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Vehicle Info NeededDOUG'S HEADERSPART NUMBER: 776-D369-SS
D369-SS Stainless Steel Long-Tube Headers, 1964-1975 Small Block Chevy 265-400, 1-3/4 in. Tube Diameter
$1,01713
Ships on 09/15/2026
Lowest Price GuaranteeSmall Block Chevy - 1-3/4'' Tube Diameter
Stainless Steel Long-Tube Headers1964-1975 Small Block Chevy 265-400 1-3/4'' Tube Diameter 3'' Collector SAP Port Shape
Fits:
Fits:
- 1964-1975 Chevelle
- 1964-1975 El Camino
Notes:
- Fits D-Port cylinder heads including ZZ4 crate engines.
- Will fit most angle plug heads including factoy Chevrolet 'Bow-Tie' heads.
- Requires removal or modification of locking steering columns if equipped.
Emission Code:
- The product accompanying this document is legal only for off-highway use(except in California or states that have adopted California emission standards), racing use or for use on pre-emission-controlled motor vehicles/motor vehicle engines (pre-1974 domestic vehicles certified to California standards, pre-1974domestic vehicles certified to federal standards and all pre-1974 foreign vehicles), per the manufacturer's application guide.
| Automatic | Manual | |||||
| A/C | P/B | P/S | Column | Floor | Column | Floor |
| N | Y | Y | Y | Y | Y | Y |
Every Doug's Header is Tuned with the Proper Tube Size & Length to Efficiently Remove Exhaust Gasses from Each Cylinder
Headers feature 3/8'' flanges and 16-gauge tubing on passenger car applications. They include all necessary mounting hardware, collector reducers or connection pipes, premium gaskets and detailed instructions. Headers are available in either a Metallic Ceramic Thermal Barrier Coating or a uncoated raw finish. The Metallic Ceramic Thermal Barrier Coating will withstand up to 1400 degree temperatures! This coating is polished which increases corrosion resistance over 60%!
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Features:
- Thick Flanges Prevent Warping
- Stitch Welded Ports for Added Strength
- Machined Sealing Bead Eliminates Leaks
- Heavy Gauge Tubing for Longer Life
- Precision-Formed Collectors Reduce Back Pressure
- CNC Mandrel-Bent Tubing Provides Accurate Fit & Better Flow
See More Info for Applications Listing
Part TypeHeader
Product LineDoug's Headers for GM Passenger Cars
BrandDOUG'S HEADERS
Package Height11.0
Package Width21.0
Package Length39.0
Weight43.0 PG
Part CategoryPerformance Parts
PositionN/A
Header FinishNatural
QuantitySold as a pair
Bolts/Studs IncludedYes
Cylinder Head Port ShapeSAP
Transmission Mount IncludedNo
Header Material304 Stainless Steel
Gaskets IncludedYes
Weld-UpNo
Brake SystemPower
Collector Attachment3-bolt flange
Flange StyleStandard
TunedNo
Collector Diameter3 in (76.2 mm)
Motor Mounts IncludedNo
Part FitmentSemi Universal
Reducers IncludedYes
Primary Tube Gauge18-gauge
Header StyleFull-length
Cross Over Pipe IncludedNo
Catalytic Converter(S) IncludedNo
Primary Tube Diameter1.75 in (44.5 mm)
Vendor Part NumberD369-SS
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
