Silverado & Sierra Twin Turbo Kit 1999-06 (4.8L, 5.3L, 6.0L)
Intercooler
Twin Turbo Exhaust
Intercooler Silverado & Sierra
 5.3L
Speed Engineering Silverado & Sierra Twin Turbo Kit | 1999-2006 (4.8L, 5.3L, 6.0L)
Speed Engineering Silverado & Sierra Twin Turbo Kit | 1999-2006 (4.8L, 5.3L, 6.0L)

Speed Engineering Silverado & Sierra Twin Turbo Kit 1999-2006 (4.8L, 5.3L, 6.0L)

Regular price $3,299.99 Save $-3,299.99
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SKU: 32-TwinKit-9906

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Speed Engineering turbo systems: Our goal with these kits was to make the most complete, best fitting, most versatile turbo system on the market at an affordable price. Most turbo kits on the market today are either extremely expensive, or really cheap essentially getting what you pay for. Our turbo systems focus on just that a quality well-built kit, without the price tag of a one off turbo system. Our systems utilize Precision 62mm turbos, Air-To-Air intercooler, and your choice of an exhaust connection type.

Our kit has been tested on several applications. The first application was a 6.0L LQ4 stock engine with a 224 camshaft. On our Mustang 1100MD dyno it made 495rwhp on 5lbs of boost. Our second application was a 4.8L, which was also a stock engine minus a 224 cam swap. It made 710rwhp on 18lbs. Our third application was a built 6.0L with heads/cam. It went on to make 750rwhp on 15lbs, and 800rwhp on 18lbs.

One of the nice features with the sizing of our kit is the ability to run a stock displacement engine with quick spool time. At the same time have a ton of potential to crank the kit up if desired. If you choose to purchase one of our kits we can promise you will not find a better fitting, quality built, budget turbo system for your vehicle.

Features include:

  • 62mm Precision Turbochargers with 62mm Turbines T3 Flange .85A/R
  • Full 3" Exhaust Tubing
  • 1 3/4" Forward Facing Turbo Headers
  • Twin 2.5" Cold Side Piping into Single 3" Engine Inlet
  • Air-To-Air Intercooler System
  • 50mm Blow-Off Valves
  • 44mm Wastegates
  • .85 AR Exhaust Housing
  • Stainless Heat Shields
  • Black Anodized AN Fittings/lines
  • All V-Bands & Clamps
  • Vacuum Manifold and Hoses
  • Air Filters
  • IAT Sensor & Harness
  • Oil & Water Billet Adapter Plates
  • Optional Y-Pipe to Factory Exhaust or True Dual X-Pipe Kit
  • 1 Year Manufacturing Warranty

Note: Our kit does not include a fuel system or tuning.

Note: Our kit will require the use of the 2003-13 large 6.0L radiator and electric fans. (Matching Electric fans to our radiators can be found at a good price on eBay or Amazon)

Note: Our kit does not provide any drive-train warranty of any sort.

Note: Standard 6.0L trucks do not have a factory Y-Pipe. Exhaust fabrication will be needed unless our true dual exhaust is purchased.

Vehicle Applications:

  • 1999-2006 Chevrolet Silverado 2WD/4WD (4.8L, 5.3L, 6.0L)
  • 1999-2006 GMC Sierra 2WD/4WD (4.8L, 5.3L, 6.0L)

(Warning) This is a RACE ONLY product manufactured and sold for installation on vehicles to be used solely for competition purposes. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. If you install this part on your vehicle and use the vehicle on a public road or highway, you will violate the Clean Air Act 203(a)(3), 42 U.S.C, 7522(a)(3) and may be subject to personal civil or criminal liability.

Customer Reviews

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BigRed (J Hardy)
Very pleased. And it makes tons of Power

Just installed this kit on my 2006 GMC Sierra. Fitment was excellent, went together pretty easy. Only suggestion I would make to other guys is to relocate your battery just for more room so u can run full size air filter on that turbo also! The truck is very streetable and could easily be a daily driver still
Thank you Speed Engineering everything as advertised.