1985 GMC P-Series Performance Headers

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    • (0 reviews)
      # 231282374
      GMC P-Series 1985, Exhaust Manifold by ATP®. Emissions: EPA compliant. Color: Natural. Header Coating: Uncoated. ATP Graywerks Exhaust Manifolds are a high quality OE replacement alternative. Each manifold is developed off of the...
      Manufactured to OE design ensuring manifold will line up and flow like the original unitHigh grade metallurgy resists fatigue cracking and breakage
      $67.58 - $174.35
    • (0 reviews)
      # 231116868
      GMC P2500 / P3500 5.7L 1985, Exhaust Manifold by Dorman®. Emissions: CARB compliant. Color: Natural. Header Coating: Uncoated. This product is made of high-quality materials to serve you for years to come. Designed using...
      High Quality tubular construction protects against warping and/or crackingLeak-resistant for long-lasting performance
      $67.95 - $205.95
    • (0 reviews)
      # mpn4351213861
      GMC P2500 / P3500 / P6000 5.7L 1985, Exhaust Headers by Advance Adapters®. Emissions: EPA compliant. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
      High quality at an affordable priceExpertly made from premium materials
      $241.46
    • (0 reviews)
      # 231116357
      GMC P2500 / P3500 5.7L with Angle or Straight Plug Heads with Chevy Small Block Engine 1985, Dirt Late Model Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.75"-1.875". Collector Outlet Diameter: 3.5". Emissions: Racing Only....
      $319.99 - $365.99
    • (0 reviews)
      # 231116415
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Long Tube Pavement Late Model Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.75"-1.875". Collector Outlet Diameter: 3.5". Collector Length: 7.50". Emissions: Racing...
      $399.99 - $444.99
    • (0 reviews)
      # 231116337
      GMC P2500 / P3500 with Chevy Small Block Engine 1985, 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...
      $379.99
    • (1 review)
      # mpn358945662
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Pro Cruiser Street Rod Small Block Block Hugger Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.63". Collector Outlet Diameter: 2.5". Emissions: Racing Only. Comes...
      Improves Performance and Appearance100% stainless steel construction
      $299.99
    • (0 reviews)
      # 231116507
      GMC P2500 / P3500 with Chevy Small Block Engine 1985, 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)
      # 711149589
      GMC P-Series 7.4L with Chevy Big Block Engine 1985, Stainless Steel Long Tube Exhaust Headers by Dynatech®. Emissions: Racing Only. Header Style: Long Tube. These Long Tube Dragster Headers are designed with looks and performance in mind.
      $739.99 - $1,399.99
    • (0 reviews)
      # 231116526
      GMC P-Series 1985, Stainless Steel Weld-up Dragster Exhaust Header Kit by Dynatech®. Emissions: Racing Only. Color: Natural. Header Coating: Uncoated. Designed specifically for strut type front end cars and dragsters, this kit allows...
      $399.99
    • (0 reviews)
      # 302489248
      GMC P-Series 1985, Lakester Steel Weld-Up Exhaust Kit by Patriot Exhaust®. Emissions: Racing Only. Material: Steel. This superior Patriot EXhaust product is just for you. Carefully designed for maximum performance, is will more than...
      $229.26 - $270.62
    • (0 reviews)
      # 447931344
      GMC P3500 1985, Race Style Exhaust Header Weld-Up Kit by Patriot Exhaust®. Emissions: Racing Only. These kits work great for racers who need to build custom headers when a specific fit header is not available. This superior Patriot...
      $316.76 - $445.53
    • (0 reviews)
      # 378637895
      GMC P2500 / P3500 / P6000 5.7L 1985, 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...
      +1
      $255.91 - $542.26
    • (0 reviews)
      # 448099152
      GMC P2500 / P3500 1985, Steel 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...
      $315.49 - $679.49
    • (0 reviews)
      # mpn358950119
      GMC P2500 / P3500 5.7L with Small Block Chevy Engine 1985, Steel Long Tube Bucket Sprint Car Style Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". Emissions: EPA compliant. Color:...
      Expertly crafted from premium materialsQuality design and workmanship
      $236.01
    • (0 reviews)
      # 231116728
      GMC P-Series 1985, Steel Tight Tuck Street Rod Exhaust Headers by Patriot Exhaust®. This superior Patriot EXhaust product is just for you. Carefully designed for maximum performance, is will more than just meet your needs and...
      $205.77 - $539.96
    • (0 reviews)
      # 378637888
      GMC P2500 / P3500 / P6000 5.7L 1985, 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...
      $264.28 - $512.24
    • (0 reviews)
      # mpn358950110
      GMC P-Series 7.4L with Big Block Chevy Engine 1985, Tri-5 Steel Mid-Length Tube Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 2". Collector Outlet Diameter: 3.5". Emissions: Racing Only. Color: Gray. Header Coating:...
      Expertly crafted from premium materialsQuality design and workmanship
      $261.90
    • (0 reviews)
      # 231282243
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Conventional Crossover 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 - $699.45
    • (0 reviews)
      # 231282292
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, 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 product...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.32 - $301.92
    • (0 reviews)
      # mpn359116081
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, 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 that...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $144.22
    • (0 reviews)
      # 231282202
      GMC P-Series 5.7L with Chevy Small Block Engine 1985, 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. This product is...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.32 - $720.76
    • (0 reviews)
      # mpn359116142
      GMC P-Series 7.4L with Chevy Big Block Engine 1985, Dyno Sprint Exhaust Headers by Schoenfeld Headers®. Primary Tubing Diameter: 2.125". Collector Length: 13". This top-notch product by Schoenfeld Headers is made to give that extra...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $340.88
    • (0 reviews)
      # 513304511
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, 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 designed with...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $192.74 - $285.56
    • (0 reviews)
      # 466691109
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, H Style Conventional Crossover 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 - $292.18
    • (0 reviews)
      # 231282307
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, 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 product...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $167.23 - $379.85
    • (0 reviews)
      # 231282287
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, 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. This...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $167.23 - $212.02
    • (0 reviews)
      # 231282344
      GMC P-Series 1985, Sprint Car Exhaust Headers by Schoenfeld Headers®. Emissions: Racing Only. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with...
      $221.66 - $662.37
    • (0 reviews)
      # mpn359116120
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Steel 180 Crossover Exhaust Headers by Schoenfeld Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Header Coating: Painted. This top-notch product by...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $271.78
    • (0 reviews)
      # 231282328
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Stock Clip Steel Exhaust Headers by Schoenfeld Headers®. Header Coating: Painted. 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
      $198.59 - $292.18
    • (0 reviews)
      # 231282369
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Street Stock Steel Exhaust Headers by Schoenfeld Headers®. Header Coating: Painted. 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
      $219.50 - $599.72
    • (0 reviews)
      # 231282335
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, 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 product...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $599.72 - $702.28
    • (0 reviews)
      # mpn359116012
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, 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 driver...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $133.12
    • (0 reviews)
      # mpn4530157521
      GMC P2500 / P3500 / P6000 5.7L 1985, Hugger Style Headers by CFR Performance®. Ceramic coated "HUGGER" style headers. Heavy-duty construction with 1-5/8" tubes and 3/8" thick flange. Includes collector reducers, gaskets and bolts.
      Expertly Crafted from the highest grade materialsBuilt to provide the ultimate in reliability and strength
      $198.29
    • (0 reviews)
      # 581666044
      GMC P-Series 7.4L 1985, 3-Bolt Exhaust Flange by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose...
      Makes installation quick and easyOptimal OE-style fit and quality
      $5.68
    • (0 reviews)
      # 231116486
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine / with LS-Based Engines 1985, MuscleMAXX Stainless Steel Header Reducer Cone Kit by Dynatech®. Material: Stainless Steel. Dynatech® reducer cone kits for MuscleMaxx headers. Reducers...
      Made of High Quality MaterialsBuilt to Last
      $139.99
    • (0 reviews)
      # mpn358582413
      GMC P2500 / P3500 / P6000 5.7L 1985, 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)
      # 231282304
      GMC P-Series 1985, Header Flanges by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous attention to...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $47.47 - $53.42
    • (0 reviews)
      # mpn4544838197
      GMC P-Series 7.4L with Big Block Chevy Engine 1985, Steel Core Laminate Exhaust Gasket Set by AFR®. Material: Steel Core Laminate. This product is made of high-quality materials to serve you for years to come. Designed using...
      Designed to meet the needs of racers or street enthusiastsMade using the latest in modern technology and advanced processes
      $25.95
    • (0 reviews)
      # mpn4476217582
      GMC P-Series 7.4L 1985, GM Original Equipment™ Exhaust Manifold Gasket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $21.25
    • (0 reviews)
      # 1092511833
      GMC P-Series 1985, Exhaust Manifold Gasket Set by Apex Auto®. Designed utilizing the latest technology, this product by Apex Auto features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      Quick accurate delivery with excellent fill-rateExcellent inventory availability
      $3.36 - $8.63
    • (0 reviews)
      # 231116304
      GMC P-Series 1985, Exhaust Manifold Gasket Set by DNJ Engine Components®. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product is of the finest quality to provide...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $4.12 - $10.27
    • (0 reviews)
      # mpn584600114
      GMC P2500 / P3500 5.7L with Small Block Chevy Engine 1985, 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 competition...
      Designed to boost your vehicle's performanceMade from high-quality materials
      $15.59
    • (0 reviews)
      # 902283999
      GMC P-Series 1985, 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 resist...
      Made of High Quality MaterialsBuilt to Last
      $19.13 - $38.69
    • (0 reviews)
      # 564608749
      GMC P-Series 1985, 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 - $38.69
    • (0 reviews)
      # mpn358945752
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, 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
      $164.99
    • (0 reviews)
      # mpn358945745
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Fiber Exhaust Header Gasket by Dynatech®. Material: Fiber. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike. Specifically...
      Made of High Quality MaterialsNo Leaks
      $15.99
    • (0 reviews)
      # mpn358945740
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Spread Port Exhaust Header Gasket Kit by Dynatech®. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike. Specifically designed to...
      Made of High Quality MaterialsBuilt to Last
      $18.29
    • (0 reviews)
      # mpn358945741
      GMC P2500 / P3500 5.7L with Chevy Small Block Engine 1985, Standard Port Exhaust Header Gasket Kit by Dynatech®. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike. Specifically designed to...
      Made of High Quality MaterialsSold in Pairs
      $18.29
    • (0 reviews)
      # mpn358587986
      GMC P2500 / P3500 5.7L 1985, 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...
      High quality at an affordable priceExpertly made from premium materials
      $11.79
    • (0 reviews)
      # 231116673
      GMC P-Series 1985, Header Flange Kit by Patriot Exhaust®. Patriot precision machined header flange kits are available for many popular engine families. Header flange kits come complete with gaskets and header bolts on most applications....
      Precision machined flangeBuilt of High quality materials
      $44.03 - $61.86
    • (0 reviews)
      # 652783952
      GMC P-Series 1985, 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)
      # 652442896
      GMC P-Series 1985, 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)
      # 652527818
      GMC P-Series 1985, 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)
      # 652188873
      GMC P2500 / P3500 5.7L 1985, 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...
      Modified engines have hotter exhaustBetter materials help seal poorly-mating flanges better.
      $35.11
    • (0 reviews)
      # 652412789
      GMC P-Series 1985, 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,...
      Multi-layered for excellent conformability and sealSeals even imperfect flanges
      $33.24 - $35.11
    • (0 reviews)
      # 652769891
      GMC P-Series 1985, Seal-4-Good™ 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
    • (0 reviews)
      # 652784830
      GMC P-Series 1985, XX Carbon™ 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
      $19.02 - $21.77
    • (0 reviews)
      # 652596872
      GMC P-Series 1985, XX Carbon™ 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.
      $21.77
    • (0 reviews)
      # 231116791
      GMC P-Series 1985, Soft Conforming Aluminum Header Gasket Set by ProForm®. Material: Soft Conforming Aluminum. If you're looking for a top-quality upgrade which will enhance the performance of your vehicle and won't cost you an arm and...
      Designed to upgrade your ride's performanceProduced by highly specialized machines to last
      $24.93 - $31.81




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    1985 GMC P-Series Performance Headers Reviews

    Average rating:  4  4 - 1 review
    4 of 5
    Dynatech® - Polished Street Rod Small Block Block Hugger Exhaust Header
    I Have a 1967 El Camino, I was not able to use these on mine for some reason the collector would hit my cross member on both sides. I have a Chevy 350 motor. I wish they would fit, they look great.
    Posted by Don Coulter (Corona, CA) / December 28, 20161967 Chevy El Camino
    Was this review helpful for you? Yes
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