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Doug's Headers 1975-81 GM F-Body LS Engine Swap 1 7/8" Long Tube Header D3351

Doug's Headers 1975-81 GM F-Body LS Engine Swap 1 7/8" Long Tube Header D3351
from $1,573.99 st

Available Options

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Model: 5124779
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.

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 1975 5.7L / 350 / V8 For use with Chevrolet LS Engine Swap.
Use with Doug's LS Engine Motor and Transmission mounts.
Full-length
Chevrolet Camaro 1976 5.0L / 305 / V8
5.7L / 350 / V8		 For use with Chevrolet LS Engine Swap.
Use with Doug's LS Engine Motor and Transmission mounts.
Full-length
Chevrolet Camaro 1977 5.0L / 305 / V8
5.7L / 350 / V8		 For use with Chevrolet LS Engine Swap.
Use with Doug's LS Engine Motor and Transmission mounts.
Full-length
Chevrolet Camaro 1978 5.0L / 305 / V8
5.7L / 350 / V8		 For use with Chevrolet LS Engine Swap.
Use with Doug's LS Engine Motor and Transmission mounts.
Full-length
Chevrolet Camaro 1979 5.0L / 305 / V8
5.7L / 350 / V8		 For use with Chevrolet LS Engine Swap.
Use with Doug's LS Engine Motor and Transmission mounts.
Full-length
Chevrolet Camaro 1980 5.0L / 305 / V8
4.4L / 267 / V8
5.7L / 350 / V8		 For use with Chevrolet LS Engine Swap.
Use with Doug's LS Engine Motor and Transmission mounts.
Full-length
Chevrolet Camaro 1981 5.0L / 305 / V8
4.4L / 267 / V8
5.7L / 350 / V8		 For use with Chevrolet LS Engine Swap.
Use with Doug's LS Engine Motor and Transmission mounts.
Full-length
Pontiac Firebird 1975 7.5L / 455 / V8
5.7L / 350 / V8
6.6L / 400 / V8		 Use with Doug's LS Engine Motor and Transmission mounts.
For use with Chevrolet LS Engine Swap.
Full-length
Pontiac Firebird 1976 7.5L / 455 / V8
5.7L / 350 / V8
6.6L / 400 / V8		 Use with Doug's LS Engine Motor and Transmission mounts.
For use with Chevrolet LS Engine Swap.
Full-length
Pontiac Firebird 1977 5.0L / 305 / V8
5.7L / 350 / V8
6.6L / 400 / V8
4.9L / 301 / V8
6.6L / 403 / V8		 Use with Doug's LS Engine Motor and Transmission mounts.
For use with Chevrolet LS Engine Swap.
Full-length
Pontiac Firebird 1978 6.6L / 400 / V8
6.6L / 403 / V8
5.0L / 305 / V8
5.7L / 350 / V8		 Use with Doug's LS Engine Motor and Transmission mounts.
For use with Chevrolet LS Engine Swap.
Full-length
Pontiac Firebird 1979 6.6L / 400 / V8
6.6L / 403 / V8
5.0L / 305 / V8
5.7L / 350 / V8
4.9L / 301 / V8		 Use with Doug's LS Engine Motor and Transmission mounts.
For use with Chevrolet LS Engine Swap.
Full-length
Pontiac Firebird 1980 4.3L / 265 / V8
5.0L / 305 / V8
4.9L / 301 / V8		 Use with Doug's LS Engine Motor and Transmission mounts.
For use with Chevrolet LS Engine Swap.
Full-length
Pontiac Firebird 1981 5.0L / 305 / V8
4.4L / 267 / V8
4.3L / 265 / V8
4.9L / 301 / V8		 Use with Doug's LS Engine Motor and Transmission mounts.
For use with Chevrolet LS Engine Swap.
Full-length

Specifications:

Collector Attachment V-Band
Collector Diameter 3.0 IN
Collector Port Diameter 3.0 IN
Cylinder Head Port Shape Round
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 Yes
Part Type Exhaust Header
Port Shape Round
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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