Standard Duty HTC Coated Full-Length Headers 1970-79 Pontiac Firebird 326-455

Vehicle Info Needed

HEDMANPART NUMBER: 500-28156

Standard Duty HTC Coated Full-Length Headers 1970-79 Pontiac Firebird 326-455

Name: Standard Duty HTC Coated Full-Length Headers 1970-79 Pontiac Firebird 326-455
Brand: HEDMAN
SKU: 500-28156
Price: 724.99 USD
Availability: InStock

^$724⁹⁹

Ships on Sep 14, 2026

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^$298⁰⁰

555-300121

Metallic Ceramic Coated Long Tube Headers for 1964-1981 Pontiac Passenger Car [326-455 ci]

^$426⁹⁹

Pontiac Cars

1970-79 Pontiac Firebird 326-455
1-3/4" Tube, 3" Collector
Without smog injection or injection heads
Includes parts necessary to retain 49-state emission devices
Modification to stock exhaust required to retain catalytic converter
Some heads require drilling and tapping of end holes
Not legal for sale or use in California on pollution-controlled vehicles
EO#D167-27

Part TypeHeader

BrandHEDMAN

Package Height9.3

Package Width18.5

Package Length39.3

Weight29.9 PG

Part CategoryPerformance Parts

Carb Eo NumberD-167-26 (pdf)

Header FinishSilver ceramic coated

Tube DirectionDown Swept

QuantitySold as a pair

Bolts/Studs IncludedYes

Cylinder Head Port ShapeD-port

Transmission Mount IncludedNo

Header MaterialSteel

Gaskets IncludedYes

Weld-UpNo

Collector AttachmentBall and socket flange

Flange StyleStandard

TunedNo

Collector Diameter3 in (76.2 mm)

Motor Mounts IncludedNo

Part FitmentSemi Universal

Reducers IncludedYes

ApplicationAutomotive

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 Number28156

Package Qty1

Package TypeEA

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Please click here to download the instructions PDF file

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