Product Summary

Oval Exhaust Port Shape, Standard Flange Style, Black

  • Tight Tubes Street Rod Headers
  • SB Chevrolet 283-400
  • 1-5/8 In. Tube Diameter, 2-1/2 In. Collector- Black-Maxx Satin Black Ceramic-Metallic Coated Mild Steel
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Key Specs

MFG. Part #63303
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeMild Steel
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Need To Know

Made to Order

This custom item will ship when completed

Quick and Easy Returns

Return Policy

Hedman Hedders 63303 Details

Hedman Hedders has been manufacturing quality headers in the USA since 1954, and classic musclecars is their specialty. 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 you to bolt up, even if it is not perfectly aligned with the header collectors.

Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.

Features

  • Tight Tubes Street Rod Headers
  • SB Chevrolet 283-400
  • 1-5/8 In. Tube Diameter, 2-1/2 In. Collector- Black-Maxx Satin Black Ceramic-Metallic Coated Mild Steel

Application

  • 1955-1957 Chevrolet Bel Air CID 265
  • 1957 Chevrolet Bel Air CID 283
  • 1955-1957 Chevrolet One-Fifty Series CID 265
  • 1957 Chevrolet One-Fifty Series CID 283
  • 1955-1957 Chevrolet Two-Ten Series CID 265
  • 1957 Chevrolet Two-Ten Series CID 283
  • 1923-1947 STREET ROD CID 283
  • 1923-1947 STREET ROD CID 305
  • 1923-1947 STREET ROD CID 350
  • 1923-1947 STREET ROD CID 400

Specs

Manufacturer Specs:

TUBE DIAMETER1-5/8 in.
TUBE STYLETight Tubes
AIR CONDITIONINGYes
AUTOMATIC TRANSMISSION - COLUMNYes
AUTOMATIC TRANSMISSION - FLOORYes
MANUAL TRANSMISSION - COLUMNYes
MANUAL TRANSMISSION - FLOORYes
POWER STEERINGYes
COLLECTOR ATTACHMENT2-1/2 in.
COLLECTOR DIAMETER2-1/2 in.
COLLECTOR SIZE2-1/2 in.
COLLECTOR STYLE3-Bolt Gasket Style Flange
REDUCER OUTLET SIZE2 in.
EXHAUST SYSTEM DIA2 in.
CONTENTSHeader(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions
ENGINEChevy SB 283-400
FINISHBLACK MAXX Satin Black Ceramic-Metallic
FINISH TYPEBLACK MAXX- Black Ceramic-Metallic Coating
FLANGE STYLEStandard
FLANGE THICKNESS0.3125 in.
HEADER STYLETIGHT TUBES
NOTES55-57 Chevrolet Passenger Cars 283-400 Tight Tube
MATERIALMild Steel
TUBE DESIGNStandard
TUBE LENGTHTight Tubes
TUBE MATERIAL THICKNESS16g
TUBE SIZE1-5/8 in.
WITH AIR SYSTEMNo
WITH EGRNo
EONo
WELD-UPNo
TUNEDNo
BOLTS/STUDS INCLUDEDYes
CATALYTIC CONVERTERS INCLUDEDNo
CROSSOVER PIPE INCLUDEDNo
GASKET OR SEAL INCLUDEDYes
HEADER FASTENERS INCLUDEDYes
INSTALLATION HARDWARE INCLUDEDYes
MOTOR MOUNTS INCLUDEDNo
MOUNTING HARDWARE INCLUDEDYes
REDUCERS INCLUDEDYes
Y-PIPE INCLUDEDNo
QUANTITYSold as a pair.
PRIMARY TUBE GAUGE16g
PRIMARY TUBE DIAMETER IN1.625 in.
PACKAGE CONTENTSHeaders, reducers (exhaust adapters), gaskets, mounting hardware
HEADER MATERIALMild Steel
HEADER FINISHBLACK MAXX Satin Black Ceramic-Metallic
CYLINDER HEAD PORT SHAPEOval
CYLINDER HEADStock Profile Heads
HEADER CONSTRUCTIONMILD STEEL- Standard-Duty
REPLACEMENT GASKET41827530
REPLACEMENT HEAD FLANGE GASKET41827530
HEADER PORT SHAPEOval Port
PORT SHAPEOval
COLLECTOR BOLTS INCLUDEDYes

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Hedman Hedders 63303 Specifications

KEY SPECS
MFG. Part #63303
BrandHedman Hedders
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeMild Steel
ColorBlack
Weld-UpNo
Collector Diameter2-1/2 Inch
FinishSatin
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedYes
Collector Reducer Exit Diameter2"
GENERAL
Sold in QuantitySet
Collector Length2.5"
Flange Thickness0.3125"
TunedNo
Crossover Pipe IncludedNo
Primary Tube Gauge16-gauge

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