Home Garage Best Mods for 4.8 Silverado and Sierra Trucks: LS Performance Upgrades

Best Mods for 4.8 Silverado and Sierra Trucks: LS Performance Upgrades

March 11, 2023

Photo courtesy <a href="https://www.flickr.com/photos/nanpalmero/6166746545/" rel="nofollow">Nan Palmero</a> via flickr. Used under a CC BY 2.0 license. — Photo courtesy Nan Palmero via flickr. Used under a CC BY 2.0 license.

When I bought my 2011 Silverado, I wanted the 4.8L engine and 4L60E. Both were tried and true. The 4.8L does not have the active fuel management, which I did not want. The 4.8 does need a little help in the power department. It’s poky, slow. What are the best mods for 4.8 Silverado trucks?

Popular 4.8L Performance Parts on Amazon

SaleBestseller No. 1

AFM/DFM Disabler, Active Fuel Management Delete AFM Disable Device RA003 Compatible with V6 V8 GM Motors (Chevy Silverado, GMC Sierra, GMC Yukon, Cadillac Escalade, Chevy Tahoe etc)4.3L 5.3L 6.0L 6.2L

????【Enhanced Engine Performance】Our AFM Disabler deactivates Active Fuel Management (AFM) to enable your vehicle to operate on all cylinders at all times, ensuring a smoother and more consistent driving experience.
????【Compatible with a Wide Range of V6 & V8 General Motors Models】Designed to fit a variety of General Motors' V6 and V8 engines equipped with AFM technology, . Note: This AFM/DFM Disabler is NOT currently compatible with 2019+ Silverado and Sierra models equipped with 5.3L / 6.2L motors and 10-speed transmissions.
????【Easy Plug-and-Play Installation】Effortlessly upgrade your vehicle with our user-friendly design. Simply plug the AFM Disabler into your vehicle’s OBD-II port for an instant performance boost without the need for complex tools or professional assistance.
????【Maintains Vehicle Integrity】Enjoy the benefits of full engine power without compromising your vehicle’s factory settings. Our AFM disabler is non-invasive, fully reversible, and does not leave any trace once removed, preserving your vehicle’s warranty and resale value.
????【Reliable and Durable】Built with high-quality materials to ensure durability and longevity, our AFM Disabler is a reliable investment for your vehicle. Comes with dedicated customer support and a satisfaction guarantee to assist with any queries or concerns.

Bestseller No. 2

ESEWALAS Aluminum Alloy Battery Hold Down Bracket,Car Battery Holder Kit with 10in J bolts,Car Battery Lock Down,Battery Tie Down Bracket,Universal Bracket Hold Lock Accessories (Red)

[Package Includes] The package includes 1 battery mounting bracket,2 pcs 10 inch J-shaped hooks, 2 sets of accessories (suitable for different installation types), 2 hexagonal and wing nuts, 2 rubber protective sleeves, 2 protective rubber washers, 2 spring lock washers, and 2 flat washers.
[Product Size] The total length of our battery mounting bracket is 8.58 ", the distance between bolt centers is 7.48", and the bolt length is 10 ". For excessively long bolts, the hook can be appropriately cut.
[High Quality and Durable]The battery mounting bracket is made of high-quality aluminum alloy, which is sturdy, rust proof, and antioxidant. Excellent spraying technology makes its surface smoother and cleaner. Enhance corrosion resistance and rust prevention. The matching bolts are made of high-quality stainless steel, durable, sturdy, and can be used for a long time.
[Applicable] The pool bracket kit is usually suitable for most groups of 21, 21R, 22F, 22HF, 22R, 24, 24F, 24H, 24R, 24T, 25, 26, 26R, 26/70 27, 27F, 27H, 28, 29H, 30H, 31, 31A, 31T, 33, 34, 34R, 34/78, 35, 40R, 41, 42, 43, 46, 47, H6 (48), H8 (49), 85, 86, 90, 91, 92, 93, 94R, 95R, 96R, 97R, 98R, 99, 124, and 140R batteries.
[Reminder] The battery fixing device aims to ensure that the battery is securely fixed, but this type of fastening device is not suitable for certain battery surfaces between raised ventilation caps. Please measure the diameter of the primary battery before purchasing to avoid purchasing products with incorrect dimensions.

SaleBestseller No. 3

BELZAR AFM Disabler Compatible with Chevrolet Silverado 1500 V8 5.3L 2010-2018 Models and GM V6 V8 Engines in Various Vehicles, Trucks, and SUVs

ENHANCED ENGINE PERFORMANCE: BELZAR AFM/DFM Disabler is engineered to deactivate the Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) systems in your V6 or V8 GM vehicle, guaranteeing continuous operation in full-cylinder mode. (Disables 4-cylinder mode)
PLUG-AND-PLAY INSTALLATION: Simply plug the AFM/DFM Disabler into your onboard OBD-II port, and it starts working immediately. No need for reprogramming the factory ECU, and rest assured, it won't void the manufacturer's warranty.
COMPATIBILITY ASSURANCE: Before making your purchase, check the compatibility to ensure a seamless integration. While the AFM/DFM Disabler is compatible with most GM V6 and V8 engines, it's essential to note that it does not support 2019+ Silverado and Sierra models equipped with the 5.3L/3.6L engine and 10-speed transmission, as well as 2022 Refresh truck or SUV models.
USER-FRIENDLY OPERATION: The device features intuitive indicator lights that flash sequentially upon insertion, settling into a steady one-light display to signify a connected and operational status. It's a user-friendly solution, providing real-time feedback for peace of mind. (Unplug the AFM device if it will not be used for a long time)
CUSTOMER SERVICE: The customer service team is online 24/7, ready to answer any questions you may have about the product. We promise to provide you with up to one year free return and exchange service (non-man-made damage) to ensure that you enjoy a worry-free shopping experience in the process.

Bestseller No. 4

Aoerzn Premium Tailgate Handle Latch and Bezel Trim with Rod Clips, Fits for 1999-2007 Chevy Silverado GMC Sierra 1500 2500 3500, Replaces# 15997911, 15228539, 15228540, 15228541

THE AOERZN ADVANTAGE: Join our customer groups, and enjoy more excellent auto parts. Cooperate happily!
HIGH-QUALITY: Aoerzn tail gate handle and tailgate handle bezel is made of high quality plastic. Excellent and effective. Long service life. Easy to install and uninstall. This quality tail gate handle and bezel can save your time! Excellent technology makes its surface more smooth and clean. Enhance corrosion resistance and rust resistance.
FITS FOR: 1999-2006 Chevy Silverado 1500, 2001-2006 Silverado 1500HD 2500HD 3500, 1999-2004 Silverado 2500, 2007 Silverado 1500 1500HD 2500HD 3500 Classic, 1999-2006 GMC Sierra 1500, 01-06 Sierra 1500HD 2500HD 3500, 99-04 Sierra 2500, 07 Sierra 1500 1500HD 2500HD 3500 Classic.
REPLACE OE NUMBER: 15997911, 15228539, 15228540, 15228541, GM1916102, GM1915105, 15188001, 77488.
YOU WILL GET: 1Set Tailgate handle latch and bezel trim with rod clips. I believe this product can fully meet your requirements. Welcome guide, high quality assurance and friendly customer service.

SaleBestseller No. 5

4 Inch Performance Cold Air Intake Filter Kit with Heat Shield for 99-06 GMC/Chevy V8 4.8L 5.3L 6.0L Silverado 1500 2500 3500 (Black & Black)

【Unique】The kit includes a intake tube and steel heat shield that features a durable carbon-black powder coating for long lasting good looks
Cold air intake kit fit for 2002-2006 Avalanche 1500 & 1999-2006 Fit for Silverado 1500 & 01 02 03 05 06 Fit for Silverado 1500 HD & 1999-2006 Fit for Silverado 2500 & 2001-2006 Fit for Silverado 2500 HD/3500 & 2000-2006 Fit for Suburban 1500/2500/Tahoe & 2007 Fit for Silverado 1500 Classic/1500&2500 HD Classic(Please MATCH your vehicle on the left top)
Fit for GMC 1999-2006 Sierra 1500 & 2007 Sierra 1500 Classic & 2001 2002 2003 2005 2006 Sierra 1500 HD & 1999-2004 Sierra 2500 & 2001-2006 Sierra 2500 HD & 2000-2006 Fit for Yukon & 2002-2006 Fit for Yukon XL 1500/2500
OBuyTo intake systems are designed to dramatically reduce intake restriction as they smooth and straighten air flow. The kit replaces your vehicle's restrictive factory air filter and air intake housing.Lasts up to 100,000 miles before service is required (depending on driving conditions)
Improves Up to 95% Filtration Efficiency; Designed to increasing 5-10% horsepower & 6-10% torque, and creating an attractive intake noise. No additional parts will be needed for installation after you purchase this kit，Easy to install performance

Bestseller No. 6

PEDAL COMMANDER for GMC Sierra 2007-2018 Throttle Response Controller - Fits: 1500, 2500HD, 3500HD, Base, SLE, SLT, Denali, Performance Parts & Accessories - PC65

Faster Acceleration: Pedal Commander removes the delay from your electronic gas pedal, allowing your GMC Sierra to accelerate faster, giving your vehicle a night/day difference in performance
36 Adjustable Settings: Equipped with 4 different modes: Eco, City, Sport, and Sport +. Each mode has an additional 36 adjustable settings to fine-tune to your liking, making this a must have GMC Sierra accessory
Eco Mode: The Pedal Commander throttle response controller significantly slows throttle response to improve efficiency
Quick & Easy Installation: Pedal Commander is a simple plug-and-play device that takes only about 10 minutes to install. Now Bluetooth compatible, you can control the unit using our free Pedal Commander app
Will Not Void Your Warranty: Pedal Commander will not void the warranty on your GMC Sierra or leave any trace behind on your ECU

Bestseller No. 7

Power Stop S5030 Rear Pair of High-Temp Red Powder Coated Calipers For Cadillac Escalade Chevy Avalanche Silverado 1500 Suburban 1500 Tahoe Sierra 1500 Yukon XL 1500 Yukon Denali

Electrostatic High-Heat Powder Coat helps to resist rust and corrosion
High temperature EPDM rubber dust boots and premium silicone lubricant are used for a smoother operation and an extended life in extreme conditions
New seals, caliper guide pins, dust boots, bleeder screws, stainless-steel brake pad abutment clips and mounting brackets
All calipers are powder coated, assembled, and tested in our Chicago, IL facility
See below for information on our caliper core rebate program, or find the form on our website!

Bestseller No. 8

JDMSPEED High Performance Spark Plug Ignition Wire For 2000-2009 CHEVY GMC V8

100% New Construction
10.2mm Spiral Wound Design
One Year Warranty
UltraLow Resistance KEVLAR Core
Ultra High Strength/High Temp. Silicone Boots and Sleeve

Bestseller No. 9

Fleece Performance Engineering -GM-ALO-37 Gm All Lights On (2003-2007 Classic)

Package Dimensions - 3.0 " L X 3.0 " W X 1.0 " H
Package Weight : 1.0 Lbs
Package Quantity : 1
Product Type : Auto Part

Bestseller No. 10

3" Performance Parts & Miscellaneous Accessory Compatible with Chevy Silverado GMC Sierra 2004.5-2010 LLY, LBZ, and LMM 6.6L Duramax Diesel Engines OE GMCA424,117000500 -Smooth Surface Black

117000500 Compatible Models : Compatible With 2004.5-2010 GMC / Chevy Duramax Diesel 6.6L Trucks and LLY, LBZ, LMM 6.6L 15468
High Quality : 3" Stainless Steel Construction,thermal Coated & Heat Wrapped，Oxidation resistant, high strength，High temperature resistant.OE GMCA424
Direct Replacement : It meets or exceeds the oem standard, and has been tested in the factory, perfectly matched with the original car, and can be installed directly.
VERIFY MODEL : Please check pictures, vehicle compatibility, manufacturer part number and product description before buying.
Buy With Confidence : If the part fails or breaks, please contact us for replacement. Save hundreds of dollars off of dealer prices by purchasing this part and taking advantage of our warranty.Price concessions and guaranteed, no need to worry about quality problems，and Thank you for being my client

Affiliate links / Images from Amazon Product Advertising API

The 4.8-liter V-8 engine found in the Chevy Silverado is ideal for a range of modifications. This engine is reliable, efficient, and packed with potential for power.

With plenty of aftermarket parts available to enhance performance, you can easily build up your stock 4.8-liter into something even more impressive. Whether you’re in search of additional torque for hauling or gaining faster acceleration around the track, there are many mods to consider that will make your Silverado faster, stronger, and meaner than ever before.

Is the 4.8 Vortec a good engine?

The 4.8-liter Silverado pickup truck is a full-size vehicle that was manufactured by Chevrolet as part of its Silverado lineup. It was available as a model from 1999 until 2018 and has been both praised and criticized for its reliability, affordability and performance depending on the make and model.

For drivers who are looking to customize their rides or increase their vehicle’s power output, there are many aftermarket modifications you can make to your 4.8 liter Silverado to get the performance you desire without compromising safety or reliability.

Some popular modifications for the 4.8 are cold air intakes which increase horsepower by allowing more air into your engine, exhaust kits which reduce backpressure from your exhaust pipes and increase your automobile’s torque, tuning systems which help tune the engine for optimal performance, suspension groups that give you better handling during sharp turns or when accelerating heavily and other specialized parts designed for the specific make/model of truck like bigger rims or stronger brakes.

All these modifications will drastically improve your driving experience while keeping up with safety standards required by law enforcement agencies worldwide so be sure to check them out before taking on any DIY projects!

How to get more power out of a 4.8 Vortec

When it comes to getting the most out of your 4.8 Silverado, performance mods are essential to unlocking your vehicle’s full potential. Here are some of the best performance mods that you can do to get the most out of your engine and enjoy a smoother, more powerful driving experience:

SaleBestseller No. 1

????【Enhanced Engine Performance】Our AFM Disabler deactivates Active Fuel Management (AFM) to enable your vehicle to operate on all cylinders at all times, ensuring a smoother and more consistent driving experience.
????【Compatible with a Wide Range of V6 & V8 General Motors Models】Designed to fit a variety of General Motors' V6 and V8 engines equipped with AFM technology, . Note: This AFM/DFM Disabler is NOT currently compatible with 2019+ Silverado and Sierra models equipped with 5.3L / 6.2L motors and 10-speed transmissions.
????【Easy Plug-and-Play Installation】Effortlessly upgrade your vehicle with our user-friendly design. Simply plug the AFM Disabler into your vehicle’s OBD-II port for an instant performance boost without the need for complex tools or professional assistance.
????【Maintains Vehicle Integrity】Enjoy the benefits of full engine power without compromising your vehicle’s factory settings. Our AFM disabler is non-invasive, fully reversible, and does not leave any trace once removed, preserving your vehicle’s warranty and resale value.
????【Reliable and Durable】Built with high-quality materials to ensure durability and longevity, our AFM Disabler is a reliable investment for your vehicle. Comes with dedicated customer support and a satisfaction guarantee to assist with any queries or concerns.

Bestseller No. 2

ESEWALAS Aluminum Alloy Battery Hold Down Bracket,Car Battery Holder Kit with 10in J bolts,Car Battery Lock Down,Battery Tie Down Bracket,Universal Bracket Hold Lock Accessories (Red)

[Package Includes] The package includes 1 battery mounting bracket,2 pcs 10 inch J-shaped hooks, 2 sets of accessories (suitable for different installation types), 2 hexagonal and wing nuts, 2 rubber protective sleeves, 2 protective rubber washers, 2 spring lock washers, and 2 flat washers.
[Product Size] The total length of our battery mounting bracket is 8.58 ", the distance between bolt centers is 7.48", and the bolt length is 10 ". For excessively long bolts, the hook can be appropriately cut.
[High Quality and Durable]The battery mounting bracket is made of high-quality aluminum alloy, which is sturdy, rust proof, and antioxidant. Excellent spraying technology makes its surface smoother and cleaner. Enhance corrosion resistance and rust prevention. The matching bolts are made of high-quality stainless steel, durable, sturdy, and can be used for a long time.
[Applicable] The pool bracket kit is usually suitable for most groups of 21, 21R, 22F, 22HF, 22R, 24, 24F, 24H, 24R, 24T, 25, 26, 26R, 26/70 27, 27F, 27H, 28, 29H, 30H, 31, 31A, 31T, 33, 34, 34R, 34/78, 35, 40R, 41, 42, 43, 46, 47, H6 (48), H8 (49), 85, 86, 90, 91, 92, 93, 94R, 95R, 96R, 97R, 98R, 99, 124, and 140R batteries.
[Reminder] The battery fixing device aims to ensure that the battery is securely fixed, but this type of fastening device is not suitable for certain battery surfaces between raised ventilation caps. Please measure the diameter of the primary battery before purchasing to avoid purchasing products with incorrect dimensions.

SaleBestseller No. 3

BELZAR AFM Disabler Compatible with Chevrolet Silverado 1500 V8 5.3L 2010-2018 Models and GM V6 V8 Engines in Various Vehicles, Trucks, and SUVs

ENHANCED ENGINE PERFORMANCE: BELZAR AFM/DFM Disabler is engineered to deactivate the Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) systems in your V6 or V8 GM vehicle, guaranteeing continuous operation in full-cylinder mode. (Disables 4-cylinder mode)
PLUG-AND-PLAY INSTALLATION: Simply plug the AFM/DFM Disabler into your onboard OBD-II port, and it starts working immediately. No need for reprogramming the factory ECU, and rest assured, it won't void the manufacturer's warranty.
COMPATIBILITY ASSURANCE: Before making your purchase, check the compatibility to ensure a seamless integration. While the AFM/DFM Disabler is compatible with most GM V6 and V8 engines, it's essential to note that it does not support 2019+ Silverado and Sierra models equipped with the 5.3L/3.6L engine and 10-speed transmission, as well as 2022 Refresh truck or SUV models.
USER-FRIENDLY OPERATION: The device features intuitive indicator lights that flash sequentially upon insertion, settling into a steady one-light display to signify a connected and operational status. It's a user-friendly solution, providing real-time feedback for peace of mind. (Unplug the AFM device if it will not be used for a long time)
CUSTOMER SERVICE: The customer service team is online 24/7, ready to answer any questions you may have about the product. We promise to provide you with up to one year free return and exchange service (non-man-made damage) to ensure that you enjoy a worry-free shopping experience in the process.

Bestseller No. 4

Aoerzn Premium Tailgate Handle Latch and Bezel Trim with Rod Clips, Fits for 1999-2007 Chevy Silverado GMC Sierra 1500 2500 3500, Replaces# 15997911, 15228539, 15228540, 15228541

THE AOERZN ADVANTAGE: Join our customer groups, and enjoy more excellent auto parts. Cooperate happily!
HIGH-QUALITY: Aoerzn tail gate handle and tailgate handle bezel is made of high quality plastic. Excellent and effective. Long service life. Easy to install and uninstall. This quality tail gate handle and bezel can save your time! Excellent technology makes its surface more smooth and clean. Enhance corrosion resistance and rust resistance.
FITS FOR: 1999-2006 Chevy Silverado 1500, 2001-2006 Silverado 1500HD 2500HD 3500, 1999-2004 Silverado 2500, 2007 Silverado 1500 1500HD 2500HD 3500 Classic, 1999-2006 GMC Sierra 1500, 01-06 Sierra 1500HD 2500HD 3500, 99-04 Sierra 2500, 07 Sierra 1500 1500HD 2500HD 3500 Classic.
REPLACE OE NUMBER: 15997911, 15228539, 15228540, 15228541, GM1916102, GM1915105, 15188001, 77488.
YOU WILL GET: 1Set Tailgate handle latch and bezel trim with rod clips. I believe this product can fully meet your requirements. Welcome guide, high quality assurance and friendly customer service.

SaleBestseller No. 5

4 Inch Performance Cold Air Intake Filter Kit with Heat Shield for 99-06 GMC/Chevy V8 4.8L 5.3L 6.0L Silverado 1500 2500 3500 (Black & Black)

【Unique】The kit includes a intake tube and steel heat shield that features a durable carbon-black powder coating for long lasting good looks
Cold air intake kit fit for 2002-2006 Avalanche 1500 & 1999-2006 Fit for Silverado 1500 & 01 02 03 05 06 Fit for Silverado 1500 HD & 1999-2006 Fit for Silverado 2500 & 2001-2006 Fit for Silverado 2500 HD/3500 & 2000-2006 Fit for Suburban 1500/2500/Tahoe & 2007 Fit for Silverado 1500 Classic/1500&2500 HD Classic(Please MATCH your vehicle on the left top)
Fit for GMC 1999-2006 Sierra 1500 & 2007 Sierra 1500 Classic & 2001 2002 2003 2005 2006 Sierra 1500 HD & 1999-2004 Sierra 2500 & 2001-2006 Sierra 2500 HD & 2000-2006 Fit for Yukon & 2002-2006 Fit for Yukon XL 1500/2500
OBuyTo intake systems are designed to dramatically reduce intake restriction as they smooth and straighten air flow. The kit replaces your vehicle's restrictive factory air filter and air intake housing.Lasts up to 100,000 miles before service is required (depending on driving conditions)
Improves Up to 95% Filtration Efficiency; Designed to increasing 5-10% horsepower & 6-10% torque, and creating an attractive intake noise. No additional parts will be needed for installation after you purchase this kit，Easy to install performance

Bestseller No. 6

PEDAL COMMANDER for GMC Sierra 2007-2018 Throttle Response Controller - Fits: 1500, 2500HD, 3500HD, Base, SLE, SLT, Denali, Performance Parts & Accessories - PC65

Faster Acceleration: Pedal Commander removes the delay from your electronic gas pedal, allowing your GMC Sierra to accelerate faster, giving your vehicle a night/day difference in performance
36 Adjustable Settings: Equipped with 4 different modes: Eco, City, Sport, and Sport +. Each mode has an additional 36 adjustable settings to fine-tune to your liking, making this a must have GMC Sierra accessory
Eco Mode: The Pedal Commander throttle response controller significantly slows throttle response to improve efficiency
Quick & Easy Installation: Pedal Commander is a simple plug-and-play device that takes only about 10 minutes to install. Now Bluetooth compatible, you can control the unit using our free Pedal Commander app
Will Not Void Your Warranty: Pedal Commander will not void the warranty on your GMC Sierra or leave any trace behind on your ECU

Bestseller No. 7

Power Stop S5030 Rear Pair of High-Temp Red Powder Coated Calipers For Cadillac Escalade Chevy Avalanche Silverado 1500 Suburban 1500 Tahoe Sierra 1500 Yukon XL 1500 Yukon Denali

Electrostatic High-Heat Powder Coat helps to resist rust and corrosion
High temperature EPDM rubber dust boots and premium silicone lubricant are used for a smoother operation and an extended life in extreme conditions
New seals, caliper guide pins, dust boots, bleeder screws, stainless-steel brake pad abutment clips and mounting brackets
All calipers are powder coated, assembled, and tested in our Chicago, IL facility
See below for information on our caliper core rebate program, or find the form on our website!

Bestseller No. 8

JDMSPEED High Performance Spark Plug Ignition Wire For 2000-2009 CHEVY GMC V8

100% New Construction
10.2mm Spiral Wound Design
One Year Warranty
UltraLow Resistance KEVLAR Core
Ultra High Strength/High Temp. Silicone Boots and Sleeve

Bestseller No. 9

Fleece Performance Engineering -GM-ALO-37 Gm All Lights On (2003-2007 Classic)

Package Dimensions - 3.0 " L X 3.0 " W X 1.0 " H
Package Weight : 1.0 Lbs
Package Quantity : 1
Product Type : Auto Part

Bestseller No. 10

3" Performance Parts & Miscellaneous Accessory Compatible with Chevy Silverado GMC Sierra 2004.5-2010 LLY, LBZ, and LMM 6.6L Duramax Diesel Engines OE GMCA424,117000500 -Smooth Surface Black

117000500 Compatible Models : Compatible With 2004.5-2010 GMC / Chevy Duramax Diesel 6.6L Trucks and LLY, LBZ, LMM 6.6L 15468
High Quality : 3" Stainless Steel Construction,thermal Coated & Heat Wrapped，Oxidation resistant, high strength，High temperature resistant.OE GMCA424
Direct Replacement : It meets or exceeds the oem standard, and has been tested in the factory, perfectly matched with the original car, and can be installed directly.
VERIFY MODEL : Please check pictures, vehicle compatibility, manufacturer part number and product description before buying.
Buy With Confidence : If the part fails or breaks, please contact us for replacement. Save hundreds of dollars off of dealer prices by purchasing this part and taking advantage of our warranty.Price concessions and guaranteed, no need to worry about quality problems，and Thank you for being my client

Affiliate links / Images from Amazon Product Advertising API

Tuning and Software Upgrades – Tuning and software upgrades are essential for unlocking more horsepower and torque from your engine. A good tuner can greatly improve acceleration, response time, and overall driving experience when it’s properly installed. Many people also opt for cold air intakes or exhaust systems that increase airflow for a performance boost.

LR4 4.8 turbo kit – Forced induction improvements provide an even bigger power lift than a custom tune alone. Installing an appropriately-sized supercharger or turbocharger system can significantly increase your vehicle’s power output, especially if you choose a system designed specifically for the 4.8 Silverado engine model.

Pros and Cons of LR4 4.8 performance upgrades

When it comes to modifying the 4.8-liter engine in your Silverado, there are several changes to consider – each with its own pros and cons. Understand the limitations of a 4.8-liter engine and decide which modifications work best for your goals before you spend money on upgrades.

LR4 4.8 heads: Depending on the cylinder head used, airflow can improve and lead to a more efficient engine. But it may reduce gas mileage due to increased pump losses and this is something that must be taken into consideration when optimizing the 4.8L V-8 in your Silverado.

Cold Air Intake System: Adding a cold air intake on your 4.8L Vortec provides a denser air charge for more power but it also creates additional heat that the factory injectors weren’t designed to manage, negating some of the advantages gained from increased air flow.

Exhaust System: A good quality exhaust system for a 4.8L provides many benefits in terms of improved horsepower, torque and fuel economy as well as reduced underhood temperatures and better sound control than stock equipment offers up. An improperly tuned exhaust however, can result in lost power or even damage to other components due to increased back pressure from excessive exhaust gases not clearing out fast enough from cylinders.

4.8 LR4 Cam kit: Considerable gains can be achieved by installing a performance camshaft but these require custom tuning so they don’t affect driveability or emissions adversely while providing maximum benefit. Without a professional tune up an aftermarket camshaft could cause pre-ignition or knocking which will definitely reduce lifespan of moving parts over time – so only experienced users should attempt fitting a high performance camshaft.

SaleBestseller No. 1

????【Enhanced Engine Performance】Our AFM Disabler deactivates Active Fuel Management (AFM) to enable your vehicle to operate on all cylinders at all times, ensuring a smoother and more consistent driving experience.
????【Compatible with a Wide Range of V6 & V8 General Motors Models】Designed to fit a variety of General Motors' V6 and V8 engines equipped with AFM technology, . Note: This AFM/DFM Disabler is NOT currently compatible with 2019+ Silverado and Sierra models equipped with 5.3L / 6.2L motors and 10-speed transmissions.
????【Easy Plug-and-Play Installation】Effortlessly upgrade your vehicle with our user-friendly design. Simply plug the AFM Disabler into your vehicle’s OBD-II port for an instant performance boost without the need for complex tools or professional assistance.
????【Maintains Vehicle Integrity】Enjoy the benefits of full engine power without compromising your vehicle’s factory settings. Our AFM disabler is non-invasive, fully reversible, and does not leave any trace once removed, preserving your vehicle’s warranty and resale value.
????【Reliable and Durable】Built with high-quality materials to ensure durability and longevity, our AFM Disabler is a reliable investment for your vehicle. Comes with dedicated customer support and a satisfaction guarantee to assist with any queries or concerns.

Bestseller No. 2

ESEWALAS Aluminum Alloy Battery Hold Down Bracket,Car Battery Holder Kit with 10in J bolts,Car Battery Lock Down,Battery Tie Down Bracket,Universal Bracket Hold Lock Accessories (Red)

[Package Includes] The package includes 1 battery mounting bracket,2 pcs 10 inch J-shaped hooks, 2 sets of accessories (suitable for different installation types), 2 hexagonal and wing nuts, 2 rubber protective sleeves, 2 protective rubber washers, 2 spring lock washers, and 2 flat washers.
[Product Size] The total length of our battery mounting bracket is 8.58 ", the distance between bolt centers is 7.48", and the bolt length is 10 ". For excessively long bolts, the hook can be appropriately cut.
[High Quality and Durable]The battery mounting bracket is made of high-quality aluminum alloy, which is sturdy, rust proof, and antioxidant. Excellent spraying technology makes its surface smoother and cleaner. Enhance corrosion resistance and rust prevention. The matching bolts are made of high-quality stainless steel, durable, sturdy, and can be used for a long time.
[Applicable] The pool bracket kit is usually suitable for most groups of 21, 21R, 22F, 22HF, 22R, 24, 24F, 24H, 24R, 24T, 25, 26, 26R, 26/70 27, 27F, 27H, 28, 29H, 30H, 31, 31A, 31T, 33, 34, 34R, 34/78, 35, 40R, 41, 42, 43, 46, 47, H6 (48), H8 (49), 85, 86, 90, 91, 92, 93, 94R, 95R, 96R, 97R, 98R, 99, 124, and 140R batteries.
[Reminder] The battery fixing device aims to ensure that the battery is securely fixed, but this type of fastening device is not suitable for certain battery surfaces between raised ventilation caps. Please measure the diameter of the primary battery before purchasing to avoid purchasing products with incorrect dimensions.

SaleBestseller No. 3

BELZAR AFM Disabler Compatible with Chevrolet Silverado 1500 V8 5.3L 2010-2018 Models and GM V6 V8 Engines in Various Vehicles, Trucks, and SUVs

ENHANCED ENGINE PERFORMANCE: BELZAR AFM/DFM Disabler is engineered to deactivate the Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) systems in your V6 or V8 GM vehicle, guaranteeing continuous operation in full-cylinder mode. (Disables 4-cylinder mode)
PLUG-AND-PLAY INSTALLATION: Simply plug the AFM/DFM Disabler into your onboard OBD-II port, and it starts working immediately. No need for reprogramming the factory ECU, and rest assured, it won't void the manufacturer's warranty.
COMPATIBILITY ASSURANCE: Before making your purchase, check the compatibility to ensure a seamless integration. While the AFM/DFM Disabler is compatible with most GM V6 and V8 engines, it's essential to note that it does not support 2019+ Silverado and Sierra models equipped with the 5.3L/3.6L engine and 10-speed transmission, as well as 2022 Refresh truck or SUV models.
USER-FRIENDLY OPERATION: The device features intuitive indicator lights that flash sequentially upon insertion, settling into a steady one-light display to signify a connected and operational status. It's a user-friendly solution, providing real-time feedback for peace of mind. (Unplug the AFM device if it will not be used for a long time)
CUSTOMER SERVICE: The customer service team is online 24/7, ready to answer any questions you may have about the product. We promise to provide you with up to one year free return and exchange service (non-man-made damage) to ensure that you enjoy a worry-free shopping experience in the process.

Bestseller No. 4

Aoerzn Premium Tailgate Handle Latch and Bezel Trim with Rod Clips, Fits for 1999-2007 Chevy Silverado GMC Sierra 1500 2500 3500, Replaces# 15997911, 15228539, 15228540, 15228541

THE AOERZN ADVANTAGE: Join our customer groups, and enjoy more excellent auto parts. Cooperate happily!
HIGH-QUALITY: Aoerzn tail gate handle and tailgate handle bezel is made of high quality plastic. Excellent and effective. Long service life. Easy to install and uninstall. This quality tail gate handle and bezel can save your time! Excellent technology makes its surface more smooth and clean. Enhance corrosion resistance and rust resistance.
FITS FOR: 1999-2006 Chevy Silverado 1500, 2001-2006 Silverado 1500HD 2500HD 3500, 1999-2004 Silverado 2500, 2007 Silverado 1500 1500HD 2500HD 3500 Classic, 1999-2006 GMC Sierra 1500, 01-06 Sierra 1500HD 2500HD 3500, 99-04 Sierra 2500, 07 Sierra 1500 1500HD 2500HD 3500 Classic.
REPLACE OE NUMBER: 15997911, 15228539, 15228540, 15228541, GM1916102, GM1915105, 15188001, 77488.
YOU WILL GET: 1Set Tailgate handle latch and bezel trim with rod clips. I believe this product can fully meet your requirements. Welcome guide, high quality assurance and friendly customer service.

SaleBestseller No. 5

4 Inch Performance Cold Air Intake Filter Kit with Heat Shield for 99-06 GMC/Chevy V8 4.8L 5.3L 6.0L Silverado 1500 2500 3500 (Black & Black)

【Unique】The kit includes a intake tube and steel heat shield that features a durable carbon-black powder coating for long lasting good looks
Cold air intake kit fit for 2002-2006 Avalanche 1500 & 1999-2006 Fit for Silverado 1500 & 01 02 03 05 06 Fit for Silverado 1500 HD & 1999-2006 Fit for Silverado 2500 & 2001-2006 Fit for Silverado 2500 HD/3500 & 2000-2006 Fit for Suburban 1500/2500/Tahoe & 2007 Fit for Silverado 1500 Classic/1500&2500 HD Classic(Please MATCH your vehicle on the left top)
Fit for GMC 1999-2006 Sierra 1500 & 2007 Sierra 1500 Classic & 2001 2002 2003 2005 2006 Sierra 1500 HD & 1999-2004 Sierra 2500 & 2001-2006 Sierra 2500 HD & 2000-2006 Fit for Yukon & 2002-2006 Fit for Yukon XL 1500/2500
OBuyTo intake systems are designed to dramatically reduce intake restriction as they smooth and straighten air flow. The kit replaces your vehicle's restrictive factory air filter and air intake housing.Lasts up to 100,000 miles before service is required (depending on driving conditions)
Improves Up to 95% Filtration Efficiency; Designed to increasing 5-10% horsepower & 6-10% torque, and creating an attractive intake noise. No additional parts will be needed for installation after you purchase this kit，Easy to install performance

Bestseller No. 6

PEDAL COMMANDER for GMC Sierra 2007-2018 Throttle Response Controller - Fits: 1500, 2500HD, 3500HD, Base, SLE, SLT, Denali, Performance Parts & Accessories - PC65

Faster Acceleration: Pedal Commander removes the delay from your electronic gas pedal, allowing your GMC Sierra to accelerate faster, giving your vehicle a night/day difference in performance
36 Adjustable Settings: Equipped with 4 different modes: Eco, City, Sport, and Sport +. Each mode has an additional 36 adjustable settings to fine-tune to your liking, making this a must have GMC Sierra accessory
Eco Mode: The Pedal Commander throttle response controller significantly slows throttle response to improve efficiency
Quick & Easy Installation: Pedal Commander is a simple plug-and-play device that takes only about 10 minutes to install. Now Bluetooth compatible, you can control the unit using our free Pedal Commander app
Will Not Void Your Warranty: Pedal Commander will not void the warranty on your GMC Sierra or leave any trace behind on your ECU

Bestseller No. 7

Power Stop S5030 Rear Pair of High-Temp Red Powder Coated Calipers For Cadillac Escalade Chevy Avalanche Silverado 1500 Suburban 1500 Tahoe Sierra 1500 Yukon XL 1500 Yukon Denali

Electrostatic High-Heat Powder Coat helps to resist rust and corrosion
High temperature EPDM rubber dust boots and premium silicone lubricant are used for a smoother operation and an extended life in extreme conditions
New seals, caliper guide pins, dust boots, bleeder screws, stainless-steel brake pad abutment clips and mounting brackets
All calipers are powder coated, assembled, and tested in our Chicago, IL facility
See below for information on our caliper core rebate program, or find the form on our website!

Bestseller No. 8

JDMSPEED High Performance Spark Plug Ignition Wire For 2000-2009 CHEVY GMC V8

100% New Construction
10.2mm Spiral Wound Design
One Year Warranty
UltraLow Resistance KEVLAR Core
Ultra High Strength/High Temp. Silicone Boots and Sleeve

Bestseller No. 9

Fleece Performance Engineering -GM-ALO-37 Gm All Lights On (2003-2007 Classic)

Package Dimensions - 3.0 " L X 3.0 " W X 1.0 " H
Package Weight : 1.0 Lbs
Package Quantity : 1
Product Type : Auto Part

Bestseller No. 10

3" Performance Parts & Miscellaneous Accessory Compatible with Chevy Silverado GMC Sierra 2004.5-2010 LLY, LBZ, and LMM 6.6L Duramax Diesel Engines OE GMCA424,117000500 -Smooth Surface Black

117000500 Compatible Models : Compatible With 2004.5-2010 GMC / Chevy Duramax Diesel 6.6L Trucks and LLY, LBZ, LMM 6.6L 15468
High Quality : 3" Stainless Steel Construction,thermal Coated & Heat Wrapped，Oxidation resistant, high strength，High temperature resistant.OE GMCA424
Direct Replacement : It meets or exceeds the oem standard, and has been tested in the factory, perfectly matched with the original car, and can be installed directly.
VERIFY MODEL : Please check pictures, vehicle compatibility, manufacturer part number and product description before buying.
Buy With Confidence : If the part fails or breaks, please contact us for replacement. Save hundreds of dollars off of dealer prices by purchasing this part and taking advantage of our warranty.Price concessions and guaranteed, no need to worry about quality problems，and Thank you for being my client

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Final thoughts about 4.8L mods

To sum up, when modding the 4.8 L Silverado the options are numerous. Whether you want more power, better handling or a combination of both, there’s something for everyone. Of course, it depends on your budget and taste but ultimately you’ll want to achieve the end result that gives your Silverado the look and performance that you want.

From engine modifications, suspension components and other exterior touches there are a variety of ways to give your Silverado that extra touch. Although some mods may be expensive it’s important to remember that it will likely pay for itself in performance and satisfaction over time.

Find the best 4.8 mods for Silverado and Sierra trucks on Amazon.

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