Models with more than a 131.5" wheelbase must use a tailpipe extension kit to provide proper tailpipe exit. Tailpipe extensions will need to be fabricated or ordered from a local muffler shop.

All systems come without mufflers. Hooker recommends using the following mufflers with a 2.25" offset inlet/center outlet configuration:
Aero Chamber - 520-21501
Maximum Flow - 520-21601
Competition Turbo - 520-21005

Specifications:

Exit Position

Dual Split Side

Inlet Size (in.)

2.25

Material

Steel

Outlet Size (in.)

2.25

Exhaust Type

Dual

Exhaust Type

Manifold-Back

Exit Style

Straight

Tip Size

Tip Quantity

Exit Quantity

Two

System Finish

Aluminized

System Material

Steel

Inlet Quantity

Two

Quantity

Sold as a kit

Tailpipe Diameter (in.)

2.25

Intermediate Pipe Diameter (in.)

2.25

Hardware Included

Yes

Muffler Included

Exit Location

Split side

System Style

Manifold-back

Tip Included

Shipping Weight:

48.00

Package Height:

54.750

Package Width:

19.750

Package Depth:

9.000

Manufacturer's Part Number:

16622HKR

Hooker Headers Competition Dual Exhaust Kits are designed to fit specific applications using Hooker Competition Headers or stock exhaust manifolds. They have 2.25" diameter 16-gauge aluminized steel tubing that's mandrel bent to maintain a consistent inside diameter for maximum flow (press bending crushes the pipe, which can reduce volume by more than 10%).

Features

Reducer Flex-Tubes

Reduces Backpressure

Improves Engine Efficiency

Hardware and Instructions Included

Notes

The original equipment tailpipe exit location is retained on most systems unless otherwise noted below in More Info

For racing use only (not legal for use on vehicles originally equipped with catalytic converters)

Except the universal kit, systems do not include mufflers. Hooker recommends using Aero Chamber, Maximum Flow, or Competition Turbo mufflers with a 2.25" offset inlet/center outlet configuration.

Please Click here to download the Instructions PDF File

Does Hooker Headers 16622 fit your vehicle?

Narrow Results

Filter By
Year

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991

Filter By
Make

CHEVROLET GMC

Filter By
Model

Filter By
SubModel

BASE BIG TEN CHEYENNE CUSTOM CUSTOM DELUXE DELUXE HEAVY HALF HIGH SIERRA INDY HAULER SCOTTSDALE SIERRA SIERRA CLASSIC SIERRA GRANDE SIERRA SLE SIERRA SLX SILVERADO SLE STREET COUPE

Filter By
EngineType

V8 ( 5.0 L / 305 ) V8 ( 5.0 L / 307 ) V8 ( 5.7 L / 350 ) V8 ( 6.6 L / 400 )

Filter By
CC

5031 5736 5737

Filter By
Liter

5.0 5.7 6.6

Filter By
Aspiration

1978-1981 GMC C1500 PICKUP

Liter: 5.7
SubModel: SIERRA GRANDE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1975-1978 GMC C25 SUBURBAN

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1977-1980 GMC C1500 PICKUP

Liter: 5.0
SubModel: BASE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1978-1980 GMC C1500 PICKUP

Liter: 6.6
SubModel: SIERRA GRANDE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1987-1988 CHEVROLET R10 SUBURBAN

Liter: 5.7
SubModel: SCOTTSDALE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1976-1980 CHEVROLET C10 PICKUP

Liter: 6.6
SubModel: SCOTTSDALE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1975-1978 GMC C25/C2500 PICKUP

Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1973 GMC C1500 PICKUP

CC: 5736
Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979-1986 GMC C1500 SUBURBAN

Liter: 5.0
SubModel: BASE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1978-1981 GMC C1500 PICKUP

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1980 GMC C2500 SUBURBAN

Liter: 6.6
SubModel: SIERRA GRANDE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1979 CHEVROLET C20 SUBURBAN

CC: 5031
Liter: 5.0
SubModel: SILVERADO
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1975-1978 GMC JIMMY

Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1984-1986 CHEVROLET C20 SUBURBAN

Liter: 5.7
SubModel: SCOTTSDALE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1989-1991 CHEVROLET R2500 SUBURBAN

Liter: 5.7
SubModel: SCOTTSDALE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1977-1979 CHEVROLET C10 PICKUP

CC: 5031
Liter: 5.0
SubModel: SILVERADO
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1976-1978 GMC C25/C2500 PICKUP

Liter: 6.6
SubModel: HIGH SIERRA
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1982-1986 GMC C1500 PICKUP

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979-1981 GMC C1500 SUBURBAN

Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1987 GMC R1500 SUBURBAN

Liter: 5.0
SubModel: HIGH SIERRA
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1976 GMC C1500 PICKUP

Liter: 6.6
SubModel: HIGH SIERRA
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1977-1978 GMC C35/C3500 PICKUP

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979 GMC C2500 PICKUP

Liter: 6.6
SubModel: SIERRA GRANDE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1975-1977 CHEVROLET C20 SUBURBAN

Liter: 5.7
SubModel: SILVERADO
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979 GMC JIMMY

Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1975-1976 GMC C35/C3500 PICKUP

Liter: 5.7
SubModel: SIERRA GRANDE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1977-1978 GMC C25 SUBURBAN

Liter: 5.0
SubModel: SIERRA GRANDE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1980 CHEVROLET C20 SUBURBAN

Liter: 5.0
SubModel: SILVERADO
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1989-1991 CHEVROLET R2500 SUBURBAN

Liter: 5.7
SubModel: SILVERADO
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1981 CHEVROLET C10 PICKUP

CC: 5031
Liter: 5.0
SubModel: CHEYENNE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1975-1977 CHEVROLET C10 SUBURBAN

Liter: 5.7
SubModel: CUSTOM DELUXE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978-1979 GMC JIMMY

Liter: 6.6
SubModel: STREET COUPE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1977-1978 GMC C25/C2500 PICKUP

Liter: 5.0
SubModel: SIERRA GRANDE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1975-1976 GMC C35/C3500 PICKUP

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1975-1976 GMC C35/C3500 PICKUP

Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1975-1977 GMC C1500 PICKUP

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978-1980 CHEVROLET C10 PICKUP

Liter: 5.7
SubModel: SCOTTSDALE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1973 GMC C25/C2500 PICKUP

CC: 5031
Liter: 5.0
SubModel: BASE
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1987 GMC R1500 SUBURBAN

Liter: 5.0
SubModel: SIERRA CLASSIC
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1978 GMC C25 SUBURBAN

Liter: 6.6
SubModel: SIERRA CLASSIC
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1987 GMC R2500 PICKUP

Liter: 5.0
SubModel: HIGH SIERRA
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1982 GMC C1500 PICKUP

Liter: 5.7
SubModel: STREET COUPE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1981-1984 CHEVROLET BLAZER K5

CC: 5031
Liter: 5.0
SubModel: SILVERADO
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1977-1978 GMC C35/C3500 PICKUP

Liter: 6.6
SubModel: SIERRA CLASSIC
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1979 GMC C2500 SUBURBAN

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978-1979 CHEVROLET C30 PICKUP

CC: 5031
Liter: 5.0
SubModel: CUSTOM DELUXE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1987-1989 GMC R3500 PICKUP

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1987 GMC R1500 PICKUP

Liter: 5.0
SubModel: SIERRA CLASSIC
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1990-1991 CHEVROLET R3500 PICKUP

Liter: 5.7
SubModel: CHEYENNE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979-1986 GMC C3500 PICKUP

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1980 CHEVROLET C20 PICKUP

Liter: 5.0
SubModel: CHEYENNE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1981-1986 GMC C2500 SUBURBAN

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978 GMC C25 SUBURBAN

Liter: 6.6
SubModel: SIERRA GRANDE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1988-1991 CHEVROLET C3500 PICKUP

Liter: 5.7
SubModel: SILVERADO
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1981-1986 CHEVROLET C20 PICKUP

CC: 5031
Liter: 5.0
SubModel: SILVERADO
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1978 CHEVROLET C30 PICKUP

Liter: 5.7
SubModel: CUSTOM DELUXE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1975-1977 GMC C15 SUBURBAN

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1976-1979 CHEVROLET C30 PICKUP

Liter: 6.6
SubModel: SILVERADO
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1982-1986 CHEVROLET C10 PICKUP

Liter: 5.7
SubModel: SILVERADO
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978 GMC C15 SUBURBAN

Liter: 5.7
SubModel: SIERRA GRANDE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1981 CHEVROLET C10 SUBURBAN

EngineType: ALL
SubModel: DELUXE

1987 GMC R1500 SUBURBAN

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1987 GMC R2500 SUBURBAN

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979 GMC C2500 PICKUP

Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1978-1982 GMC JIMMY

Liter: 5.0
SubModel: STREET COUPE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1976 GMC C35/C3500 PICKUP

Liter: 6.6
SubModel: SIERRA CLASSIC
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1975-1976 GMC C35/C3500 PICKUP

Liter: 5.7
SubModel: HIGH SIERRA
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1974 GMC C35/C3500 PICKUP

CC: 5737
Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1987-1988 CHEVROLET R20 SUBURBAN

Liter: 5.7
SubModel: SCOTTSDALE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1982 GMC C1500 PICKUP

Liter: 5.7
SubModel: SIERRA GRANDE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1973-1974 CHEVROLET C20 SUBURBAN

Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978-1980 CHEVROLET C10 PICKUP

Liter: 5.7
SubModel: SILVERADO
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1989 CHEVROLET R3500 PICKUP

Liter: 5.7
SubModel: CHEYENNE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1977-1978 GMC C35/C3500 PICKUP

Liter: 5.7
SubModel: SIERRA GRANDE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1976 GMC C1500 PICKUP

Liter: 6.6
SubModel: SIERRA GRANDE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1982-1986 GMC C2500 SUBURBAN

Liter: 5.0
SubModel: BASE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1979 GMC C2500 SUBURBAN

Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1973 GMC C25/C2500 PICKUP

CC: 5736
Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1973 CHEVROLET BLAZER

Liter: 5.0
SubModel: BASE
CUI: 307
EngineType: V8 ( 5.0 L / 307 )

1975-1977 CHEVROLET C10 PICKUP

Liter: 5.7
SubModel: CHEYENNE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978-1980 GMC C1500 PICKUP

Liter: 6.6
SubModel: STREET COUPE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1987-1988 CHEVROLET R10 SUBURBAN

Liter: 5.7
SubModel: SILVERADO
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1982-1986 GMC C2500 SUBURBAN

Liter: 5.0
SubModel: SIERRA CLASSIC
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1977-1979 CHEVROLET C20 PICKUP

CC: 5031
Liter: 5.0
SubModel: CHEYENNE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1979-1986 GMC C2500 PICKUP

Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979-1980 CHEVROLET BLAZER K5

Liter: 5.7
SubModel: CHEYENNE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1982-1986 GMC C1500 SUBURBAN

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1973 CHEVROLET C30 PICKUP

CC: 5736
Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978-1981 GMC C1500 PICKUP

Liter: 5.7
SubModel: STREET COUPE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979-1986 CHEVROLET C30 PICKUP

Liter: 5.7
SubModel: SILVERADO
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1987 CHEVROLET R10 SUBURBAN

CC: 5031
Liter: 5.0
SubModel: SCOTTSDALE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1982-1986 CHEVROLET C10 SUBURBAN

Liter: 5.7
SubModel: SILVERADO
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1978-1980 CHEVROLET C10 PICKUP

Liter: 5.7
SubModel: CHEYENNE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979-1986 GMC C3500 PICKUP

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979 CHEVROLET BLAZER K5

CC: 5031
Liter: 5.0
SubModel: CHEYENNE
CUI: 305
EngineType: V8 ( 5.0 L / 305 )

1987-1991 GMC R1500 SUBURBAN

Liter: 5.7
SubModel: BASE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1975-1981 CHEVROLET C20 PICKUP

Liter: 5.7
SubModel: CHEYENNE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1980 GMC C2500 SUBURBAN

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1979-1980 CHEVROLET C30 PICKUP

Liter: 5.7
SubModel: CUSTOM DELUXE
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1975-1977 GMC C15 SUBURBAN

Liter: 5.7
SubModel: SIERRA CLASSIC
CUI: 350
EngineType: V8 ( 5.7 L / 350 )

1 2 ... 5 >

Items You Need

Hooker Headers 21501 - Aero Chamber Mufflers 2.250" Inlet

Only $80.60

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Hooker Headers 21601 - Max Flow Mufflers Inlet: 2.250"

Only $80.59

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Hooker Headers 21005 - Competition Turbo Muffler 2.25" Inlet/Outlet

Only $42.39

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Hooker Headers 16622

Competition Exhaust System Manifold Back

Part Number: 520-16622