GM A-Body cars went through a transformation in 1978, and although GM redesignated rear-wheel drive A-Body models as G-Bodies beginning in 1982, the platform remained relatively unchanged until 1988. The 1978-88 A & G-Body segment contains some of the more iconic muscle cars of that era, making them prime candidates for an LS swap.

Hedman Hedders has been building exhaust headers in the USA since 1954, and their extensive experience shows in the construction of these 1-3/4" diameter, mid-length LS swap headers, designed specifically for installing the reliable, late-model powerplant into 1978-87 Caballero, Cutlass, El Camino, Grand Prix, and Regal, or 1978-88 Monte Carlo models.

Built from mild steel material and handcrafted in our Whittier, California manufacturing plant, these headers come complete with gaskets, small head header bolts, and exhaust collector adapter for attaching the headers to a 2-1/2" exhaust system. They have a durable, polished silver ceramic-metallic finish to keep underhood temperatures down, increase exhaust speed to help with scavenging, and look good great at the same time. Also available with Hedman's Black-Maxx satin black ceramic-metallic finish, or uncoated.

As with all Hedman Hedders, these headers are backed by a limited lifetime warranty, and the coating is covered for a full 5 years.

To ensure proper fit, we recommend the use of Trans-Dapt's engine and transmission swap mounts designed for you with these headers.

Features

LS Engine Swap Headers
LS Into 78-88 GM A & G-Body Cars
1-3/4 In. Mid-Length Design
3 In. Collector- HTC Polished Silver Ceramic-Coated Mild Steel

Application

1978-1981 Buick Century 4.8 Liter RWD
1978-1981 Buick Century 5.3 Liter RWD
1978-1981 Buick Century 6.0 Liter RWD
1978-1987 Buick Regal 4.8 Liter RWD
1978-1987 Buick Regal 5.3 Liter RWD
1978-1987 Buick Regal 6.0 Liter RWD
1978-1987 Chevrolet El Camino 4.8 Liter RWD
1978-1987 Chevrolet El Camino 5.3 Liter RWD
1978-1987 Chevrolet El Camino 6.0 Liter RWD
1978-1983 Chevrolet Malibu 4.8 Liter RWD
1978-1983 Chevrolet Malibu 5.3 Liter RWD
1978-1983 Chevrolet Malibu 6.0 Liter RWD
1978-1988 Chevrolet Monte Carlo 4.8 Liter RWD
1978-1988 Chevrolet Monte Carlo 5.3 Liter RWD
1978-1988 Chevrolet Monte Carlo 6.0 Liter RWD
1978-1987 GMC Caballero 4.8 Liter RWD
1978-1987 GMC Caballero 5.3 Liter RWD
1978-1987 GMC Caballero 6.0 Liter RWD
1978-1981 Oldsmobile Cutlass 4.8 Liter RWD
1978-1981 Oldsmobile Cutlass 5.3 Liter RWD
1978-1981 Oldsmobile Cutlass 6.0 Liter RWD
1978-1987 Oldsmobile Cutlass Supreme 4.8 Liter RWD
1978-1987 Oldsmobile Cutlass Supreme 5.3 Liter RWD
1978-1987 Oldsmobile Cutlass Supreme 6.0 Liter RWD
1982-1986 Pontiac Bonneville 4.8 Liter RWD
1982-1986 Pontiac Bonneville 5.3 Liter RWD
1982-1986 Pontiac Bonneville 6.0 Liter RWD
1981-1987 Pontiac Grand Prix 4.8 Liter RWD
1981-1987 Pontiac Grand Prix 5.3 Liter RWD
1981-1987 Pontiac Grand Prix 6.0 Liter RWD

Specs

Manufacturer Specs:

TUBE DIAMETER	1-3/4 in.
TUBE STYLE	Mid-Length
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, gaskets, 3-bolt exhaust adapters, mounting hardware
ENGINE	Chevy LS Series
FINISH	HTC Polished Silver Ceramic-Metallic
FINISH TYPE	HTC SILVER (polished) Ceramic-metallic Coating
FLANGE STYLE	Standard
FLANGE THICKNESS	0.375 in.
HEADER STYLE	Mid-Length Tube
MATERIAL	Mild Steel
TUBE DESIGN	Standard
TUBE LENGTH	Mid-Length Tubes
TUBE MATERIAL THICKNESS	16g
TUBE SIZE	1-3/4 in.
WITH AIR SYSTEM	No
WITH EGR	No
EO	No
WELD-UP	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
REDUCERS INCLUDED	Yes
Y-PIPE INCLUDED	No
QUANTITY	Sold as a pair.
PRIMARY TUBE GAUGE	16g
PRIMARY TUBE DIAMETER IN	1.75 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	Round
CYLINDER HEAD	Stock Profile Heads
HEADER CONSTRUCTION	MILD STEEL- Standard-Duty
REPLACEMENT GASKET	41827500
REPLACEMENT HEAD FLANGE GASKET	N/A
HEADER PORT SHAPE	Round Port
PORT SHAPE	Round
COLLECTOR BOLTS INCLUDED	Yes
ENGINE NOTES	YES
CHASSIS COMPATIBILITY	Manual Transmission
VEHICLE FAMILY	HEADERS
ENGINE MOUNT KIT LS 4L60E70E IN 68-72 GM A-BOD	A-Body (GM) 1978-81
HEAD STYLE	Automatic Transmission
FOR USE ON	G-Body (GM) 1982-88
REDUCER OUTLET DIAMETER	Yes
MANUFACTURER NOTE:	2-1/2 in.

Guides & Documents

Headers Technical Information (41868026)

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 68026 Specifications

KEY SPECS
MFG. Part #	68026
Brand	Hedman Hedders
Header Tube Type	Mid-Length
Exhaust Port Shape	Round
Flange Style	Standard
Primary Tube Diameter	1-3/4"
Material Type	Mild Steel
Color	Silver
Weld-Up	No
Collector Diameter	3 Inch
Finish	Polished
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"
Crossover Pipe Included	No
Primary Tube Gauge	16-gauge

Ratings & Reviews

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Questions & Answers

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Fitment

2004 Buick Rainier

GM LM4

2006-2007 Cadillac CTS

GM LS2

2009-2014 Cadillac CTS

GM LSA

2002-2011 Cadillac Escalade

GM LM7
GM LQ9

2012 Cadillac Escalade

6.2 Chevy LS V8

2013 Cadillac Escalade

GM L9H

2014 Cadillac Escalade

GM L94

2003-2006 Cadillac Escalade ESV

GM LM7
GM LQ9

2007-2012 Cadillac Escalade ESV

6.2 Chevy LS V8

2013 Cadillac Escalade ESV

GM L9H

2014 Cadillac Escalade ESV

GM L94

2002-2006 Cadillac Escalade EXT

GM LM7
GM LQ9

2007-2012 Cadillac Escalade EXT

6.2 Chevy LS V8

2013 Cadillac Escalade EXT

GM L9H

2007-2011 Chevy Avalanche

GM L76
GM LC9
GM LMG
GM LY5

2012-2013 Chevy Avalanche

GM LY5

2002-2006 Chevy Avalanche 1500

GM LM7

2000-2002 Chevy C1500

4.8 Chevy LS V8
GM LM7
GM LQ4

2010-2014 Chevy Camaro

GM LS3

2005-2007 Chevy Corvette

GM LS2

2008-2013 Chevy Corvette

GM LS3

2006-2009 Chevy Impala

GM LS4

2006-2007 Chevy Monte Carlo

GM LS4

1999 Chevy Silverado 1500

4.8 Chevy LS V8
GM LM7

2000-2011 Chevy Silverado 1500

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2

2012-2014 Chevy Silverado 1500

4.8 Chevy LS V8
GM LM7

2007 Chevy Silverado 1500 Classic

GM LQ4

2001-2003 Chevy Silverado 1500 HD

GM LQ4

2005-2006 Chevy Silverado 1500 HD

GM LQ4

2007 Chevy Silverado 1500 HD

GM LQ9

2007 Chevy Silverado 1500 HD Classic

GM LQ4

2019 Chevy Silverado 1500 LD

GM L98

2000-2004 Chevy Silverado 2500

GM LM7
GM LQ4

2005 Chevy Silverado 2500

GM L98
GM LQ9

2006-2014 Chevy Silverado 2500

GM L98

2001-2011 Chevy Silverado 2500 HD

GM LQ4

2012-2014 Chevy Silverado 2500 HD

GM L98

2007 Chevy Silverado 2500 HD Classic

GM LQ4

2001-2006 Chevy Silverado 3500

GM LQ4

2007-2013 Chevy Silverado 3500

GM L98

2015-2018 Chevy Silverado 3500

GM L98

2007 Chevy Silverado 3500 Classic

GM LQ4

2007-2011 Chevy Silverado 3500 HD

GM LQ4

2012 Chevy Silverado 3500 HD

GM L98

2013 Chevy Silverado 3500 HD

GM LZ1

2014-2017 Chevy SS

GM LS3

2003-2004 Chevy SSR

GM LM4

2005-2006 Chevy SSR

GM L77

2014 Chevy Suburban

GM LMG
GM LY5

2000-2001 Chevy Suburban 1500

GM LM7

2002-2006 Chevy Suburban 1500

GM L59
GM LM7

2007-2009 Chevy Suburban 1500

GM LC9
GM LMG
GM LY5

2010-2011 Chevy Suburban 1500

GM LC9
GM LMG

2012-2014 Chevy Suburban 1500

GM LMG
GM LY5

2000-2006 Chevy Suburban 2500

GM LQ4

2007-2011 Chevy Suburban 2500

GM L96

2012-2013 Chevy Suburban 2500

GM LMG
GM LY5

2000-2006 Chevy Tahoe

4.8 Chevy LS V8
GM L59
GM LM7

2007 Chevy Tahoe

4.8 Chevy LS V8
GM LMG
GM LY5

2008 Chevy Tahoe

6.2 Chevy LS V8
GM L9H
GM LC9
GM LMG
GM LZ1

2009 Chevy Tahoe

GM L9H
GM LC9
GM LMG
GM LZ1

2010-2011 Chevy Tahoe

GM LC9
GM LMG
GM LZ1

2012-2014 Chevy Tahoe

GM LMG
GM LY5

2002-2005 Chevy Trailblazer

GM LH6

2006-2009 Chevy Trailblazer

GM LS2

2002-2009 GMC Envoy

GM LM4

2002-2006 GMC Envoy XL

GM LM4

2004-2005 GMC Envoy XUV

GM LM4

2001-2005 GMC Savana 1500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006 GMC Savana 1500

4.8 Chevy LS V8
GM L33
GM L94
GM LM7
GM LQ4

2007-2014 GMC Savana 1500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

2001-2005 GMC Savana 2500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006-2013 GMC Savana 2500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

2002-2005 GMC Savana 3500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006-2013 GMC Savana 3500

4.8 Chevy LS V8
GM L33
GM L94
GM LQ4

1999-2011 GMC Sierra 1500

GM L20
GM L9H
GM LC9
GM LMG
GM LZ1

2007 GMC Sierra 1500 Classic

GM L33
GM L59
GM LM7

2001-2003 GMC Sierra 1500 HD

GM LQ4

2005-2006 GMC Sierra 1500 HD

GM LQ4

2007 GMC Sierra 1500 HD Classic

GM LQ4

1999-2001 GMC Sierra 2500

GM LM7
GM LQ4

2002-2004 GMC Sierra 2500

GM LQ4

2001-2011 GMC Sierra 2500 HD

GM LQ4

2015-2019 GMC Sierra 2500 HD

GM L96

2007 GMC Sierra 2500 HD Classic

GM LQ4

2001-2006 GMC Sierra 3500

GM LQ4

2007 GMC Sierra 3500

GM L96

2007 GMC Sierra 3500 Classic

GM LQ4

2007-2011 GMC Sierra 3500 HD

GM L96

2015-2019 GMC Sierra 3500 HD

GM L96

2001 GMC Sierra C3

GM LQ4

2000-2007 GMC Yukon

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2

2008-2011 GMC Yukon

4.8 Chevy LS V8
GM L20
GM L94
GM LM7
GM LY2
GM LZ1

2012-2013 GMC Yukon

GM L94
GM LC9
GM LMG
GM LZ1

2000 GMC Yukon XL 1500

GM LM7

2001-2011 GMC Yukon XL 1500

GM L59
GM LM7
GM LQ4

2012-2014 GMC Yukon XL 1500

GM L96

2000-2011 GMC Yukon XL 2500

GM LQ4

2012-2013 GMC Yukon XL 2500

GM L96

2003-2007 Hummer H2

GM LQ4

2008-2009 Hummer H2

6.2 Chevy LS V8

2008-2009 Hummer H3

GM LH8

2010 Hummer H3

GM LH9

2009 Hummer H3T

GM LH8

2010 Hummer H3T

GM LH9

2009 Pontiac G8

GM LS3

2005-2006 Pontiac GTO

GM LS2