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Doug's Headers 1967-74 Chevy F-Body/Nova Small Block without A/C 1 7/8" Long Tube Header D323

Doug's Headers 1967-74 Chevy F-Body/Nova Small Block without A/C 1 7/8" Long Tube Header D323
Doug's Headers 1967-74 Chevy F-Body/Nova Small Block without A/C 1 7/8" Long Tube Header D323Doug's Headers 1967-74 Chevy F-Body/Nova Small Block without A/C 1 7/8" Long Tube Header D323
from $1,562.99 st

Available Options

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Model: 5124715
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Long tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market. This fitment is tailored for popular aftermarket engine swap kits. Doug's engine swap headers were developed to solve common fitment issues in tight spaces, making your swap process smoother. No more guesswork or modifications needed - just straightforward installations that save you time and frustration.
Features:
  • 3/8" Thick machined flanges to prevent warping
  • Precision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower
  • Heavy duty 16-gauge tubing for long life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating
About Doug's Headers

Doug's Headers are a fixture in the motorsports aftermarket, pioneering quality muscle car performance headers for decades. Unlike the competition, Doug's Headers prides ourselves on superior design detail resulting in a hassle-free installation for any application.

Downloads:

Download Name File Size
D323.pdf349.63KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years Engine Fitment Notes
Chevrolet Camaro 1967 4.9L / 302 / V8
5.7L / 350 / V8
5.3L / 327 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-69 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1968 4.9L / 302 / V8
5.7L / 350 / V8
5.4L / 327 / V8
5.3L / 327 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-69 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1969 4.9L / 302 / V8
5.7L / 350 / V8
5.0L / 307 / V8
5.4L / 327 / V8
5.3L / 327 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-69 Camaro Emission Vehicles in 50 States
Not Legal for use on 1969 Camaro Emission Vehicles in 50 States
Chevrolet Chevy II 1968 5.7L / 350 / V8
5.4L / 327 / V8
5.3L / 327 / V8
5.0L / 307 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Not Legal for use on 1968 Chevy II Emission Vehicles in 50 States
Chevrolet Nova 1969 5.0L / 307 / V8
5.7L / 350 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Not Legal for use on 69-73 Nova Emission Vehicles in 50 States
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1970 5.0L / 307 / V8
5.7L / 350 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Not Legal for use on 69-73 Nova Emission Vehicles in 50 States
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1971 5.0L / 307 / V8
5.7L / 350 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Not Legal for use on 69-73 Nova Emission Vehicles in 50 States
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1972 5.0L / 307 / V8
5.7L / 350 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Not Legal for use on 69-73 Nova Emission Vehicles in 50 States
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1973 5.0L / 307 / V8
5.7L / 350 / V8		 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Not Legal for use on 69-73 Nova Emission Vehicles in 50 States
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1974 5.7L / 350 / V8 Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Pontiac Firebird 1967 6.6L / 400 / V8
5.3L / 326 / V8		 For use with 265-400 Small Block Chevrolet Engine Swap
Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1968 6.6L / 400 / V8
5.7L / 350 / V8		 For use with 265-400 Small Block Chevrolet Engine Swap
Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1969 6.6L / 400 / V8
5.7L / 350 / V8		 For use with 265-400 Small Block Chevrolet Engine Swap
Fits most angle plug heads
Full-length
Hi-Temp Black Coating
without Air Conditioning
Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States

Specifications:

Collector Attachment 3-Bolt Flange
Collector Diameter 3.5 IN
Collector Port Diameter 3.5 IN
Cylinder Head Port Shape Rectangular
Design Full-length
Flange Thickness 0.375 IN
Gasket Or Seal Included Yes
Gaskets Included Yes
Grade Type Performance
Header Style Full-length
Mounting Hardware Included Yes
Oxygen Sensor Port No
Part Type Exhaust Header
Port Shape Rectangular
Primary Tube Outside Diameter 1.875 IN
Proposition 65 www.P65Warnings.ca.gov
Tube Wall Thickness 16 GU
Warranty Time 24 Months

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