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Standard Duty HTC Coated Full-Length Headers 1964-77 Chevy Passenger Car 396, 402, 454, 502
InfoVehicle Info Needed
HEDMANPART NUMBER: 500-66191

Standard Duty HTC Coated Full-Length Headers 1964-77 Chevy Passenger Car 396, 402, 454, 502

$69699
ShippingShips on Sep 07, 2026
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$17700
Metallic Ceramic Coated Long Tube Headers 1965-1974 Big Block Chevy Passenger Car (396-502 c.i.)

555-300101

Metallic Ceramic Coated Long Tube Headers 1965-1974 Big Block Chevy Passenger Car (396-502 c.i.)

$51999

GM Cars
    Standard Duty HTC Coated Full-Length Headers
  • 1964-77 Chevy Passenger Car 396, 402, 454, 502
  • 1-3/4" Tube, 3" Collector

  • For 396, 402, 454, and 502 engines (also 427 but only in Camaro)
  • Not recommended for use with aluminum heads
  • Will not fit 1967-69 Saginaw close ratio P/S with 825 power steering box
  • Due to cylinder heads (aluminum), Generation 6 BB-Chevy 502 will have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.
  • Includes parts necessary to retain 50-state emission devices
  • For 1964-74 vehicles with A.I.R. system (considered OE replacement when existing emission controls are not removed from vehicle)
  • EO#D167-27

    Applications
  • 1964-73 Chevrolet Chevelle
  • 1964-77 Chevrolet Malibu & El Camino
  • 1965-70 Chevrolet Bel Air, Biscayne, Impala
  • 1966-70 Chevrolet Caprice
  • 1967-69 Chevrolet Camaro
  • 1968 Chevrolet Chevy II
  • 1969-70 Chevrolet Brookwood & Townsman
  • 1969-74 Chevrolet Nova
Part TypeHeader
BrandHEDMAN
Package Height8.5
Package Width16.5
Package Length40.0
Weight31.2 PG
Part CategoryPerformance Parts
Carb Eo NumberD-167-26 (pdf)
Header FinishSilver ceramic coated
Tube DirectionDown Swept
QuantitySold as a pair
Bolts/Studs IncludedYes
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 Number66191
Package Qty1
Package TypeEA
No Questions
No Reviews
Please click here to download the instructions PDF file

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