Hedman Hedders 63448 84-91 Corvette Headers, Black

#41863448

Hedman Hedders 63448 84-91 Corvette Headers, Black

Elite 84-91 Corvette 283-400- Black Maxx

$705.37

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Product Summary

Long Tube Header Tube Type, Oval Exhaust Port Shape

Elite 84-91 Corvette 283-400- Black Maxx

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Key Specs

MFG. Part #	63448
Header Tube Type	Long Tube
Exhaust Port Shape	Oval
Flange Style	Standard
Primary Tube Diameter	1-5/8"

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Need To Know

Made to Order

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Hedman Hedders 63448 Details

Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing Headers for Chevy Corvettes 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 Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

This set is part of Hedman's BLACK ELITE line of headers. Hedman BLACK ELITE headers have a heavy-duty design that uses stout 3/8" flanges, and thicker 14 gauge primary tubes. The heavier-duty construction of HEDMAN BLACK ELITE Hedders makes them ideal for high-performance engines and tow vehicles, both of which produce higher exhaust temperatures.

BLACK ELITE models have a SATIN-BLACK ceramic finish that can withstand temperatures up to 1400 degrees F. The coating looks great, and keeps more heat in the tubes. This results in faster exhaust speeds for improved exhaust scavenging, and reduced underhood temperatures.

These LONG-TUBE headers fit 1984-1991 Chevy Corvettes powered by a SB Chevy (Gen 1) engine. The smooth 1-5/8 in tube design provides ample exhaust flow to let your Vette's 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque.

Each set includes a pair of 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. The ceramic-metallic coating is covered by a 5-year factory warranty, in addition to Hedman's standard lifetime header warranty.

Features

Elite 84-91 Corvette 283-400- Black Maxx

Application

1988 Chevrolet Corvette 35th Anniversary Edition CID 350 Naturally Aspirated GAS
1984-1987 Chevrolet Corvette Base CID 350 Naturally Aspirated GAS
1989-1990 Chevrolet Corvette Base CID 350 Naturally Aspirated GAS

Specs

Manufacturer Specs:

TUBE DIAMETER	1-5/8 in.
TUBE STYLE	Long Tubes
AIR CONDITIONING	Yes
AUTOMATIC TRANSMISSION - COLUMN	No
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	Header(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions
FINISH	BLACK MAXX Satin Black Ceramic-Metallic
FINISH TYPE	BLACK MAXX- Black Ceramic-Metallic Coating
FLANGE STYLE	Standard
FLANGE THICKNESS	0.375 in.
HEADER STYLE	Long Tube
NOTES	84-91 Chevrolet Corvette 283-400
MATERIAL	Mild Steel
TUBE DESIGN	Standard
TUBE LENGTH	Long Tubes
TUBE MATERIAL THICKNESS	14g
TUBE SIZE	1-5/8 in.
WITH AIR SYSTEM	No
WITH EGR	No
EO	No
WELD-UP	No
TUNED	No
BOLTS/STUDS INCLUDED	Yes
CATALYTIC CONVERTERS INCLUDED	No
CROSSOVER PIPE INCLUDED	No
GASKET OR SEAL INCLUDED	Yes
HEADER FASTENERS INCLUDED	Yes
INSTALLATION HARDWARE INCLUDED	Yes
MOTOR MOUNTS INCLUDED	No
MOUNTING HARDWARE INCLUDED	Yes
REDUCERS INCLUDED	Yes
Y-PIPE INCLUDED	No
QUANTITY	Sold as a pair.
PRIMARY TUBE GAUGE	14g
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	BLACK MAXX Satin Black Ceramic-Metallic
CYLINDER HEAD PORT SHAPE	Oval
CYLINDER HEAD	Stock Profile Heads
HEADER CONSTRUCTION	MILD STEEL- ELITE Heavy-Duty
REPLACEMENT GASKET	41827470
REPLACEMENT HEAD FLANGE GASKET	41827470
HEADER PORT SHAPE	Oval Port
PORT SHAPE	Oval
COLLECTOR BOLTS INCLUDED	Yes
AIR CONDITIONING NOTES	Non-EGR

Guides & Documents

Headers Installation Instructions (41863448)

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 WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Hedman Hedders 63448 Specifications

KEY SPECS
MFG. Part #	63448
Brand	Hedman Hedders
Header Tube Type	Long Tube
Exhaust Port Shape	Oval
Flange Style	Standard
Primary Tube Diameter	1-5/8"
Material Type	Mild Steel
Color	Black
Weld-Up	No
Collector Diameter	3 Inch
Finish	Satin
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	0.375"
Tuned	No
Crossover Pipe Included	No
Primary Tube Gauge	14-gauge

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