LT4 Supercharger Lid Upgrade
We all know arriving fashionably late to the party comes with risks, but in the world of aftermarket performance parts, that’s not always a bad thing. In fact, it can be the perfect opportunity to step back, observe the competition—what works, what doesn’t—and then innovate where others fall short. And that’s exactly what Matt and the team at DMS did with this stunning blend of engineering and ingenuity.
High Flow ZL1 Impact Frame
GOOD NEWS; For the sake of constant improvement, we decided to make several changes to Gen.2 version of our signature GMS High Flow Impact bar. To start, we decided to lower the height approximately. .5” to allow for a pinch more clearance with our Stage.I Oil Cooler, and now also provided a fixed welded bracket which improves alignment, and makes for a faster and stronger install / connection. We improved our laser cutting files which makes for better fitment on our welding jigs, which also saves a few bucks in welding labor, that we are happy to pass on to you. The biggest improvement for this next version of our crash bar, is the in the wind deflectors. Because we don’t sit around and wait for something to break, in order to fix or improve it… it should be no surprise that we decided to completely redesign the wind deflectors to provided a much more efficient air path from the massive ZL1 grill opening into either the main front HX, lower AUX coolers and brake ducts. This process alone required dozens of hours of 3D modeling, trial and error, test fitting and more test fitting in order to get it just right.
from $895.00
LT4 Billet Supercharger Lid
We all know arriving fashionably late to the party comes with risks, but in the world of aftermarket performance parts, that’s not always a bad thing. In fact, it can be the perfect opportunity to step back, observe the competition—what works, what doesn’t—and then innovate where others fall short. And that’s exactly what Matt and the team at DMS did with this stunning blend of engineering and ingenuity.
from $895.00
Check out our Blog
Why The LT4 Supercharger Lid Matters
The LT4 is a strong platform right out of the box, but when you're chasing max efficiency, weight savings, better looks and more whine, the stock components start to show their limits. Which is what the team at DMS and Verus Engineering set out to maximize. Here's why upgrading your LT4 supercharger lid matters.
The Problem With The Stock LT4 Supercharger Lid
The factory LT4 lid looks functional, but under the surface, it's a weak link in an otherwise capable system. It's not just about how it flows; it's how it fails to support power, cooling, and allowing all the sweet whine to sign, at the level most enthusiasts demand. Here's where the OEM lid falls short:
Restricted Blower Whine
The factory lid is actually designed to muffler the sweet supercharger whine that people will spend so much money to increase. Swapping out that thick, heavy, sound-deadening OEM supercharger lid for a much thinner and lighter GMS billet supercharger lid for your LT4 is the easiest mod you can make to allow more of that sweet supercharger whine to resonate.
Airflow Matters
The stock lid is just what you would expect from an OEM. Ugly, rough cast, and lacking a center airfoil to help split and smooth the air path from the rotorpack output, up, over and down into the cooling bricks. This lack of airflow guidance can create unnecessary turbulence inside the blower. The team at Verus engineering utilized CFD in order to best balance the airflow path onto the bricks more evenly and with less turbulence than the OEM lid resulting in more power.
Heat Soak Kills Performance
Under aggressive driving, intake air temps climb fast. The OEM lid being as thick and heavy as it is holds a lot more heat, and is much harder to cool down than the much thinner and lighter billet aluminum options. Once heat-soak sets in, the ECM starts pulling timing, and your power fades quickly. Anything we can do to keep the intake charge cool, will help the bottom line.
Benefits Of Upgrading To Griffin Motorsports' Billet Aluminum LT4 Supercharger Lid
Swapping your stock lid for our upgraded version isn't just about chasing numbers; it's about enhancing your driving experience. It's about solving real-world performance issues and unlocking the full potential of your LT4. Here's what sets the DMS LT4 supercharger lid upgrade apart from the rest of the competition. :
Supercharger Whine
The factory lid is actually designed to muffler the sweet supercharger whine that people will spend so much money to increase. Swapping out that thick, heavy, sound-deadening OEM supercharger lid for a much thinner and lighter DMS billet supercharger lid for your LT4 is the easiest mod you can make to allow more of that sweet supercharger whine to resonate.
Improved Air Distribution
Verus Engineering reshaped the internal airflow path to reduce turbulence and promote even cylinder distribution. This helps prevent lean conditions in rear cylinders and keeps the engine safer under hard acceleration or increased boost.
More Volume For More Power
The lid adds internal volume, which smooths the pressure curve inside the blower. That leads to better throttle response and makes it easier for the engine to maintain power across the entire rev range.
Eye Candy
For those who want their engine to LOOK as good as it performs, the DMS Billet Supercharger LID for your Camaro ZL1, Corvette Z06, CTS.V and CT.5 Blackwing. Being the only LT4 supercharger lid to be made on a 5-axis CNC machine, the DMS Billet Supercharger LID is clearly the best look option available, and will soon be the focal point of your engine bay!
Key Features Of Our LT4 Blower Lid Upgrade
CNC-Machined For Precision Fit
Each lid is machined from billet to exact tolerances. That means a perfect fit on every install, no trimming, forcing, or guesswork. It’s built to bolt on and perform. Being the only LT4 supercharger lid to be made on a 5-axis CNC machine, the DMS Billet Supercharger LID is clearly the best look option available, and will soon be the focal point of your engine bay!
Optimized Internal Flow Path
We reworked the internal geometry to reduce restriction and promote clean, even airflow. No sharp turns or airflow choke points, just smooth volume and efficient direction from inlet to cylinder.
Larger Plenum Volume
By increasing internal volume, we improve air charge distribution and reduce pressure drop. That added space helps with throttle response and allows more room for boosted air to fill before entering the heads.
Improved Cooling Surface Area
The lid is designed to shed heat faster than the thick cast OEM unit. Although we use thicker material in critical zones, the overall thinner lid saves alot of weight, This helps it resist heat soak and keep temps in check under sustained load.
Optimized Air Path For Intercooler Efficiency
By reshaping the internal path, we direct airflow across the intercooler core more evenly. This allows the charge air to spend more time in contact with cooling surfaces, dropping intake temps more effectively compared to the stock design.
Consistent Cylinder Temps
Uneven airflow in the stock lid often leads to hotter rear cylinders. Our lid balances distribution, helping maintain more consistent temperatures across all banks. That means smoother performance and reduced chances of detonation at higher boost levels.
Compatibility And Installation
We designed this lid to work with real-world builds, no cutting, welding, or mystery fitment. Whether you're running a mild bolt-on setup or a fully built LT4, our LT4 supercharger lid upgrade installs clean and fits like it belongs there.
Direct Fit For Factory LT4 Superchargers
Our lid bolts directly onto stock LT4 blowers with no modifications required. It’s compatible with factory gasket profiles, OEM sensors, and existing intercooler bricks. If your setup runs an LT4 blower, this lid will fit it.
Works With Popular Mods
Running a smaller pulley? Larger throttle body? Port Injection? No problem. This design clears and complements common LT4 upgrades without clearance issues or added installation headaches.
Straightforward Installation Process
If you’ve pulled a blower before, you can handle this install. Everything lines up out of the box, and we include all necessary hardware. Most customers can complete the install in just a few minutes with standard tools and a torque wrench.
Clean Factory Look With Upgraded Performance
We kept the design sleek and purposeful, aggressive where it counts, but subtle enough to blend in with an OEM-style bay. You get a serious performance increase without compromising fit or finish.
Why Choose Griffin Motorsports For Your LT4 Supercharger LID Upgrade?
There’s no shortage of performance parts on the market, but none can match the service, reliability, and design that the DMS Biller Supercharger LID can offer when purchasing through Griffin Motorsports. This LT4 supercharger LID upgrade wasn’t just designed to sell. It was built because we needed it ourselves.
Trusted By The Community
We’ve been building cool sh*t since 2005. Customers who install a Griffin Motorsports LT4 supercharger lid know they’re getting more than just a part. They’re getting the same gear we run on our own build.
Support That Knows Your Setup
Need help with fitment, supporting mods, or tuning questions? You’re not dealing with a call center; you’re talking to the same team that builds and installs these parts daily. We’re here to help your car go faster and run cooler.
Ready To Upgrade Your LT4 Intercooler Lid?
If you're chasing power, reliability, and cooler intake temps, this is the upgrade that makes a difference. The stock lid holds you back. Our LT4 supercharger lid is designed to withstand serious power, track-level heat, and the kind of performance goals that leave no room for compromise.
The LT4 supercharger lid upgrade from Griffin Motorsports is now available on our site. Designed, machined, and tested in-house, this isn’t a copy of someone else’s idea. It’s our solution to a problem we know firsthand.
Frequently Asked Questions About LT4 Supercharger Lid Upgrade
-
The LT4 supercharger lid serves as the upper shell of the blower assembly, directing airflow into the intercooler bricks that manages intake temps.
-
Yes. The lid is fully compatible with E85 and other ethanol-based fuels, provided the rest of your fuel system is set up to handle ethanol blends.
-
Absolutely. While built for performance, the lid is reliable and street-friendly, making it suitable for daily use, weekend cars, or full-time track setups.
-
No, a tune is not required, but for those who want to see the most gains, a retune is recommended.
-
YES! Most report a 30-50% increase in supercharger whine after installation.
-
Currently, we only offer in polished billet. Custom finishes may be available upon request.
-
The current design weights on 6.7 pounds, which is approx. 40% lighter than the OEM cast lid.