1978 GMC G-Series Performance Exhaust Systems

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    • (0 reviews)
      # 380799176
      GMC G-Series with PRE-OBDII Models 1978, Pre-OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Direct Fit. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic...
      $262.24
    • (0 reviews)
      # 96409912
      GMC G-Series with Power Steering 1978, Standard Duty Mild Steel Long Tube Exhaust Headers by Hedman Hedders®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Header Style: Long Tube. The standard-duty Hedman Hedders come...
      $240.04 - $629.46
    • (0 reviews)
      # 496461090
      GMC G-Series 5.0L / 5.7L / 6.6L 1978, 409 SS Natural Upright Exhaust Headers by Flowtech®. Collector Outlet Diameter: 3". Emissions: Racing Only. Finish: Natural. Color: Silver. Header Coating: Uncoated. Flowtech Headers are the...
      $226.95 - $247.95
    • (0 reviews)
      # 231092448
      GMC G-Series 5.0L / 5.7L / 6.6L with Angle or Straight Plug Heads with Chevy Small Block Engine 1978, Black Painted Dirt Late Model Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.75"-1.875". Collector Outlet Diameter: 3.5"....
      $365.99
    • (0 reviews)
      # mpn358945592
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Black Painted Economy Crossover Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Emissions: Racing Only. Finish: Black...
      $329.99
    • (0 reviews)
      # 231092493
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Black Painted Long Tube Pavement Late Model Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.75"-1.875". Collector Outlet Diameter: 3.5". Collector Length:...
      $444.99
    • (0 reviews)
      # 231092499
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Mid-Length Tube Modified Exhaust Headers by Dynatech®. Emissions: Racing Only. Header Style: Mid-Length Tube. These Mid Length Modified Headers have been designed for...
      $275.99 - $358.99
    • (0 reviews)
      # 231092439
      GMC G-Series with Chevy Small Block Engine 1978, Mild Steel 604 Crate Engine Dirt Late Model Exhaust Header Kit by Dynatech®. Primary Tubing Diameter: 1.625"-1.75". Collector Outlet Diameter: 3". Emissions: Racing Only. These 604 Crate...
      $379.99 - $423.99
    • (0 reviews)
      # 231092548
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Mild Steel Black Painted Stock Clip Exhaust Headers by Dynatech®. Collector Outlet Diameter: 3". Emissions: Racing Only. Finish: Black Painted. These Small Block Chevy...
      $309.99 - $314.99
    • (1 review)
      # mpn358945662
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Pro Cruiser Polished Street Rod Small Block Block Hugger Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.63". Collector Outlet Diameter: 2.5". Emissions:...
      $344.99
    • (0 reviews)
      # 231092515
      GMC G-Series with Chevy Small Block Engine 1978, Stainless Steel 604 Crate Engine Dirt Late Model Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.625"-1.75". Collector Outlet Diameter: 3". Emissions: Racing Only. These...
      $1,062.49
    • (0 reviews)
      # mpn358945683
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Stainless Steel Natural Weld-up Dragster Exhaust Header Kit by Dynatech®. Primary Tubing Diameter: 1.875"-2". Emissions: Racing Only. Finish: Natural. These Long Tube...
      $452.99
    • (0 reviews)
      # mpn4351213861
      GMC G-Series 5.0L / 5.7L / 6.6L 1978, Exhaust Headers by Advance Adapters®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
      High quality at an affordable priceExpertly made from premium materials
      $263.82
    • (0 reviews)
      # 564462237
      GMC G15 / G25 / G35 1978, Fenderwell Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Emissions: CARB compliant. This superior Patriot EXhaust product is just for you. Carefully...
      $297.89 - $573.35
    • (0 reviews)
      # 91567105
      GMC G-Series 5.0L / 5.7L / 6.6L with Small Block Chevy Engine 1978, Lakester Steel Weld-Up Exhaust Kit by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Emissions: Racing Only. Material: Steel. This superior Patriot EXhaust product...
      $229.26 - $237.32
    • (0 reviews)
      # 564954726
      GMC G15 / G25 / G35 1978, Long Tube Exhaust Headers by Patriot Exhaust®. Collector Outlet Diameter: 3". Header Style: Long Tube. This superior Patriot EXhaust product is just for you. Carefully designed for maximum performance, is will...
      $315.49 - $679.49
    • (0 reviews)
      # 378622444
      GMC G-Series 5.0L / 5.7L / 6.6L 1978, Roadster Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". This superior Patriot EXhaust product is just for you. Carefully designed for maximum...
      $266.11 - $556.88
    • (0 reviews)
      # mpn358950119
      GMC G-Series 5.0L / 5.7L / 6.6L with Small Block Chevy Engine 1978, Steel Raw Long Tube Bucket Sprint Car Style Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". Emissions: EPA...
      $236.01
    • (0 reviews)
      # 231092574
      GMC G-Series 5.0L / 5.7L / 6.6L with Small Block Chevy Engine 1978, Steel Tight Tuck Street Rod Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". This superior Patriot EXhaust product is just for you. Carefully...
      $202.89 - $530.71
    • (0 reviews)
      # 378622440
      GMC G-Series 5.0L / 5.7L / 6.6L 1978, Street Rod Sprint Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". Emissions: EPA compliant. This superior Patriot EXhaust product is just for...
      $264.29 - $512.25
    • (0 reviews)
      # 231299492
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Conventional Crossover Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.32 - $699.45
    • (0 reviews)
      # 87332639
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, DIRT Modified Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.32 - $301.92
    • (0 reviews)
      # mpn359116081
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Demolition Derby Exhaust Headers by Schoenfeld Headers®. Primary Tubing Diameter: 1.625". This top-notch product by Schoenfeld Headers is made to give that extra boost...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $144.22
    • (0 reviews)
      # 231299619
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Dirt Late Model Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates....
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.32 - $720.76
    • (0 reviews)
      # 513370508
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Exhaust Header by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $192.74 - $285.56
    • (0 reviews)
      # 87332687
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, IMCA Modified Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $154.18 - $379.85
    • (0 reviews)
      # 231300105
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, SBC Chassis Steel Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates....
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $154.18 - $212.02
    • (0 reviews)
      # mpn359116120
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Steel Painted 180 Crossover Exhaust Headers by Schoenfeld Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Finish: Painted. This top-notch...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $271.78
    • (0 reviews)
      # 231299319
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Steel Painted Sprint Car Exhaust Headers by Schoenfeld Headers®. Emissions: Racing Only. Finish: Painted. This top-notch product by Schoenfeld Headers is made to give...
      $221.66 - $608.29
    • (0 reviews)
      # 231300391
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Stock Clip Steel Painted Exhaust Headers by Schoenfeld Headers®. Finish: Painted. This top-notch product by Schoenfeld Headers is made to give that extra boost that...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $198.59 - $292.18
    • (0 reviews)
      # 231319329
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Street Stock Steel Painted Exhaust Headers by Schoenfeld Headers®. Finish: Painted. This top-notch product by Schoenfeld Headers is made to give that extra boost that...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $219.50 - $656.83
    • (0 reviews)
      # 87332720
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Tri-Y Modified Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $599.72 - $702.28
    • (0 reviews)
      # mpn359116012
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Zoomie Exhaust Headers by Schoenfeld Headers®. Standard Zoomie Grassburner. This top-notch product by Schoenfeld Headers is made to give that extra boost that every...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $133.12
    • (0 reviews)
      # 990456328
      GMC G-Series 5.0L / 5.7L / 6.6L With Small Block Chevy Engines 1978, Header Gasket by AllStar Performance®, 1 Piece. Durable reinforced steel core and graphite composite gaskets remain soft and pliable to conform to header and head...
      Precise manufacturing and high-grade materialsExpertly Crafted from the highest grade materials
      $7.59 - $9.49
    • (0 reviews)
      # mpn4515293962
      GMC G-Series 5.0L / 5.7L With Chevy Small Block Engines 1978, Ram Horn Exhaust Manifolds by AllStar Performance®. Pair. All new, "Ram Horn" manifolds have increased exhaust flow over traditional manifolds and added steering shaft...
      Precise manufacturing and high-grade materialsExpertly Crafted from the highest grade materials
      $299.99
    • (0 reviews)
      # 49715258
      GMC G-Series with PRE-OBDII Models 1978, Pre-OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port....
      $182.94
    • (0 reviews)
      # mpn1120837
      GMC G-Series 4.1L / 5.0L / 5.7L 1978, Standard Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5"....
      $144.58
    • (0 reviews)
      # 49715263
      GMC G-Series 1978, Standard Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter:...
      $77.88 - $119.11
    • (0 reviews)
      # mpn4478205127
      GMC G15 / G25 / G35 Automatic Transmission 1978, 304 SS Natural LS Turbo Crossover Tube by Hooker®. Material: 304 SS. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
      Choose Cross-Over Tube Based on Type of Transmission & Bell-HousingCross-Over Tubes Are 16 Gauge, Mandrel Bent 304 Stainless Steel & Include a Flex Joint & V-Band Flanges
      $199.95
    • (0 reviews)
      # 231092505
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine / with LS-Based Engines 1978, MuscleMAXX Stainless Steel Natural Header Reducer Cone Kit by Dynatech®. Finish: Natural. Material: Stainless Steel. Dynatech® reducer cone...
      Made of High Quality MaterialsBuilt to Last
      $160.99
    • (0 reviews)
      # mpn358582413
      GMC G-Series 5.0L / 5.7L / 6.6L 1978, Aluminum Header Flange Kit by Moroso®. Material: Aluminum. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is...
      High quality at an affordable priceExpertly made from premium materials
      $115.02
    • (0 reviews)
      # mpn359115880
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Aluminum Inner Header Flange by Schoenfeld Headers®. Primary Tubing Diameter: 1.25". Material: Aluminum. This top-notch product by Schoenfeld Headers is made to give...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $53.42
    • (0 reviews)
      # mpn306537478
      GMC G-Series 5.0L / 5.7L / 6.6L For Stock Or CNC Ported Heads 1978, Premium Header Gasket Set by BBK®. These premium steel core graphite gaskets are flexible for a long lasting leak-proof seal even when cylinder head and header flange...
      Provides a long lasting, leak-proof sealFlexible graphite will conform to surface irregularities and won't stick to headers or cylinder head
      $39.99
    • (0 reviews)
      # mpn583856284
      GMC G-Series 5.0L / 5.7L 1978, Super Competition™ Exhaust Header Gasket by Hooker®. Hooker's precision-matched Super Competition header gaskets provide a sure fit and unmatched exhaust sealing. This OEM quality gasket is constructed...
      Precision fit for improved sealingSteel core provides superior adhesion
      $13.47
    • (0 reviews)
      # mpn358945752
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Aluminum Adapter Plate by Dynatech®. Material: Aluminum. These SBC to Stahl Aluminum Adapter Plate Kits allow you to use a larger tube size to maximize power.
      Delivers a huge boost in performance and an awesome soundRigorously dyno-tested to provide maximum horsepower and torque gains
      $186.49
    • (0 reviews)
      # mpn358945745
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Fiber Exhaust Header Gasket by Dynatech®. Material: Fiber. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike....
      Made of High Quality MaterialsNo Leaks
      $18.29
    • (0 reviews)
      # mpn358945740
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Spread Port Exhaust Header Gasket Kit by Dynatech®. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike. Specifically...
      Made of High Quality MaterialsBuilt to Last
      $18.29
    • (0 reviews)
      # mpn358945741
      GMC G-Series 5.0L / 5.7L / 6.6L with Chevy Small Block Engine 1978, Standard Port Exhaust Header Gasket Kit by Dynatech®. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike. Specifically...
      Made of High Quality MaterialsSold in Pairs
      $18.29
    • (0 reviews)
      # 118583872
      GMC G-Series 5.0L / 5.7L / 6.6L 1978, Compressed Ceramic Fiber Exhaust Header Gaskets by Spectre Performance®. Material: Compressed Ceramic Fiber. Rooted in racing, Spectre Performance designs and builds every product with the same goal...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $17.37
    • (0 reviews)
      # mpn584600114
      GMC G-Series 5.0L / 5.7L / 6.6L with Small Block Chevy Engine 1978, Spread Port Exhaust Header Gasket by Brodix®. The Brodix Exhaust Gaskets are specifically engineered to fit the precise dimensions of Brodix cylinder heads. When the...
      Designed to boost your vehicle's performanceMade from high-quality materials
      $15.59
    • (0 reviews)
      # 466176500
      GMC G-Series 5.0L / 5.7L 1978, Multi-Layer Steel Exhaust Header Gasket by Cometic Gasket®. Material: Multi-Layer Steel. Exhaust Gaskets are designed for extreme cylinder pressures. MLS Exhaust Manifold Gaskets maintain a torque set and...
      Made of High Quality MaterialsBuilt to Last
      $19.12 - $35.86
    • (0 reviews)
      # 564657718
      GMC G-Series 1978, Multi-Layer Steel Exhaust Manifold Gasket by Cometic Gasket®. Material: Multi-Layer Steel. This state-of-the-art exhaust product combines advanced materials with the most current manufacturing processes to provide...
      Backed by unsurpassed quality and solid workmanshipWill deliver exceptional performance you expect to get
      $36.81
    • (0 reviews)
      # 245515971
      GMC G-Series 1978, Header Gasket by Howe Racing Enterprises®. Designed utilizing the latest technology, this product by Howe Racing Enterprises® features premium quality and will perform better than advertised. Perfect for your vehicle...
      High quality at an affordable priceExpertly made from premium materials
      $12.03
    • (0 reviews)
      # 231092562
      GMC G-Series 5.0L / 5.7L / 6.6L with Small Block Chevy Engine 1978, Header Flange Kit by Patriot Exhaust®. Patriot precision machined header flange kits are available for many popular engine families. Header flange kits come complete...
      Precision machined flangeBuilt of High quality materials
      $46.51 - $60.17
    • (0 reviews)
      # 652407865
      GMC G-Series 1978, Graph-Flex Header Flange Gaskets by Percy's High Performance®. Persy's High Performance makes exhaust manifold and collector gaskets that will withstand the temperatures generated by turbocharged motors, and exhaust...
      Modified engines have hotter exhaustBetter materials help seal poorly-mating flanges better.
      $23.97
    • (0 reviews)
      # 652297836
      GMC G-Series 1978, Graph-Flex™ Exhaust Header Gaskets by Percy's High Performance®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel. This is a premium,...
      Malleable stainless steel metal coreWill survive 2000°F exhaust temperatures for extended periods
      $21.54 - $23.97
    • (0 reviews)
      # 652343828
      GMC G-Series 1978, HTR Collector Gaskets by Percy's High Performance®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality. Designed utilizing the latest...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $16.86 - $18.77
    • (0 reviews)
      # 652806941
      GMC G-Series 1978, Seal-4-Good™ Aluminum Header Flange Gaskets by Percy's High Performance®. Material: Aluminum. Percy's High Performance makes exhaust manifold and collector gaskets that will withstand the temperatures generated by...
      Modified engines have hotter exhaustBetter materials help seal poorly-mating flanges better.
      $35.11
    • (0 reviews)
      # 378622453
      GMC G-Series 1978, Seal-4-Good™ Exhaust Header Gaskets by Percy's High Performance®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel. This is a premium,...
      Malleable stainless steel metal coreWill survive 2000°F exhaust temperatures for extended periods
      $33.24 - $35.11
    • (0 reviews)
      # 652454849
      GMC G-Series 1978, Seal-4-Good™ Round Header Flange Gaskets by Percy's High Performance®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality. Designed...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $35.11




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    1978 GMC G-Series Performance Exhaust Systems Reviews

    Average rating:  4  4 - 3 reviews
    3.5 of 5
    It Was To Small
    It was to small had to take it get fitted and cut down.
    CPosted by Charles (Cape Girardeau, MO) / March 13, 2018
    2007 Chevy Avalanche
    Was this review helpful for you? Yes
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