GPI High Lift LS Camshaft for GM Trucks - with 8620 Hardened Core Upgrade (4.8L / 5.3L / 6.0L / 6.2L) - HLT1-8620
Enhanced-Durability High Lift Camshaft for Working Trucks
The GPI HLT1-8620 High Lift LS Camshaft gives truck owners the perfect blend of torque, drivability, and upgraded valvetrain durability thanks to its 8620 hardened core. Designed for 4.8L, 5.3L, 6.0L, and 6.2L LS engines, this cam delivers excellent low-end torque, a smooth idle, and long-term reliability - ideal for work trucks, towing, and street-driven builds.
This hardened-core version provides superior wear resistance while maintaining the quiet lobe design and stability that make the HLT1 one of the most popular LS truck cams on the market.
Why Choose the 8620 Hardened Core?
The 8620 heat-treating process creates a stronger surface on every cam lobe, significantly enhancing durability under higher loads. This makes the HLT1-8620 especially valuable for trucks that see heavy use, long mileage, or aggressive driving.
High Lift Camshaft Series Overview
GPI's High Lift LS truck camshafts cover a wide range of applications - from mild street performance to serious power builds. The HLT1 and HLT2 are designed for daily-driven trucks that need real-world torque without sacrificing manners or requiring extensive supporting mods.
Cam Specs - HLT1-8620
- Part Number: HLT1-8620
- Duration (Int/Exh): 212 / 216
- Lift (Int/Exh): .629 / .629
- LSA: 112
- ICL: +4
- Recommended RPM Range: 1,750+ RPM
- Converter Required: No
- Core: 8620 Hardened Steel
Performance Highlights
- Upgraded 8620 hardened core for superior durability
- Stable idle and excellent drivability
- Improved low-end torque for towing and daily driving
- Quiet, long-life lobe design
- No converter or exhaust upgrade required
Quick Specs
- Part Number: HLT1-8620
- Engine Compatibility: 4.8L / 5.3L / 6.0L / 6.2L LS
- Cam Type: High Lift, 3-Bolt LS Camshaft
- Core Type: 8620 Hardened
- Street Manners: Excellent
- Intended Use: Work trucks, daily drivers, tow rigs, mild performance builds
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 hot rods and classic trucks
FAQs
Does this cam require a torque converter upgrade?
No, the HLT1-8620 works perfectly with a stock converter.
Why choose the 8620 hardened core version?
The hardened core increases durability and wear resistance, making it ideal for high-mileage or heavy-use trucks.
Why Buy from Beefcake Racing?
Get expert camshaft guidance, fast shipping, and unbeatable support when you order from Beefcake Racing.
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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