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Silverado & Sierra Twin Turbo Kit| 1999-06 (4.8L, 5.3L, 6.0L)

CHF 2,962.00
Item is in stockHurry! Low inventoryItem is out of stock Item is unavailable
Quantity
Notes

SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY

*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314

Frequently Asked Questions


Brand: Speed Engineering
SKU: 32-TwinKit-9906

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.

**All Speed Engineering products Cannot be Exchanged or Returned**



Our History

For 23 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.

Our Florida Locations

Kissimmee • Orlando • Tampa

Testimonials

We let our reviews speak for themselves.

4.9 average
914 reviews

Kissimmee

Orlando

Tampa

Great service at a fair price. I highly recommend them for all your performance needs. They have the know how to complete that project.

Donald Berry

Happy Customer

Google Review

Dropped off my 2022 Subaru WRX for Exhaust, spoiler, aeroflow dynamic kit, and they killed it. Quality work and amazing customer service. Speedzone gets you right.

Edward Roldan

Happy Customer

Google Review

They gave me the best price I could find after shopping around for a while. They are well informed and familiar with the products they sell, great communication and quick responses. I would no doubt purchase from them again. Solid company. Recommended. A+

Paul K

A Month Ago

Google Review

Came based on a work buddies recommendation. I was late by 30 minutes, confused my appointment time. But, 10/10 would come back. Came for a Downpipe and midpipe install. Not only was the gentleman accommodating, He ran into some issues, staff helped me out and pointed me into the right direction and got me going! They got my business and wouldn’t go anywhere else again!

Kiyo Gallimore

Verified Customer

Google Review

They Take Great Care Of Their Customers and Their Rates Are Better Than The Competition! They Also Respond Quickly And Have A Great Assortment Of Parts!

Jad

6 months Ago

Google Review

Absolutely love the customer service that you get with Speedzone Performance! All my questions are always answered in such a timely manner and this a big PLUS because I live out of Florida and for them to be on top of answering all my questions in such a way means a lot. Thank you all for the amazing customer service.

Daisy Vargas

Verified Customer

Google Review

My favorite place to go for anything car related, they have anything you could imagine & more. The people who work here are the coolest and most helpful people I’ve yet to meet at a car shop. They also don’t try to force sales on you and they genuinely help you with what you’re looking for, 100/10 shop!

Stephanie Trinidad

Loyal Customer

Google Review

The best of best, they are so nicely and kind people, yankee and billy more than the ones that runs the store they are a friend to everyone who walks in the store, very patient gets everyone what they need, everything you ask them they’ll answer your questions the best as possible, I love shopping there. They have the best prices, anything as car need you’ll find it there big shout-out to Yankee for being an amazing person and most important as a friend!! I love Speedzone!

Jansel Castillo

Loyal Customer

Google Review