Product Summary

Long Tube Header Tube Type, Round Exhaust Port Shape

  • Natural stainless-steel finish offers superior resistance to rust and corrosion
  • 3/8" thick 304 stainless machine flanges to prevent warping
  • CNC 304 stainless mandrel bent tubes for an accurate fit and improved flow
  • Precision formed long transition collectors and long tube design reduce backpressure and increase higher RPM horsepower
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Key Specs

MFG. Part #D320-SS
Header Tube TypeLong Tube
Exhaust Port ShapeRound
Flange StyleStandard
Primary Tube Diameter2"
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Need To Know

Quick and Easy Returns

Return Policy

Doug's Headers D320-SS Details

Features & Benefits

  • Natural stainless-steel finish offers superior resistance to rust and corrosion
  • 3/8" thick 304 stainless machine flanges to prevent warping
  • CNC 304 stainless mandrel bent tubes for an accurate fit and improved flow
  • Precision formed long transition collectors and long tube design reduce backpressure and increase higher RPM horsepower

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.

For the enthusiast who demands the best, Doug's Headers are not just components; they're a statement of excellence, a commitment to leading-edge performance, and a nod to the glory days of muscle cars and drag racing. Join the ranks of champions. Experience the unmatched quality and performance of Doug's Headers today.


Manufacturer Specs:

Finish 304 Stainless Steel
Material 304 Stainless Steel
Design Full-length
Primary Tubing Diameter 2.0 Inches
Collector Port Diameter 3.5 Inches
Port Shape Round
Tube Wall Thickness 16 Gauge
Flange Thickness 0.375 Inches
Collector Attachment 3-Bolt Flange
Oxygen Sensor Port No
Gasket Or Seal Included Yes
Mounting Hardware Included Yes
Grade Type Performance
Color Silver
Sheen Level Satin

 

Manufacturer Listed Applications & Notes

 

Year / Make / Model 1968 Chevrolet Chevy II
Engine Type V8
Engine Size(s) Cubic Inches: 396
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1967-1969 Chevrolet Camaro
Engine Type V8
Engine Size(s) Cubic Inches: 396
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1969 Chevrolet Camaro
Engine Type V8
Engine Size(s) Cubic Inches: 427
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1969-1974 Chevrolet Nova
Engine Type V8
Notes
  • For use with 396-502 Big Block Chevrolet Engine Swap
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1969-1970 Chevrolet Nova
Engine Type V8
Engine Size(s) Cubic Inches: 396
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1970-1972 Chevrolet Nova
Engine Type V8
Engine Size(s) Cubic Inches: 402
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1970-1971 Chevrolet Nova
Engine Type V8
Engine Size(s) Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1967-1969 Pontiac Firebird
Engine Type V8
Notes
  • For use with 396-502 Big Block Chevrolet Engine Swap
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Specs

Applications

 
Year / Make / Model 1968 Chevrolet Chevy II
Engine Type V8
Engine Size(s) Cubic Inches: 396
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1967-1969 Chevrolet Camaro
Engine Type V8
Engine Size(s) Cubic Inches: 396
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1969 Chevrolet Camaro
Engine Type V8
Engine Size(s) Cubic Inches: 427
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1969-1974 Chevrolet Nova
Engine Type V8
Notes
  • For use with 396-502 Big Block Chevrolet Engine Swap
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1969-1970 Chevrolet Nova
Engine Type V8
Engine Size(s) Cubic Inches: 396
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1970-1972 Chevrolet Nova
Engine Type V8
Engine Size(s) Cubic Inches: 402
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1970-1971 Chevrolet Nova
Engine Type V8
Engine Size(s) Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Year / Make / Model 1967-1969 Pontiac Firebird
Engine Type V8
Notes
  • For use with 396-502 Big Block Chevrolet Engine Swap
  • Big block frame stands and motor mounts required for proper fit.
  • Will fit with Saginaw Close Ratio 800 Series Steering Box.

Warranty Information

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All Doug's headers and exhaust products are guaranteed, to the original purchaser, to be free of defects in materials and workmanship for one year. This warranty covers the replacement or repair of the product only and does not cover the cost of removal and installation, customer applied aftermarket coatings or any other discoloration or corrosion of finished surfaces. Damage or product failure resulting from collision,improper installation, off-road use, road hazards, the use of exhaust insulting wrap or like products or rust occurring after installation, is not covered by the warranty. Should a part become defective it should be returned to the original selling retailer and must be accompanied with the original sales receipt. If there is no retailer in your area, call the factory for a return authorization and return your part prepaid to the factory for inspection. PerTronix reserves the right to replace or repair the alleged defective part and return the part freight collect.

Doug's Headers D320-SS Specifications

KEY SPECS
MFG. Part #D320-SS
BrandDoug's Headers
Header Tube TypeLong Tube
Exhaust Port ShapeRound
Flange StyleStandard
Primary Tube Diameter2"
Material TypeStainless Steel
ColorSilver
Weld-UpNo
Collector Diameter3-1/2 Inch
FinishSatin
Hardware IncludedYes
Gasket(s) IncludedYes
GENERAL
Sold in QuantityPair
GTIN Code694342557089
Primary Tube Gauge16-gauge

Questions & Answers

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