GPI LS7 Cam - SS1 LS7 with 8620 Hardened Core Upgrade (2010 - 2015 Camaro Z/28 | 2014 - 2019 C7 Corvette Z06) - LS7STG1.1-8620
Enhanced-Durability SS1 Camshaft for LS7 Performance Builds
The GPI SS1 LS7 Camshaft with 8620 Hardened Core Upgrade delivers the same street-friendly power gains as the standard SS1 - now with greatly improved strength and long-term wear resistance. Tailored for lightly modified LS7-powered Camaro Z/28 and C7 Corvette Z06 builds, the SS1 offers a mild performance idle, smooth valvetrain operation, and strong pull all the way to 7000 RPM.
Please note: This is a high-lift 3-bolt LS7 camshaft. Installation requires .660? dual valve springs and hardened pushrods.
Why the 8620 Hardened Core Upgrade?
GPI's 8620 hardening process creates a significantly more durable wear surface while retaining the ductility needed to handle aggressive ramp rates and high spring pressures. The result is a camshaft that is stronger, more reliable, and better suited for high-RPM operation - ideal for LS7 drivers who push their cars on the street or track.
Street-Mannered Cam with Proven LS7 Performance
With its refined lobe profiles, the SS1 LS7 features quiet valvetrain behavior and excellent longevity. It improves power throughout the entire RPM band without compromising drivability, making it an excellent choice for cars with minimal modifications. Idle quality remains stable around 675 RPM, maintaining everyday usability.
LS7 Camshaft Series Overview
GPI LS7 cams have long been recognized as the top-performing camshafts for Camaro Z/28 and Corvette Z06 platforms. Although designed with naturally aspirated combinations in mind, the SS1 also pairs exceptionally well with centrifugal superchargers due to its smooth, linear power curve.
With three stages available, the SS1 represents the most street-friendly option, while higher levels target more aggressive NA and track builds.
Cam Specs - SS1 LS7
- Duration (Int/Exh): 224 / 240
- Valve Lift (Int/Exh): .648 / .639
- LSA: 116
- ICL: +4
- Idle Quality: Mild (~675 RPM)
- RPM Range: Strong off idle to 7000 RPM
Performance Highlights
- 8620 hardened core for exceptional durability and wear resistance
- Mild-performance idle ideal for street-driven LS7 builds
- Smooth, quiet lobe design promotes valvetrain longevity
- Strong, linear power gains from bottom end to 7000 RPM
- Excellent choice for lightly modified Z/28 or Z06 vehicles
Quick Specs
- Engine: LS7 (7.0L)
- Cam Type: 3-bolt, high-lift, 8620 hardened core
- Required Upgrades: .660? dual valve springs, hardened pushrods
- Idle Quality: Mild performance
- Best Application: Street builds with minimal modifications
Fitment
Chevrolet Camaro Z/28
- 2010 Chevrolet Camaro Z/28
- 2011 Chevrolet Camaro Z/28
- 2012 Chevrolet Camaro Z/28
- 2013 Chevrolet Camaro Z/28
- 2014 Chevrolet Camaro Z/28
- 2015 Chevrolet Camaro Z/28
Chevrolet Corvette Z06 (C7)
- 2014 Chevrolet Corvette Z06
- 2015 Chevrolet Corvette Z06
- 2016 Chevrolet Corvette Z06
- 2017 Chevrolet Corvette Z06
- 2018 Chevrolet Corvette Z06
- 2019 Chevrolet Corvette Z06
FAQs
What advantage does the 8620 hardened core provide?
It dramatically increases camshaft durability, making it ideal for high-spring-pressure applications and extended high-RPM use.
Is the SS1 LS7 suitable for daily driving?
Yes - its mild idle and smooth lobe design make it the most street-friendly cam in the LS7 lineup, even with the 8620 upgrade.
Why Buy from Beefcake Racing?
Beefcake Racing offers expert guidance, fast shipping, and reliable support for all GPI camshaft upgrades. Need help choosing the right LS7 cam?
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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