GPI L83 / L84 (5.3L) DI Truck High Lift Cams (2014 GMC Sierra 1500 5.3L / Chevy Silverado) - L83HL1
High Lift Performance Camshaft for 5.3L Direct Injection GM Trucks
The GPI L83HL1 Stage 1 high lift camshaft delivers exceptional gains for the L83 / L84 5.3L Direct Injected truck platform. Pound for pound, these are some of the highest-performing 5.3L DI truck cams available - offering stronger torque, sharper throttle response, and impressive top-end power while maintaining stable idle and excellent drivability.
This cam is designed specifically for trucks with minimal supporting modifications and is fully compatible with the stock torque converter. With its refined lobe design, it produces quiet valvetrain operation and long-term durability - ideal for everyday trucks that still demand serious performance.
High Lift Requirements & Installation Notes
As a high lift LT truck cam, the L83HL1 requires specific components for proper operation:
- Dual .660? valve springs required
- GPI 4° Phaser Limiter required
- No cylinder head milling without checking piston-to-valve clearance
- Flycutting may be required due to tight L83 piston design
Excellent for NA or Centrifugal Supercharger Builds
Originally engineered for naturally aspirated combinations, the L83HL1 also works extremely well with centrifugal blowers thanks to the similar, linear power curve they generate. It is a strong choice for truck owners who may add boost later and want a cam that's ready to grow with their build.
Stage 1 Cam Specs - L83HL1
- Duration (Int/Exh): 212 / 226
- Valve Lift (Int/Exh): .630 / .630
- LSA: 114
- ICL: +8
Performance Highlights
- Works with the stock torque converter for easy installation
- Stable idle and street-friendly drivability
- Smooth, quiet valvetrain thanks to proven lobe design
- Ideal for trucks with minimal supporting mods
- Pairs beautifully with centrifugal superchargers
- Strong torque enhancement across the usable RPM band
- Requires GPI 4° Phaser Limiter
Quick Specs
- Engine: 5.3L L83 / L84 DI
- Cam Type: High lift VVT DI truck cam
- Duration: 212 / 226
- Lift: .630 / .630
- LSA / ICL: 114 / +8
- Converter: Stock converter compatible
- Phaser Limiter: Required
- Milling: Not recommended without PTV checking
- Flycutting: May be required
Fitment
Chevrolet Silverado 1500 - 5.3L
- 2014 Chevrolet Silverado 1500 5.3L
GMC Sierra 1500 - 5.3L
- 2014 GMC Sierra 1500 5.3L
FAQs
Does this camshaft work with the stock converter?
Yes. The L83HL1 was engineered to work perfectly with the factory torque converter, maintaining smooth idle quality and street-friendly behavior.
Will I need to modify my pistons?
Possibly. Due to the tight piston-to-valve clearance in the L83 engine, PTV checks are required and flycutting may be necessary depending on head milling and cam timing.
Why Buy from Beefcake Racing?
Beefcake Racing provides expert recommendations, fast shipping, and proven support for all late-model GM truck performance upgrades. Whether you're choosing your first camshaft or planning a full build, our team is here to help.
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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