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Standard Duty HTC Coated Full-Length Headers 1967-91 GM C/K/R/V Series Truck/SUV 396-454
InfoVehicle Info Needed
HEDMANPART NUMBER: 500-66111

Standard Duty HTC Coated Full-Length Headers 1967-91 GM C/K/R/V Series Truck/SUV 396-454

$63099
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$13100
Metallic Ceramic Coated Long Tube Headers 1968-1987 Big Block Chevy Truck/SUV (396-502 c.i.)

555-300112

Metallic Ceramic Coated Long Tube Headers 1968-1987 Big Block Chevy Truck/SUV (396-502 c.i.)

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GM Trucks
    Standard Duty HTC Coated Full-Length Headers
  • 1967-91 GM C/K/R/V Series Truck/SUV 396-454
  • 1-3/4" Tube, 3" Collector

  • With A.I.R. system
  • Must use factory BB-Chevy hardware & mounts
  • Must use 1975-Later clutch linkage located at rear of engine
  • Includes parts necessary to retain emission devices (50-state legal for 1975-81 only)
  • Modification to stock exhaust required to retain catalytic converter
  • For 1964-74 vehicles with A.I.R. system (considered OE replacement when existing emission controls are not removed from vehicle)
  • EO#D167-27

Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Pontiac models for decades. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your vehicle's exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

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These headers have a high temperature POLISHED-SILVER ceramic finish that resists corrosion, and can withstand temperatures up to 1400 degree F. Each set includes a pair of header gaskets, header flange bolts and collector bolts. No collector gasket is needed. Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.

Made in the USA

Features:

  • Coating offers protection up to 1400°.
  • Won't chip, peel, or "blue" like chrome.
  • Superior heat insulation.
  • Increased exhaust velocity for more power.

NOTE: Installing coated headers on an engine during the break-in period will cause discoloration. The use of factory manifolds or an old set of headers is recommended while breaking in an engine.

Part TypeHeader
Product LineHedman HTC Hi-Tech Coated Headers
BrandHEDMAN
Package Height9.5
Package Width22.5
Package Length37.0
Weight32.2 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 Number66111
Package Qty1
Package TypeEA

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Standard Duty Uncoated Full Length Headers for 1967-91 Chevy/GMC Truck/SUV 2WD/4WD 396-502

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Some parts are not legal for use in California or other states with similar laws / regulations
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