StreetMonster Chevy 6L90E Transmission and Torque Converter

60L90E

102690120T

StreetMonster Chevy 6L90E Transmission and Torque Converter

Name: StreetMonster Chevy 6L90E Transmission and Torque Converter
Brand: 102690120T
SKU: shopify_US_10052118708533_50801900421429
Price: 2936.70 USD
Availability: InStock

$2,936.70 USD

$3,263.00 USD

SALE 10% OFF

Requires $1,200.00 USD Core Fee

LOW STOCK ONLY 5 AVAILABLE

FREE SHIPPING

IF BUNDLED WITH FLUID and EXTEND! Covers One Way Only

SAME DAY SHIPPING GUARANTEE

FOR IN STOCK TRANSMISSIONS ORDERED BEFORE 11AM EST

PRODUCT OPTIONS

Questions? Call Us 800-708-0087

VIEW FAQs

Features

Enhanced internal components for greater durability and reliability
Improved fuel efficiency with optimized gear ratios and overdrive capability
Advanced shift control for smooth, consistent performance under various conditions
Perfect fit for larger GM vehicles, such as the Chevrolet Silverado 2500HD and GMC Sierra 3500HD
PREVENT TRANSMISSION FAILURE: Watch our step-by-step installation video https://monstertransmission.com/pages/how-to-properly-install-a-transmission

ABOUT THIS PRODUCT

The 6L90E transmission is a heavy-duty, 6-speed automatic transmission designed for trucks, SUVs, and high-performance vehicles that demand serious power. As the larger sibling to the 6L80E, the 6L90E is built with reinforced components to handle higher torque loads and more extreme driving conditions. Its robust design makes it ideal for towing, hauling, and other high-stress applications, ensuring long-lasting durability even in the toughest environments.

Capable of handling High Torque and Heavy Loads, the 6L90E transmission provides excellent power management, offering seamless gear transitions for improved fuel efficiency and smoother driving experiences. Its adaptive shift logic allows the transmission to adjust to different driving styles, providing optimum performance whether towing a heavy load or cruising on the highway.

FLUID AMOUNT

12.5 Quarts Of Dexron VI Full Synthetic

INSTALL TIME

13 Hours

WARRANTY

Note

2 Year Warranty Unlimited Miles

NOTE

Trucks with the 6.0L must verify Tag ID: 2007-2014 Tag IDs 7DKA, 8DKA, 9DKA, 0DKA, 2DKA, 3DKA, 7DCA, 8DCA, 9DCA, 0DAA, 2DBA, 2DDA / 2011+ Tag IDs 1DDA, 2DCA, 2DAA, 3DAA, 3DCA, 4DCA, 6DCA, 1DGA, 2DHA, 2D2A, 3DHA, 4DHA, 6DHA

Frequently Asked

When Will My Transmission Ship?

In-stock transmissions usually ship the next business day.

Custom builds or out-of-stock units typically ship within 2–4 weeks.

Need it sooner? Call us — we can often make special arrangements.

What Is the Warranty?

We offer the most comprehensive coverage in the industry:

StockMonster: 1 Year (Extendable to 4 Years with Extend)
StreetMonster: 2 Years (Extendable to 5 Years with Extend)
SportMonster: 3 Years (Extendable to 6 Years with Extend)
TrackMonster: 1 Year (Extendable to 4 Years with Extend)

Extend warranties are optional add-ons available during checkout.

Is Shipping Cheaper if I Use a Commercial Address?

No — we offer a $299 Flat-Rate One-Way Shipping to any address, commercial or residential.

If you find a better rate, you're welcome to arrange your own shipping.

Does Your 6L80/6L90 Transmission Come Pre-Programmed?

No — due to the variety of tune files required, we do not pre-program 6L80/6L90 transmissions.

Each vehicle may require a unique calibration. For best results, programming should be done after installation, using a scan tool or tuning software.

Do you Offer Tuning or Programming Support?

While we don’t provide direct tuning, we can recommend trusted tools (HP Tuners, MDI2) and shops for programming assistance. See our full Instruction Manual for all options.

What Stall Converter is Included?

Each Monster 6L80 transmission includes a torque converter matched to the power level and intended use:

StreetMonster: 1600 RPM stall, paired with mild upgrades for vehicles with light bolt-ons or basic tuning.
SportMonster: Includes a 1800–2000 RPM stall converter for better launch and mid-range performance. Great for cammed street builds or bolt-on performance.
TrackMonster: Comes with a 2300–2500 RPM stall converter built for drag racing, aggressive cams, or boosted applications.

Custom Stall Available for TrackMonster: Let us know your cam, gearing, and use case — we can tailor the stall speed to your build.

How Much HP can your 6L80 Handle?

Each Monster 6L80 build is engineered for a specific horsepower range to ensure long-term durability and reliable performance:

StreetMonster: Handles up to 100 HP over stock. Great for lightly modified vehicles with tuning, exhaust, or intake upgrades.
SportMonster: Built for up to 650 HP. Ideal for performance street builds, mild forced induction, or cammed LS engines.
TrackMonster: Rated up to 1000 HP. Our strongest option with billet internals and racing components for drag strip dominance or high-boost builds.

Note: All HP ratings assume proper tuning, cooling, and supporting mods for your specific application.

Does this Transmission include Fluid?

No — fluid must be purchased separately. We offer special discounted prices and even cheaper shipping options when you bundle with our fluid at checkout.

How do I Return my Old Transmission Core?

Returning your core is simple. Once you are ready to return your core, you can initiate the return process in one of two ways:

Fill out our Core Return Form (available online) using the button below.
Or call our Customer Service Team at 800-708-0087 to schedule your return freight pickup.

Please Note:

The customer is responsible for the return shipping cost.
A flat-rate fee of $299 will be deducted from your core refund to cover return freight and handling. If Round Trip Shipping is not Prepaid Upfront.
The core must be the same model and not cracked or damaged beyond rebuild.

Our goal is to make this process as seamless as possible — if you have questions about your core return, just give us a call.