Long Tube Headers for 78-88 GM G Body 265-400 SBC 1-3/4in Primary D336-B
Long Tube Headers for 78-88 GM G Body 265-400 SBC 1-3/4in Primary D336-B is backordered and will ship as soon as it is back in stock.
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Fitment
Fitment
Warranty Information
Warranty Information
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Description
Description
Overview:
78-88 GM G Body SBC Long Tube Black Ctd
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.
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
Specs:
- Brand: Doug's Headers
- Collector Attachment: 3-Bolt Flange
- Collector Diameter: 3.0 IN
- Collector Port Diameter: 3.0 IN
- Color: Black
- Cylinder Head Port Shape: Oval
- Design: Full-length
- EGT Port: No
- Finish: Hi-Temp Black Coating
- Flange Thickness: 0.375 IN
- Gasket Or Seal Included: Yes
- Gaskets Included: Yes
- Grade Type: Performance
- Header Material: Steel
- Header Style: Full-length
- Material: Steel
- Mounting Hardware Included: Yes
- Port Shape: Oval
- Primary Tube Outside Diameter: 1.75 IN
- Primary Tubing Diameter: 1.75 IN
- Prop 65 (C, R or CR): CR
- Prop 65 Yes/No: Yes
- Sheen Level: Matte
- Title: Doug's Long Tube Header 78-88 GM G Body 265-400 SBC 1 3/4" Primary 3" Collector Black Hi Temp Coated D336-B
- Tube Wall Thickness: 16 GU
- Part Number: D336-B
Applications:
- 1978-1987 Chevrolet El Camino 305 CID
- 1978-1984 Chevrolet El Camino 350 CID
- 1979-1982 Chevrolet El Camino 267 CID
- 1978-1983 Chevrolet Malibu 305 CID
- 1978-1983 Chevrolet Malibu 350 CID
- 1979-1982 Chevrolet Malibu 267 CID
- 1978-1988 Chevrolet Monte Carlo 305 CID
- 1979-1982 Chevrolet Monte Carlo 267 CID
- 1982-1984 Chevrolet Monte Carlo 350 CID
- 1978-1980 Oldsmobile Cutlass 305 CID
- 1978-1979 Oldsmobile Cutlass 350 CID
- 1983-1986 Pontiac Bonneville 305 CID
- 1978-1987 Pontiac Grand Prix 305 CID
Emissions:
- This Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.
Instructions:
Fitment Notes:
- Fits most angle plug heads.
- Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 and ZZ6 engines.
- Requires removal or modification of locking steering columns if equipped.
- Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
- Fits Factory Installed Chevrolet 265-350 small block engines.
Payment & Security
Payment methods
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