855.444.6872 Contact Us Mon-Sat 10a-6p
DRIVEN BY CARE
Home

Doug's Headers 1973-88 Chevy/GMC Square Body Truck 1 7/8" Mid-Length LS Engine Swap Header D314

Doug's Headers 1973-88 Chevy/GMC Square Body Truck 1 7/8" Mid-Length LS Engine Swap Header D314
Doug's Headers 1973-88 Chevy/GMC Square Body Truck 1 7/8" Mid-Length LS Engine Swap Header D314
from $1,584.23 st

Available Options

*
Model: 5124706
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
SELECT
OPTIONS
STORE PICKUP
[More Info]
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
D314.pdf263.78KB
D314-B.pdf263.78KB

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 Fitment Notes
Chevrolet C10 Pickup 1973 - 1974 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
Chevrolet C10 1975 - 1986 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
Chevrolet C20 Pickup 1973 - 1974 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
Chevrolet C20 1975 - 1987 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
Chevrolet R10 1987 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
Chevrolet R20 1987 - 1988 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
Chevrolet V10 1987 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
Chevrolet V20 1987 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC C15/C1500 Pickup 1973 - 1974 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC C1500 1979 - 1986 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC C15 1975 - 1978 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC C25/C2500 Pickup 1973 - 1974 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC C2500 1979 - 1986 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC C25 1975 - 1978 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC R1500 1987 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC R2500 1987 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC V1500 1987 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length
GMC V2500 1987 For use with Chevrolet LS Engine Swap
Check motor mount position before ordering.
O2 bungs are welded on both collectors.
Requires Doug's LS adapter kit part number SK-100.
LS1 style oil pan required for proper fit.
Includes O2 sensor extension harness.
Will not fit manual transmission cars with factory Z bar clutch linkage.
Uses 3" V band collectors with clamps provided.
This long tube header has excellent ground clearance with collector above the bottom of the frame rails.
Mid Length

Specifications:

Collector Attachment V-Band
Collector Diameter 3.0 IN
Collector Port Diameter 3.0 IN
Cylinder Head Port Shape Round
Design Mid Length
Flange Thickness 0.375 IN
Gasket Or Seal Included Yes
Gaskets Included Yes
Grade Type Performance
Header Style Mid 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

Reviews:

Write a Review
* Your Name:
* Email (This will not be displayed)
* Rating:
Comments:

Ask a question about

Doug's Headers 1973-88 Chevy/GMC Square Body Truck 1 7/8" Mid-Length LS Engine Swap Header D314:
Reason for Inquiry:

Related Products

Doug's Headers Premium Header Gasket Ford Pair 4.6-5.4L 4V (not GT500) Oval Port HG9646
Doug's Headers Premium Header Gasket Ford Pair 4.6-5.4L 4V (not GT500) Oval Port HG9646
Model: 5124601
Condition: NEW
$87.99 pr
Doug's Headers Premium Header Gasket Olds Pair 350-455 Rectangle Port HG9355
Doug's Headers Premium Header Gasket Olds Pair 350-455 Rectangle Port HG9355
Model: 5124597
Condition: NEW
$83.99 pr
Doug's Headers Motor Mount Adapter Plate Kit for LS1/LS6 GM engines into 73-87 C10 Chevy Trucks SK101
Doug's Headers Motor Mount Adapter Plate Kit for LS1/LS6 GM engines into 73-87 C10 Chevy Trucks SK101
Model: 5124605
Condition: NEW
$280.99 kt
Doug's Headers Transmission Crossmember 63-72 C-10 4.8-6.2L LS Engine Swap Mild Steel, Black SKC102
Doug's Headers Transmission Crossmember 63-72 C-10 4.8-6.2L LS Engine Swap Mild Steel, Black SKC102
Model: 5124633
Condition: NEW
$483.99 ea
Doug's Headers Premium Header Gasket Chrysler Pair 5.7-6.4L Gen III Hemi D- Port HG9692
Doug's Headers Premium Header Gasket Chrysler Pair 5.7-6.4L Gen III Hemi D- Port HG9692
Model: 5124602
Condition: NEW
$83.99 pr