet	Two-Ten Series	1955 to 1957