GPI LT1 / L86 / L83 Turbo Camshaft - LT Turbo STG3 (2016 - 2024 Camaro | 2014 - 2019 C7 Corvette) - LT-TC3
Aggressive Street/Race Turbo Cam for Maximum LT Power
The GPI LT Turbo STG3 Camshaft (LT-TC3) is built for enthusiasts pushing their turbocharged Gen V LT engines into the moderate to aggressive boost range. Ideal for 6th Gen Camaro, C7 Corvette, and 2014+ GM trucks, STG3 delivers a performance idle, hard mid-range pull, and serious top-end power - making it the go-to choice for high-output street/strip and race applications.
STG3 requires supporting modifications including a high-stall converter, free-flowing exhaust, appropriate gearing, and upgraded valve springs/pushrods. When paired with a properly sized turbo system, this camshaft provides exceptional RPM extension and broad power gains.
Performance Highlights
- Designed for turbo LT engines targeting moderate to aggressive boost
- Strong mid-range and upper RPM power for serious street/strip performance
- Performance idle with noticeable chop
- Pairs exceptionally well with high-stall converters and performance gearing
- Engineered specifically for LT1, L86, and L83 applications
Quick Specs
- Part Number: LT-TC3
- Duration (Int/Exh): 230 / 242
- Valve Lift (Int/Exh): .630 / .612
- LSA: 115
- ICL: +2
- Required Mods: Stall converter, free-flowing exhaust, springs/pushrods, optimal gearing
Why Choose This Cam?
- Perfect for aggressive street/strip turbo LT builds
- Greater mid - high RPM output than STG1 and STG2
- Proven performance in high-boost, high-power LT combinations
- GPI-engineered for track-tested reliability and power
Fitment
Each line is an individual, complete fitment:
2016 Camaro (LT1)
2017 Camaro (LT1)
2018 Camaro (LT1)
2019 Camaro (LT1)
2020 Camaro (LT1)
2021 Camaro (LT1)
2022 Camaro (LT1)
2023 Camaro (LT1)
2024 Camaro (LT1)
2014 Corvette (LT1)
2015 Corvette (LT1)
2016 Corvette (LT1)
2017 Corvette (LT1)
2018 Corvette (LT1)
2019 Corvette (LT1)
2014 GMC Sierra (L83/L86)
2015 GMC Sierra (L83/L86)
2016 GMC Sierra (L83/L86)
2017 GMC Sierra (L83/L86)
2018 GMC Sierra (L83/L86)
2019 GMC Sierra (L83/L86)
2014 Chevrolet Silverado (L83/L86)
2015 Chevrolet Silverado (L83/L86)
2016 Chevrolet Silverado (L83/L86)
2017 Chevrolet Silverado (L83/L86)
2018 Chevrolet Silverado (L83/L86)
2019 Chevrolet Silverado (L83/L86)
FAQs
Is STG3 suitable for a daily-driven turbo LT setup?
STG3 is more aggressive and best suited for street/strip or race builds. It maintains good drivability but requires proper supporting mods.
Do I need a stall converter for this cam?
Yes. A high-stall converter is required to match the cam's powerband and drivability characteristics.
Why Buy from Beefcake Racing?
We offer expert turbo LT guidance, competitive pricing, and fast shipping on all GPI camshafts.
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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