1981 GMC G2500 Headers and Exhaust Parts

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1981 GMC G2500

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1981 GMC G2500

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Stainless Oval Exhaust Pipe, Hardway Mandrel Bend

Speedway Motors |

#91013960

Stainless Oval Exhaust Pipe, Hardway Mandrel Bend

Exhaust Pipe Type:

Custom Tubing

Color:

Natural

Sold in Quantity:

Each

$49.99

/each

Dynatech |

#31178003519

Dynatech® 780-03519 Plain Steel Merge Collector 2-3/8 x 4-1/2

Material Type:

Steel

Sold in Quantity:

Each

$254.99

/each

-9%

Patriot Exhaust |

#447H7763

Patriot Exhaust H7763 Tubing, Mild Steel, 2-1/2 Inch, 16 Gauge

(1)

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.50"

$65.88

/each

$72.47

-34%

MagnaFlow |

#37611386

MagnaFlow 11386 4 Inch x 9 Inch Oval Dual/Dual Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$170.00

/each

$259.05

-33%

MagnaFlow |

#37612216

MagnaFlow 12216 5x8 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$130.00

/each

$196.64

Exhaust System Header Wrapping

Whether you’re looking for performance improvements or heat reduction, if you decide to wrap your headers, we'll show you the benefits and possible precautions to take before you wrap your exhaust.

Speedway Roadster Headers for a 305 Trike

In this Tech Tip, a customer asked about using a set of Small Block Chevy Sprint Roadster headers for his trike, powered by a stock 305.

Exhaust Repair

Some basic info on the various exhaust options carried by Speedway Motors.

Speedway Tech Talk - Derby Car Headers

Jeremy explains the different options of headers that Speedway Motors offers for Demolition Derby cars. Watch this video to see a variety of options and the benefits of certain headers.

Replacing GM Rear End Spherical Bushings

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Rebuilding Junkyard SBC Vortec Cylinder Heads

Learn how to re-build a junkyard Small Block Chevy. A step-by-step guide on how to select a SBC, machine the valve guide bosses down, and what parts to use to upgrade to your personal liking.

-33%

MagnaFlow |

#37618129

MagnaFlow 18129 4 Inch x 18 Inch Glasspack Performance Muffler

Muffler Type:

Glass Pack

Inlet Diameter:

Outlet Diameter:

$75.00

/each

$113.58

Dynatech |

#31178003510

Dynatech® 780-03510 Plain Steel Merge Collector 2-1/2 x 4-1/2

Primary Tube Diameter:

2-1/2"

$249.99

/each

-7%

Flowmaster |

#37815926

Flowmaster 15926 S-Bend Assortment, 2.5in set of 6

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.50"

$259.95

/kit

$281.95

Stainless Steel Chamber Muffler, 2.25 Inch, Offset/Offset

Speedway Motors |

#9302006

Stainless Steel Chamber Muffler, 2.25 Inch, Offset/Offset

(1)

Garage Sale Type:

Discontinued

Muffler Type:

Chambered

Inlet Diameter:

2.25"

$90.99

/each

-9%

Patriot Exhaust |

#447H1571

Patriot Exhaust H1571 Exhaust Tip Driveshaft Chrome

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Chrome

$41.71

/each

$45.88

-9%

Patriot Exhaust |

#447H7760

Patriot Exhaust H7760 Tubing, Mild Steel, 2-1/4 Inch, 18 Gauge

Exhaust Tubing Diameter:

2-1/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.25"

$65.88

/each

$72.47

-9%

Patriot Exhaust |

#447H7066

Patriot Exhaust H7066 16 Gauge Exhaust Pipe U-Bends, 4 Inch

(2)

Exhaust Tubing Diameter:

4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

4.00"

$98.79

/each

$108.67

-9%

JBA 12-08215 Double Wall Polished SS Chrome Tip

JBA Headers |

#4471208215

JBA 12-08215 Double Wall Polished SS Chrome Tip

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Chrome

$64.12

/each

$70.53

-9%

Patriot Exhaust |

#447H7659

Patriot Exhaust H7659 2-1 Formed Collector, 1-5/8x2x6-1/2 Inch

Material Type:

Steel

Sold in Quantity:

Each

$43.88

/each

$48.27

-9%

Patriot Exhaust |

#447H7691

Patriot Exhaust H7691 Slip-On 4-1 Collectors, 2-1/4x4x12

Material Type:

Steel

Sold in Quantity:

Pair

$329.39

/pair

$362.33

$389 Off

Hooker Headers |

#42511052HKR

Hooker Headers 11052HKR Cut-Out Dual Kit with Remote

Exhaust Tubing Diameter:

3 Inch

Finish:

Raw

$329.95

/kit

$718.95

-14%

Innovate Motorsports |

#93537370

Innovate Motorsports 37370 Bosch LSU 4.2 5-Wire, O2 Sensor

GTIN Code:

856428037377

Sold in Quantity:

Each

$105.99

/each

$124.31

-7%

Mr Gasket |

#5507177C

Mr Gasket 7177C Collector Gaskets, Copper, Triangle, 3 Inch

(1)

Inside Diameter:

Collector Diameter:

3 Inch

Flange Style:

3-Bolt

$32.74

/pair

$35.42

-7%

Hooker BHS518 Blackheart LT Swap Exhaust Manifolds, Black Ceramic

Hooker Headers |

#425BHS518

Hooker BHS518 Blackheart LT Swap Exhaust Manifolds, Black Ceramic

Finish:

Ceramic Coated

Collector Diameter:

2-1/2 Inch

$571.95

/set

$618.95

Quick Time Performance |

#91610226

QTP QTEC50 QTEC Electric Cutout, Dual

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Raw

Inlet Diameter (Fraction):

2-1/2"

$430.99

/pair

$476 Off

MagnaFlow |

#37610702

MagnaFlow 10702 2.5 Inch Stainless Custom Builder Exhaust System

Exhaust System Type:

Header-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/2 Inch

$911.00

/each

$1,387.18

-34%

MagnaFlow |

#37610425

MagnaFlow 10425 4x4 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$119.00

/each

$180.77

-34%

MagnaFlow |

#37612265

MagnaFlow 12265 5x8 Inch Oval Offset/Dual Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$182.00

/each

$276.49

Netami NT-1690CBK Black Ceramic Side Exit Dual CER Exhaust Tip

NETAMI Exhaust |

#21601690

Netami NT-1690CBK Black Ceramic Side Exit Dual CER Exhaust Tip

Exhaust Tubing Diameter:

3-1/2 Inch

Finish:

Black

$229.99

/each

Netami NT2580 304 Stainless Steel Exhaust Tips, 2 Pack

NETAMI Exhaust |

#21602580

Netami NT2580 304 Stainless Steel Exhaust Tips, 2 Pack

Exhaust Tubing Diameter:

5 Inch

Material Type:

304 Stainless Steel

Sold in Quantity:

Pair

$149.99

/pair

NETAMI Exhaust |

#21602590

Netami 2590 304 Stainless Steel Charger Exhaust Tips, Pair

Exhaust Tubing Diameter:

5 Inch

Material Type:

304 Stainless Steel

Sold in Quantity:

Pair

as low as

$179.99

/pair

Netami NT3091 304 Stainless Steel Exhaust Tips, 2 Pack

NETAMI Exhaust |

#21603091

Netami NT3091 304 Stainless Steel Exhaust Tips, 2 Pack

Exhaust Tubing Diameter:

4 Inch

Material Type:

304 Stainless Steel

Sold in Quantity:

Pair

$129.99

/pair

-20%

Vibrant |

#32111107

Vibrant 1107 Streetpower 20" Stainless Steel Universal Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$159.99

/each

$199.99

-16%

Speedhut |

#140022114L

Speedhut L2-B4-LEG 2-1/16" Boost Gauge 0-30 psi

Body Diameter:

2.05"

Depth:

1.3"

Gauge Series:

Analog

$183.94

/each

$220.73

-16%

Speedhut |

#1400225015R

Speedhut R25-BV5-REV 2-5/8" Boost/Vac Gauge 750mmhg-0-2.0 bar

Body Diameter:

2.05"

Depth:

1.3"

Gauge Series:

Analog

$210.20

/each

$252.24

-16%

Speedhut |

#140022502R

Speedhut R25-B2-REV 2-5/8" Boost Gauge 0-15 psi w/Warning

Body Diameter:

2.05"

Depth:

1.3"

Gauge Series:

Analog

$210.20

/each

$252.24

-12%

Daytona Sensors |

#16615001

Daytona Sensors 115001, WEGO Replacement Wide-Band O2 Sensor

Sold in Quantity:

Each

$125.75

/each

$142.95

-16%

Speedhut |

#1400225111L

Speedhut L25-BV1-LEG 2-5/8" Boost/Vac Gauge 30inhg-0-10 psi

Body Diameter:

2.62"

Depth:

1.3"

Gauge Series:

Analog

$195.97

/each

$235.17

New Vintage USA |

#276119491

New Vintage USA 01194-91 Performance 2-1/16" Vacuum/Boost Gauge

Gauge Series:

Analog

Gauge Face Color:

White

Gauge Number Color:

Black

$230.99

/each

New Vintage USA |

#276119493

New Vintage USA 01194-93 Performance 2-1/16" Vacuum/Boost Gauge

Gauge Series:

Analog

Gauge Face Color:

White

Gauge Number Color:

Black

$230.99

/each

-16%

Speedhut |

#140022518L

Speedhut L25-B8-LEG 2-5/8" Boost Gauge 0-4.0 bar

Body Diameter:

2.62"

Depth:

1.3"

Gauge Series:

Analog

$195.97

/each

$235.17

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1981 GMC G2500 Headers and Exhaust Parts

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Part

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Products

Stainless Oval Exhaust Pipe, Hardway Mandrel Bend

Dynatech® 780-03519 Plain Steel Merge Collector 2-3/8 x 4-1/2

Patriot Exhaust H7763 Tubing, Mild Steel, 2-1/2 Inch, 16 Gauge

MagnaFlow 11386 4 Inch x 9 Inch Oval Dual/Dual Stainless Muffler

MagnaFlow 12216 5x8 Inch Oval Center/Center Stainless Muffler

Related Articles

MagnaFlow 18129 4 Inch x 18 Inch Glasspack Performance Muffler

Dynatech® 780-03510 Plain Steel Merge Collector 2-1/2 x 4-1/2

Flowmaster 15926 S-Bend Assortment, 2.5in set of 6

Stainless Steel Chamber Muffler, 2.25 Inch, Offset/Offset

Patriot Exhaust H1571 Exhaust Tip Driveshaft Chrome

Patriot Exhaust H7760 Tubing, Mild Steel, 2-1/4 Inch, 18 Gauge

Patriot Exhaust H7066 16 Gauge Exhaust Pipe U-Bends, 4 Inch

JBA 12-08215 Double Wall Polished SS Chrome Tip

Patriot Exhaust H7659 2-1 Formed Collector, 1-5/8x2x6-1/2 Inch

Patriot Exhaust H7691 Slip-On 4-1 Collectors, 2-1/4x4x12

Hooker Headers 11052HKR Cut-Out Dual Kit with Remote

Innovate Motorsports 37370 Bosch LSU 4.2 5-Wire, O2 Sensor

Mr Gasket 7177C Collector Gaskets, Copper, Triangle, 3 Inch

Hooker BHS518 Blackheart LT Swap Exhaust Manifolds, Black Ceramic

QTP QTEC50 QTEC Electric Cutout, Dual

MagnaFlow 10702 2.5 Inch Stainless Custom Builder Exhaust System

MagnaFlow 10425 4x4 Inch Round Center/Center Stainless Muffler

MagnaFlow 12265 5x8 Inch Oval Offset/Dual Stainless Muffler

Netami NT-1690CBK Black Ceramic Side Exit Dual CER Exhaust Tip

Netami NT2580 304 Stainless Steel Exhaust Tips, 2 Pack

Netami 2590 304 Stainless Steel Charger Exhaust Tips, Pair

Netami NT3091 304 Stainless Steel Exhaust Tips, 2 Pack

Vibrant 1107 Streetpower 20" Stainless Steel Universal Muffler

Speedhut L2-B4-LEG 2-1/16" Boost Gauge 0-30 psi

Speedhut R25-BV5-REV 2-5/8" Boost/Vac Gauge 750mmhg-0-2.0 bar

Speedhut R25-B2-REV 2-5/8" Boost Gauge 0-15 psi w/Warning

Daytona Sensors 115001, WEGO Replacement Wide-Band O2 Sensor

Speedhut L25-BV1-LEG 2-5/8" Boost/Vac Gauge 30inhg-0-10 psi

New Vintage USA 01194-91 Performance 2-1/16" Vacuum/Boost Gauge

New Vintage USA 01194-93 Performance 2-1/16" Vacuum/Boost Gauge

Speedhut L25-B8-LEG 2-5/8" Boost Gauge 0-4.0 bar