GPI LS Turbo Camshaft - with 8620 Hardened Core Upgrade (2010 - 2015 Camaro | 2014 - 2019 C7 Corvette) - TC-STG1-8620
Stage 1 Turbo LS Cam with 8620 Hardened Core Upgrade
The GPI TC-STG1-8620 turbo camshaft delivers the same street-friendly performance characteristics as the standard TC-STG1 - but with the added durability and wear resistance of an 8620 hardened core. Built for turbocharged 6.0 - 6.2L LS engines, this cam is engineered for low - moderate boost setups, offering quick spool, strong mid-range torque, and outstanding drivability for 5th Gen Camaros and C7 Corvettes.
With a mild performance idle, excellent throttle response, and reliable valvetrain behavior, this cam is ideal for street cars that need real-world performance without compromising comfort. Upgraded valve springs and pushrods are required, and additional gains can be unlocked with a higher-stall converter and free-flowing intake and exhaust systems.
8620 Hardened Core Advantages
The 8620 hardening process creates a significantly more durable camshaft by improving the wear resistance of the lobes while preserving the ductile properties of the alloy. The result is a camshaft that withstands the demanding conditions of turbocharged applications and offers extended service life - making the TC-STG1-8620 the premium choice for reliability.
Turbo LS Camshaft Overview
GPI's turbo camshafts are proven to be some of the most effective turbo cams on the market for LS2, L76, and LS3 engines using LS3/L92 rectangle-port heads. Our cam and cylinder head packages have propelled countless 5th Gen Camaros and C6/C7 Corvettes into the 9-second zone, cementing their dominance in both street and track environments.
The TC-STG1-8620 sits at the entry point of GPI's turbo cam lineup but offers massive improvements over stock while maintaining excellent street manners.
Stage 1 Turbo Cam Specs - TC-STG1-8620
- Duration (Int/Exh): 219 / 223
- Valve Lift (Int/Exh): .620 / .603
- LSA: 113
- ICL: +3
Performance Characteristics
- Mild performance idle suitable for daily-driven turbo builds
- Fast-spooling behavior for responsive boost
- Strong mid-range torque and power delivery
- Ideal for low - moderate boost turbo setups
- Works extremely well with free-flowing intake/exhaust systems
- Benefits significantly from a higher-stall converter
- Valve spring and pushrod upgrade required
- Enhanced durability thanks to the 8620 hardened core
Quick Specs
- Engine: 6.0L - 6.2L LS (Turbocharged)
- Cam Type: 3-bolt turbo LS cam with 8620 core
- Duration: 219 / 223
- Lift: .620 / .603
- LSA / ICL: 113 / +3
- Boost Range: Low - moderate boost
- Converter: High-stall recommended
- Valvetrain Upgrades: Springs & pushrods required
Fitment
Chevrolet Camaro
- 2010 Chevrolet Camaro
- 2011 Chevrolet Camaro
- 2012 Chevrolet Camaro
- 2013 Chevrolet Camaro
- 2014 Chevrolet Camaro
- 2015 Chevrolet Camaro
Chevrolet Corvette C7
- 2014 Chevrolet Corvette
- 2015 Chevrolet Corvette
- 2016 Chevrolet Corvette
- 2017 Chevrolet Corvette
- 2018 Chevrolet Corvette
- 2019 Chevrolet Corvette
FAQs
What makes the 8620 version better than the standard cam?
The 8620 hardened core provides improved lobe wear resistance and durability, especially beneficial for turbo applications and long-term reliability.
Will this cam still have good street manners?
Yes. The TC-STG1-8620 retains the mild idle and excellent drivability of the standard Stage 1 cam while offering superior durability.
Why Buy from Beefcake Racing?
Beefcake Racing offers top-tier LS performance support, fast shipping, and expert camshaft recommendations. Whether you're building a turbocharged street machine or a competitive track setup, we provide the parts and guidance to get the best results.
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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