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Doug's Headers D336-B Full Length Header, 1-3/4 In, 78-88 GM, Blk

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#447D336B

Doug's Headers D336-B Full Length Header, 1-3/4 In, 78-88 GM, Blk

Name: Doug's Headers D336-B Full Length Header, 1-3/4 In, 78-88 GM, Blk
Brand: Doug's Headers
SKU: 447D336B
Price: 776.35 USD
Availability: InStock

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$776.35

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$853.99

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Product Summary

Long Tube Header Tube Type, Oval Exhaust Port Shape

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Key Specs

MFG. Part #	D336-B
Header Tube Type	Long Tube
Exhaust Port Shape	Oval
Flange Style	Standard
Primary Tube Diameter	1-3/4"

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Need To Know

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855.313.9176

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Doug's Headers D336-B Details

3/8" Thick machined flanges...no warping
CNC mandrel bent tubes... accurate fit & better flow
Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
Heavy 16 gauge tubing...longer life
Tubes are pre-polished to remove scratches and the header isfinished with a Hi-Temp Black Coating

D336-B 1 3/4" 4-Tube Ful Length Header Chevrolet 78-83 Malibu 78-87 El Camin 78-88 Monte Carlo Oldsmobile 78-88 Cutlass Supreme 78-84 Calais 78-83 Cruiser Pontiac 78-87 Grand Prix Bonnevill 82-86 265-400 Chevrolet Engine Hi-Temp Blk Coating
Black
Emissions: No air inj
Primary: 1 3/4"
Fits D-Port heads incl. ZZ4 crate eng
use left side AC bracket H7608
vehicles W/ short compressors can use stock bracket
Use non-shell motor mounts
removal/modification of locking steering column reqd.
with Floor Shifter
with A/C

D336-B 1 3/4" 4-Tube Ful Length Header Chevrolet 78-83 Malibu 78-87 El Camin 78-88 Monte Carlo Oldsmobile 78-88 Cutlass Supreme 78-84 Calais 78-83 Cruiser Pontiac 78-87 Grand Prix Bonnevill 82-86 265-400 Chevrolet Engine Hi-Temp Blk Coating
Black
Emissions: No air inj
Primary: 1 3/4"
Fits D-Port heads incl. ZZ4 crate eng
use left side AC bracket H7608
vehicles W/ short compressors can use stock bracket
Use non-shell motor mounts
removal/modification of locking steering column reqd.
with Floor Shifter
with A/C

Application

1979-1982 Chevrolet El Camino 4.4L/267 V8
1978-1984 Chevrolet El Camino 5.7L/350 V8
1978-1987 Chevrolet El Camino 5L/305 V8
1979-1982 Chevrolet Malibu 4.4L/267 V8
1978-1983 Chevrolet Malibu 5.7L/350 V8
1978-1983 Chevrolet Malibu 5L/305 V8
1979-1982 Chevrolet Monte Carlo 4.4L/267 V8
1982-1984 Chevrolet Monte Carlo 5.7L/350 V8
1978-1988 Chevrolet Monte Carlo 5L/305 V8
1978-1981 Oldsmobile Cutlass 5.7L/350 V8
1978-1987 Oldsmobile Cutlass 5L/305 V8
1982-1984 Pontiac Bonneville 5.7L/350 V8
1983-1986 Pontiac Bonneville 5L/305 V8
1980-1981 Pontiac Grand Prix 4.3L/265 V8
1978-1980 Pontiac Grand Prix 4.9L/301 V8
1981-1984 Pontiac Grand Prix 5.7L/350 V8
1978-1987 Pontiac Grand Prix 5L/305 V8

Rebates

Aeromotive & PerTronix Black Friday 10% Off Sale

Black Friday Savings Are Here! From November 1 2026 through November 30 2026, save 10% on all Aeromotive and PerTronix products, including top performance brands like Doug's Headers, Taylor Cable, and JBA Performance Exhaust. Whether you're upgrading your fuel system, ignition components, headers, spark plug wires, or exhaust setup, this limited-time offer makes it easy to get premium performance parts at a great price. No coupon required, just shop qualifying Aeromotive and PerTronix brands and enjoy instant savings all month long.

Guides & Documents

Headers Installation Instructions (447D336B)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Doug's Headers D336-B Specifications

KEY SPECS
MFG. Part #	D336-B
Brand	Doug's Headers
Header Tube Type	Long Tube
Exhaust Port Shape	Oval
Flange Style	Standard
Primary Tube Diameter	1-3/4"
Material Type	Steel
Color	Black
Weld-Up	No
Collector Diameter	3 Inch
Finish	Hi-Temp Black
Hardware Included	Yes
Gasket(s) Included	Yes

GENERAL
Sold in Quantity	Pair
GTIN Code	694342543860

Ratings & Reviews

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Fitment

1976-1982 Chevy C10

Gen 1 LG3 Small Block Chevy

1983 Chevy C10

2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1984 Chevy C10

Gen 1 LG3 Small Block Chevy

1985 Chevy C10

2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1986 Chevy C10

Gen 1 LG3 Small Block Chevy

1976-1982 Chevy C10 Suburban

Gen 1 LG3 Small Block Chevy

1983 Chevy C10 Suburban

2-Piece Rear Main Chevy 350

1985 Chevy C10 Suburban

2-Piece Rear Main Chevy 350

1977-1982 Chevy C20

Gen 1 LG3 Small Block Chevy

1976-1978 Chevy C20 Suburban

Gen 1 LG3 Small Block Chevy

1978-1979 Chevy C30

Gen 1 LG3 Small Block Chevy

1976-1979 Chevy Camaro

Gen 1 LG3 Small Block Chevy

1980-1981 Chevy Camaro

2-Piece Rear Main Chevy 267
Gen 1 LG3 Small Block Chevy

1982 Chevy Camaro

Gen 1 LG3 Small Block Chevy

1977 Chevy Caprice

Gen 1 LG3 Small Block Chevy

1980-1982 Chevy Caprice

2-Piece Rear Main Chevy 267

1983 Chevy Caprice

2-Piece Rear Main Chevy 350

1985 Chevy Caprice

2-Piece Rear Main Chevy 350

1980 Chevy Corvette

Gen 1 LG3 Small Block Chevy

1985 Chevy Corvette

2-Piece Rear Main Chevy 350

1976-1977 Chevy El Camino

Gen 1 LG3 Small Block Chevy

1978 Chevy El Camino

2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1979 Chevy El Camino

2-Piece Rear Main Chevy 267
2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1980-1982 Chevy El Camino

2-Piece Rear Main Chevy 267
Gen 1 LG3 Small Block Chevy

1983 Chevy El Camino

2-Piece Rear Main Chevy 350

1977-1982 Chevy G10

Gen 1 LG3 Small Block Chevy

1970 Chevy G10 Van

2-Piece Rear Main Chevy 350

1977-1982 Chevy G20

Gen 1 LG3 Small Block Chevy

1978-1979 Chevy G30

Gen 1 LG3 Small Block Chevy

1982 Chevy G30

Gen 1 LG3 Small Block Chevy

1970 Chevy G30 Van

2-Piece Rear Main Chevy 350

1977-1979 Chevy Impala

Gen 1 LG3 Small Block Chevy

1980-1982 Chevy Impala

2-Piece Rear Main Chevy 267
Gen 1 LG3 Small Block Chevy

1983 Chevy Impala

2-Piece Rear Main Chevy 350

1985 Chevy Impala

2-Piece Rear Main Chevy 350

1977-1979 Chevy K10

Gen 1 LG3 Small Block Chevy

1981-1982 Chevy K10

Gen 1 LG3 Small Block Chevy

1976-1982 Chevy K10 Suburban

Gen 1 LG3 Small Block Chevy

1977-1978 Chevy K20

Gen 1 LG3 Small Block Chevy

1980 Chevy K20

Gen 1 LG3 Small Block Chevy

1977-1978 Chevy K20 Suburban

Gen 1 LG3 Small Block Chevy

1970-1974 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1977-1981 Chevy K5 Blazer

Gen 1 LG3 Small Block Chevy

1983 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1985 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1976 Chevy Laguna

2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1976-1978 Chevy Malibu

Gen 1 LG3 Small Block Chevy

1979-1982 Chevy Malibu

2-Piece Rear Main Chevy 267
Gen 1 LG3 Small Block Chevy

1970-1971 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1973-1975 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1976-1977 Chevy Monte Carlo

Gen 1 LG3 Small Block Chevy

1979-1981 Chevy Monte Carlo

2-Piece Rear Main Chevy 267

1982 Chevy Monte Carlo

2-Piece Rear Main Chevy 267
2-Piece Rear Main Chevy 350

1983 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1976-1979 Chevy Monza

Gen 1 LG3 Small Block Chevy

1975 Chevy Nova

2-Piece Rear Main Chevy 350

1976-1979 Chevy Nova

Gen 1 LG3 Small Block Chevy

1980-1983 Chevy P30

2-Piece Rear Main Chevy 350

1985 Chevy P30

2-Piece Rear Main Chevy 350

1970 Chevy P30 Van

2-Piece Rear Main Chevy 350

1967 GMC C15/C1500 Suburban

2-Piece Rear Main Chevy 350

1980-1984 GMC C1500

2-Piece Rear Main Chevy 350

1980-1986 GMC C1500 Suburban

2-Piece Rear Main Chevy 350

1978-1987 GMC Caballero

2-Piece Rear Main Chevy 350

1975-1978 GMC G15

2-Piece Rear Main Chevy 350

1967-1974 GMC G15/G1500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G1500

2-Piece Rear Main Chevy 350

1975-1978 GMC G25

2-Piece Rear Main Chevy 350

1967-1974 GMC G25/G2500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G2500

2-Piece Rear Main Chevy 350

1975-1978 GMC G35

2-Piece Rear Main Chevy 350

1967 GMC G35/G3500 Van

2-Piece Rear Main Chevy 350

1970-1974 GMC G35/G3500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G3500

2-Piece Rear Main Chevy 350

1974-1977 GMC Jimmy

2-Piece Rear Main Chevy 350

1983-1984 GMC Jimmy

2-Piece Rear Main Chevy 350

1979-1984 GMC K1500

2-Piece Rear Main Chevy 350

1979-1984 GMC K2500

2-Piece Rear Main Chevy 350