GPI High Lift LS Camshaft for GM Trucks - with 8620 Hardened Core Upgrade (4.8L / 5.3L / 6.0L / 6.2L) - HLT2-8620
High Lift Truck Cam with Maximum Power and 8620 Core Durability
The GPI HLT2-8620 High Lift LS Camshaft is built for enthusiasts who want stronger mid-range and upper-RPM performance without giving up low-end torque. Designed for 4.8L, 5.3L, 6.0L, and 6.2L LS truck engines, the HLT2-8620 features the same proven power profile as the standard HLT2 - now enhanced with a hardened 8620 steel core for extreme wear resistance and long-term durability.
This camshaft maintains a stable idle, offers excellent low-end torque (2,250+ RPM), and is optimized for trucks with minimal supporting mods. A torque converter upgrade is not required, though it is recommended on 5.3L applications to unlock peak drivability.
Why Choose the 8620 Hardened Core Upgrade?
The 8620 heat-treating process significantly enhances lobe surface hardness and wear resistance, making this version ideal for trucks that see heavy work, long mileage, or aggressive use. The result is a stronger, longer-lasting camshaft with the same outstanding performance of the HLT2.
High Lift Camshaft Series Overview
GPI's High Lift LS truck cams are engineered for durability, drivability, and real-world power gains. The HLT1 and HLT2 models deliver smooth idle quality, excellent torque, and outstanding valvetrain stability - perfect for tow rigs, street trucks, and performance builds that still need to behave on the road.
Cam Specs - HLT2-8620
- Part Number: HLT2-8620
- Duration (Int/Exh): 216 / 220
- Lift (Int/Exh): .629 / .629
- LSA: 112
- ICL: +4
- Recommended Operating Range: 2,250+ RPM
- Converter Required: No (recommended for 5.3L)
- Core Type: 8620 Hardened Steel
- Engine Compatibility: 4.8L / 5.3L / 6.0L / 6.2L LS
Performance Highlights
- Increased top-end power without sacrificing low-end torque
- Improved durability from the 8620 hardened steel core
- Stable idle with excellent street manners
- Quiet, long-life lobe design for demanding truck applications
- No mandatory converter or exhaust upgrade required
Quick Specs
- Part Number: HLT2-8620
- Cam Type: High Lift LS Truck Cam
- Best For: Daily driving, towing, street performance
- Supporting Mods Needed: None required
- Recommended Mods: Torque converter on 5.3L engines
Fitment
- Chevrolet Silverado (4.8L / 5.3L / 6.0L / 6.2L)
- GMC Sierra (4.8L / 5.3L / 6.0L / 6.2L)
- Chevrolet Tahoe
- GMC Yukon / Yukon XL
- Chevrolet Suburban
- Chevrolet Avalanche
- LS-swapped trucks and hot rods
FAQs
Do I need a converter upgrade for the HLT2-8620?
No, but it is recommended for 5.3L trucks to improve acceleration and point-and-go response.
What is the benefit of the 8620 hardened core?
The 8620 core dramatically increases camshaft durability, making it ideal for heavy-use trucks or high-mileage applications.
Why Buy from Beefcake Racing?
Beefcake Racing offers expert camshaft guidance, fast order processing, and the best customer support in the LS truck market.
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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