The GMS Stage.I Rick Crawford LT4 Camshaft Package.
The camshaft shootout winner + the valve-train to back it up.
If you’re going through the work of making your LT4 more powerful & efficient, we suggest you invest in a camshaft and package that will grow with you as your build progresses. Which was the core idea behind converting the 2026 LT4 Camshaft Shootout Winning Combination into a series of turn-key packages from mild to wild.
In short…
STAGE.I = Was designed for those who already have an aftermarket head or cam package installed and are ready for an upgrade away from there smaller Stage.I or Stare.II camshaft and ready for the most powerful and efficient camshaft of the shootout.
STAGE.II = Was designed for those who are starting from a stock internal motor, or perhaps a set of parts that is no longer effective, and are ready for a complete “Heads + Cam + Boost” upgrade with all of the necessary hardware needed to make some killer gains, and turn some heads in the process. This is a deluxe package and is nearly identical to the parts we selected for our own 2022 Camaro ZL1 Shop Car. You can read more about this package HERE.
STAGE.III = Was designed for those who are starting from a stock internal motor, or perhaps a set of parts that is no longer effective. This package will provide you with not only, the exact set of Ported Flag Motorsports MACH.V Cylinder Heads, award winning Rick Crawford Camshaft, but also the same KONG X-PORTED Service and Katech 103mm TB that helped up gain over 300hp in the Camshaft Shootout. Along with all of the top-of-the line hardware and valve-train components we use in our own cars. If you want the easy button of H/C/Boost Combos? This is it. You can read more about this package HERE.
The GMS Stage.I - LT4 Rick Crawford Camshaft Package
The GMS Stage.I package features a custom Rick Crawford camshaft designed for the LT4 owner chasing maximum horsepower and, high revving, high RPM powerband. It’s a strong match for a stock displacement engine with ported heads and a ported factory 1.7L blower, and a foundation that can keep working as your build moves toward a more cubic inches, or a larger 2650 / 3.0L supercharger.
In our engine dyno comparison, changing to the Rick Crawford cam raised peak output on our baseline (stock form engine) from 684.2 to 760.5 hp. Thats a 76.3 hp gain, from cam only with minimal tuning! Peak boost fell from 12.7 to 9.8 psi showing you just how efficient this camshaft really is.
This package takes the guesswork out, and pairs the cam with premium GM Cadillac Racing lifters, and some BTR .685” inch lift spring kit, and BTR chromoly pushrods. It’s the starting point for an LT4 that is ready to make power now and gives you room to build further.
Advertised camshaft specifications
22x° / 25x° duration · .65x″ / .65x″ lift · 11x° LSA · 38% fuel-pump lobe
Choose your cam configuration
Single bolt: For customers using the Katech Billet VVT Cover (our cover of choice) or clients retaining the factory-style cam phaser and front-cover arrangement with the phaser locked out. The required lockout and timing components must match the vehicle’s installation.
Three bolt: For customers who plan to use the LME front cover and an LS3 3 bolt sprocket, this is the version you want!
What’s included
1. Custom Rick Crawford Camshaft
The centerpiece of the package: a high output LT cam with a 38% fuel-pump lobe. Select the single-bolt or three-bolt version to suit your front-drive and timing configuration.
2. GM Cadillac Racing hydraulic roller lifters GM #88958689
A complete set of 16 premium lifters chosen for the demands of an aggressive, high RPM hydraulic valvetrain.
3. BTR Platinum Plus .685″ lift valve spring kit
Choose SK704/0520/BB for stock valve guides or SK704/6560/BB for bronze valve guides. The kit includes the matched spring hardware for its specified application. Confirm the head’s guide configuration, installed height, and valvetrain clearances before installation.
4. BTR one-piece chromoly pushrods — set of 16
The final length is determined from measurements on your assembled engine. Your pushrods ship separately after you or your installer confirm the required length with GMS. The final BTR part number will reflect that measured length; PR7850375-16 denotes the 7.850-inch version, if that is the length your build requires.
What else do you need to complete the installation?
That has alot to do with where you are starting from. Need help deciding? Email me at gabe@griffin-motorsports.com and let’s discuss in more detail. Just to be clear, we always suggest upgrading your heads, oil pump, etc when opening the motor, which is why this package was designed for people that already have all of the supporting mods, and are simply wanting to upgrade their camshaft.
Built around your next step
Start with the cam and supporting valvetrain. Add MACH V heads when you’re ready to expand the engine’s breathing capability. Move to the KONG X-Port or a larger blower as the rest of the combination grows. Stage.I gives you a considered starting point without forcing you to buy the entire future build today.
Tell us your vehicle, cylinder heads, blower, fuel system, RPM target, and current timing-cover setup when ordering. We’ll help confirm the right cam version and spring-kit selection for your combination.
The GMS Stage.I Rick Crawford LT4 Camshaft Package.
The camshaft shootout winner + the valve-train to back it up.
If you’re going through the work of making your LT4 more powerful & efficient, we suggest you invest in a camshaft and package that will grow with you as your build progresses. Which was the core idea behind converting the 2026 LT4 Camshaft Shootout Winning Combination into a series of turn-key packages from mild to wild.
In short…
STAGE.I = Was designed for those who already have an aftermarket head or cam package installed and are ready for an upgrade away from there smaller Stage.I or Stare.II camshaft and ready for the most powerful and efficient camshaft of the shootout.
STAGE.II = Was designed for those who are starting from a stock internal motor, or perhaps a set of parts that is no longer effective, and are ready for a complete “Heads + Cam + Boost” upgrade with all of the necessary hardware needed to make some killer gains, and turn some heads in the process. This is a deluxe package and is nearly identical to the parts we selected for our own 2022 Camaro ZL1 Shop Car. You can read more about this package HERE.
STAGE.III = Was designed for those who are starting from a stock internal motor, or perhaps a set of parts that is no longer effective. This package will provide you with not only, the exact set of Ported Flag Motorsports MACH.V Cylinder Heads, award winning Rick Crawford Camshaft, but also the same KONG X-PORTED Service and Katech 103mm TB that helped up gain over 300hp in the Camshaft Shootout. Along with all of the top-of-the line hardware and valve-train components we use in our own cars. If you want the easy button of H/C/Boost Combos? This is it. You can read more about this package HERE.
The GMS Stage.I - LT4 Rick Crawford Camshaft Package
The GMS Stage.I package features a custom Rick Crawford camshaft designed for the LT4 owner chasing maximum horsepower and, high revving, high RPM powerband. It’s a strong match for a stock displacement engine with ported heads and a ported factory 1.7L blower, and a foundation that can keep working as your build moves toward a more cubic inches, or a larger 2650 / 3.0L supercharger.
In our engine dyno comparison, changing to the Rick Crawford cam raised peak output on our baseline (stock form engine) from 684.2 to 760.5 hp. Thats a 76.3 hp gain, from cam only with minimal tuning! Peak boost fell from 12.7 to 9.8 psi showing you just how efficient this camshaft really is.
This package takes the guesswork out, and pairs the cam with premium GM Cadillac Racing lifters, and some BTR .685” inch lift spring kit, and BTR chromoly pushrods. It’s the starting point for an LT4 that is ready to make power now and gives you room to build further.
Advertised camshaft specifications
22x° / 25x° duration · .65x″ / .65x″ lift · 11x° LSA · 38% fuel-pump lobe
Choose your cam configuration
Single bolt: For customers using the Katech Billet VVT Cover (our cover of choice) or clients retaining the factory-style cam phaser and front-cover arrangement with the phaser locked out. The required lockout and timing components must match the vehicle’s installation.
Three bolt: For customers who plan to use the LME front cover and an LS3 3 bolt sprocket, this is the version you want!
What’s included
1. Custom Rick Crawford Camshaft
The centerpiece of the package: a high output LT cam with a 38% fuel-pump lobe. Select the single-bolt or three-bolt version to suit your front-drive and timing configuration.
2. GM Cadillac Racing hydraulic roller lifters GM #88958689
A complete set of 16 premium lifters chosen for the demands of an aggressive, high RPM hydraulic valvetrain.
3. BTR Platinum Plus .685″ lift valve spring kit
Choose SK704/0520/BB for stock valve guides or SK704/6560/BB for bronze valve guides. The kit includes the matched spring hardware for its specified application. Confirm the head’s guide configuration, installed height, and valvetrain clearances before installation.
4. BTR one-piece chromoly pushrods — set of 16
The final length is determined from measurements on your assembled engine. Your pushrods ship separately after you or your installer confirm the required length with GMS. The final BTR part number will reflect that measured length; PR7850375-16 denotes the 7.850-inch version, if that is the length your build requires.
What else do you need to complete the installation?
That has alot to do with where you are starting from. Need help deciding? Email me at gabe@griffin-motorsports.com and let’s discuss in more detail. Just to be clear, we always suggest upgrading your heads, oil pump, etc when opening the motor, which is why this package was designed for people that already have all of the supporting mods, and are simply wanting to upgrade their camshaft.
Built around your next step
Start with the cam and supporting valvetrain. Add MACH V heads when you’re ready to expand the engine’s breathing capability. Move to the KONG X-Port or a larger blower as the rest of the combination grows. Stage.I gives you a considered starting point without forcing you to buy the entire future build today.
Tell us your vehicle, cylinder heads, blower, fuel system, RPM target, and current timing-cover setup when ordering. We’ll help confirm the right cam version and spring-kit selection for your combination.
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