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GMC R3500 Headers

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$394.10 List Price $640.51 Save $246.41 Availability: In Stock
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GIBSON – PERFORMANCE HEADERS

Gibson’s Performance Headers are proven to increase horsepower by an impressive 20 hp and torque by as much as 30 lbs – a significant boost whether you’re on the track or the street. Gibson is known as the leading manufacturer of street-legal, high performance exhaust systems for trucks, SUVs, diesels, off-road vehicles and RVs.

  • Designed to replace factory exhaust manifold and utilize factory cross-over pipes
  • Streamlines air flow
  • Thick, 3/8” heavy-duty laser-cut flanges will not warp or leak - guaranteed
  • Choose ceramic coat, nickel-plated or stainless steel finish
  • Backed by a lifetime warranty
  • No welding required – easy to bolt-on
  • Engine lasts longer because it operates at cooler temperatures
  • Improved efficiency also directly improves gas mileage
  • Proven to improve torque by up to 30 lbs and horsepower up to 20 hp
  • Direct fit by vehicle year, make and model
  • Designed and manufactured in the USA
  • SKU#: G27GP100
  • Brand: Gibson
  • Fit Note: RWD
  • Color/Finish: Chrome
  • Emissions: 50-state legal
  • Product Fit: Direct fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 2-3 business days
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Fits the following GMC R3500 Years:
  • 1990-1991 | 8 Cyl 5.7L | SLE
  • 1988-1991 | 8 Cyl 5.7L | Base
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Rating: (see review/s)

"Im happy with the headers I got they work great. But Im looking to see how do I clean them" posted by: on November 3, 2013

$460.60 List Price $1,121.42 Save $660.82 Availability: In Stock
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HTC HEDDERS, METALLIC-CERAMIC COATED EXHAUST HEADER -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; Tube Size 1.75 in., Coll. Size 3 in., Without Smog Injection Or Injection Heads, Modification To Stock Exhaust Required To Retain Catalytic Converter, Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine, Modification To Stock Exhaust Required To Retain Catalytic Converter, Must Use Factory Hardware And Mounts, Some 502 Engines May Need Flange Modification For Head Bolt
  • SKU#: H5669116
  • Brand: Hedman
  • Fit Note: Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine, Elite Replacement Gasket PN[27550]
  • Color/Finish: Metallic ceramic coated
  • Emissions: 49-state legal - no CA shipments
  • Product Fit: Direct fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 7-8 business days
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Fits the following GMC R3500 Years:
  • 1987 | 8 Cyl 7.4L | Base, High Sierra, Sierra Classic
$153.59 List Price $181.24 Save $27.65 Availability: In Stock
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FLOWTECH I STANDARD FULL-LENGTH HEADERS, SATIN BLACK HI-TEMPERATURE PAINTED -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 1.625 in. tube diameter, 16-gauge tube wall thickness, 3 in. weld-on collector, standard head flange; All mounting hardware such as bolts, nuts, and premium gasket are included; Full-length style; Round head port; These headers are precision-engineered and leak-tested to provide the maximum performance and fuel efficiency of your engine; Formed from specially selected 0.060 cold roll flash controlled tubing with high quality electrostatically-applied satin black paint finish; They feature Flowtech's exclusive, thick, and mandrel-formed power plenum collector; All ports are precisely fitted and finished with sturdy and leaf-proof o-ringed port seals; Must modify stock exhaust to retain catalytic converters; Applications with oxygen sensor use reducer part number 10105 for 2.5 in. 3-bolt flange or part number 10110 for 3 in. 3-bolt flange; Will not fit angle plug heads; Fits with OE factory equipped style transmission only; Catalytic converter compatible y-pipe available separately.
  • SKU#: F3111504
  • Brand: Flowtech
  • Fit Note: Standard Cab Pickup, Automatic Transmission, Without A.I.R. Tubes, With Oxygen Sensor- Use Reducer PN[10105FLT] For 2.5 in. Flange Or PN[10110FLT] For 3 in., Standard Cab Pickup, Standard Transmission, Without A.I.R. Tubes, With Oxygen Sensor- Use Reducer PN[10105FLT] For 2.5 in. Flange Or PN[10110FLT] For 3 in.
  • Color/Finish: Black
  • Emissions: 49-state legal - no CA shipments
  • Product Fit: Minor Modifications
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 business days
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Fits the following GMC R3500 Years:
  • 1988-1989 | 8 Cyl 5.7L | Base, High Sierra, Sierra Classic
$377.55 List Price $572.70 Save $195.15 Availability: In Stock
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PATRIOT SPECIFIC FIT HEADERS, METALLIC CERAMIC-COATED, SET OF 2 -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 1.625 in. tube diameter, 3 in. collector; Includes gaskets, hardware, collector reducers, and installation instructions; Full-length style; Oval port shape; Features ceramic coated tubing that is corrosion and rust resistant; Lowers under hood temperatures for more power and extended product life; Easy to maintain; It has thick machined flanges for great seal; Its high flow mandrel-bent mild steel tubing provides greater horsepower and torque; Fits D-port cylinder heads including ZZ4 crate engines; Will fit most angle plug heads; Non-catalytic converter equipped; Reducers available with oxygen sensor fitting; Installation requires left side A/C bracket part number H7608; 1979 and later vehicles with short compressors can use the stock bracket.
  • SKU#: P1RH80481
  • Brand: Patriot
  • Emissions: 49-state legal - no CA shipments
  • Product Fit: Direct fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 2-3 business days
 
Fits the following GMC R3500 Years:
  • 1987 | 8 Cyl 7.4L | Base, High Sierra, Sierra Classic
$271.21 List Price $320.03 Save $48.82 Availability: In Stock
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HOOKER COMPETITION FULL-LENGTH HEADERS, BLACK HI-TEMPERATURE PAINT -- 1.625 in. tube diameter, 16-gauge tube wall thickness, 2.5 in. flange collector, 8 in. collector length, 0.3125 in. standard head flange; They include all the necessary hardware for complete installation; Sap shape port; Full-length style; They feature tuned-length primary tubes for maximum exhaust scavenging and velocity, light but sturdy 16-gauge mild steel mandrel-bent tubing for smooth exhaust flow, long transition collector for decreased back pressure, and machined flanges for a perfect seal; Designed for optimal performance and industry's best welds for durability; Exhaust systems can also be fabricated using either Hooker Super Competition Aero Chamber mufflers, Maximum Flow mufflers, Super Competition turbo mufflers, Competition turbo mufflers or header type Hooker mufflers; Equipped with a fitting to accept the stock oxygen sensor; With Hooker's limited warranty.
  • SKU#: H262462
  • Brand: Hooker
  • Fit Note: Standard Cab Pickup, Automatic Transmission, Column Shifter, Legal Only For Off-Highway/Racing Use
  • Color/Finish: Black
  • Emissions: For off road/track use
  • Product Fit: Direct fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 business days
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Fits the following GMC R3500 Years:
  • 1988-1989 | 8 Cyl 5.7L | Base, High Sierra, Sierra Classic