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

HTC Coated Headers
1-5/8 In. Tube Dia.
3 In. Coll.
Full Length Design

Application

1979 American Motors AMX CID 304
1972-1975 American Motors Gremlin CID 304
1972-1976 American Motors Hornet CID 304
1972-1974 American Motors Hornet CID 360
1970-1974 American Motors Javelin CID 304
1970-1974 American Motors Javelin CID 360
1971-1974 American Motors Javelin AMX CID 304
1971-1974 American Motors Javelin AMX CID 360
1971-1974 American Motors Javelin AMX CID 401
1974-1976 American Motors Matador CID 304
1974-1976 American Motors Matador CID 360
1974-1976 American Motors Matador CID 401

Specs

Manufacturer Specs:

TUBE DIAMETER	1-5/8 in.
TUBE STYLE	Long Tubes
AIR CONDITIONING	Yes
AUTOMATIC TRANSMISSION - COLUMN	Yes
AUTOMATIC TRANSMISSION - FLOOR	Yes
MANUAL TRANSMISSION - COLUMN	No
MANUAL TRANSMISSION - FLOOR	Yes
POWER STEERING	Yes
COLLECTOR ATTACHMENT	3 in.
COLLECTOR DIAMETER	3 in.
COLLECTOR SIZE	3 in.
COLLECTOR STYLE	BALL and SOCKET Style (Gasketless)
REDUCER OUTLET SIZE	2-1/2 in.
EXHAUST SYSTEM DIA	2-1/2 in.
CONTENTS	Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware
FINISH	HTC Polished Silver Ceramic-Metallic
FINISH TYPE	HTC SILVER (polished) Ceramic-metallic Coating
FLANGE STYLE	Standard
FLANGE THICKNESS	0.3125 in.
HEADER STYLE	Long Tube
NOTES	1968-80 Various AMC Cars 290-401. Please see VEHICLE APPLICATIONS below.
MATERIAL	Mild Steel
TUBE DESIGN	Standard
TUBE LENGTH	Long Tubes
TUBE MATERIAL THICKNESS	16g
TUBE SIZE	1-5/8 in.
WITH AIR SYSTEM	No
WITH EGR	No
EO	No
WELD-UP	No
TUNED	No
CATALYTIC CONVERTERS INCLUDED	No
CROSSOVER PIPE INCLUDED	No
GASKET OR SEAL INCLUDED	Yes
HEADER FASTENERS INCLUDED	Yes
INSTALLATION HARDWARE INCLUDED	Yes
MOUNTING HARDWARE INCLUDED	Yes
REDUCERS INCLUDED	Yes
Y-PIPE INCLUDED	No
QUANTITY	Sold as a pair.
PRIMARY TUBE GAUGE	16g
PRIMARY TUBE DIAMETER IN	1.625 in.
PACKAGE CONTENTS	Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware
HEADER MATERIAL	Mild Steel
HEADER FINISH	HTC Polished Silver Ceramic-Metallic
CYLINDER HEAD PORT SHAPE	Dog Leg
CYLINDER HEAD	Stock Profile Heads
HEADER CONSTRUCTION	MILD STEEL- Standard-Duty
REPLACEMENT GASKET	Hedman Part #27850
REPLACEMENT HEAD FLANGE GASKET	N/A
PORT SHAPE	Dog Leg
COLLECTOR BOLTS INCLUDED	Yes

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.

CA Prop 65

CARB warning

Hedman Hedders 98316 Specifications

KEY SPECS
MFG. Part #	98316
Brand	Hedman Hedders
Header Tube Type	Long Tube
Exhaust Port Shape	D-port
Primary Tube Diameter	1-5/8"
Material Type	Mild Steel
Color	Silver
Weld-Up	No
Collector Diameter	3 Inch
Finish	Polished
Hardware Included	Yes
Gasket(s) Included	Yes
Collector Reducers Included	Yes
Collector Reducer Exit Diameter	2.5"

GENERAL
Sold in Quantity	Set
Collector Length	3"
Flange Thickness	0.3125"
Tuned	No
Crossover Pipe Included	No
Primary Tube Gauge	16-gauge

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