GPI Low Lift LS Camshaft - LLT1 with 8620 Hardened Core Upgrade (4.8L / 5.3L / 6.0L / 6.2L) - LLT1-8620
Premium Low-Lift Truck Cam with 8620 Hardened Core Durability
The GPI LLT1 Low Lift Camshaft with 8620 Hardened Core Upgrade is engineered specifically for real-world truck use - towing, hauling, and daily duty across the full range of 4.8L, 5.3L, 6.0L, and 6.2L LS engines. Designed for strong low-end torque, excellent drivability, and quiet valvetrain operation, the LLT1 delivers meaningful performance gains while maintaining the stock manners truck owners rely on.
The 8620 hardening process forms a significantly more durable lobe surface while preserving the alloy's ductility. This results in a stronger, longer-lasting camshaft capable of handling demanding conditions, extended use, and high-load operation without premature wear.
Best of all, the LLT1 remains fully street-friendly - no torque converter upgrade, no exhaust upgrade, and no drivability compromises. Just more torque, improved responsiveness, and exceptional reliability.
Low Lift Camshaft Series Overview
GPI offers five 3-bolt low-lift camshaft profiles for popular LS truck engines, providing options ranging from mild enhancements to higher performance applications. With such broad coverage across platforms and power goals, every user - from daily drivers to performance-minded truck owners - can match a cam to their exact needs.
Low Lift Truck Series: LLT1 & LLT2
The LLT1 and LLT2 camshafts are purpose-built specifically for truck and SUV platforms. These profiles emphasize superior low-end torque, smooth idle, long-term durability, and quiet operation - perfect for users who rely on their truck daily but want more performance.
- Stable, near-OEM idle quality
- Excellent low-RPM torque for towing and drivability
- Smooth lobe design for quiet and durable valvetrain operation
- No torque converter upgrade required
- No exhaust upgrades required
- Improved horsepower and torque across the full powerband
LLT1 Camshaft Specifications
- Duration (Int/Exh): 21x / 21x
- Valve Lift (Int/Exh): .54x / .54x
- LSA: 112
- ICL: +4
- Torque Range: Strong from 1,750 RPM and up
- Core Material: 8620 Hardened Steel
Performance Highlights
- 8620 hardened core provides superior wear resistance and durability
- Designed specifically for trucks used for towing, hauling, and daily driving
- Enhanced low-end torque and throttle response
- Smooth idle ideal for street-driven trucks
- No converter or exhaust modifications required
- Quiet, stable valvetrain operation for long-term reliability
- Compatible with 4.8L, 5.3L, 6.0L, and 6.2L LS engines
Why Choose the LLT1 8620?
If you want the stock-like manners of the original LLT1 cam but need a stronger, longer-wearing solution for demanding or high-mileage use, the 8620 core upgrade is the premium choice. It combines OEM-friendly drivability with exceptional durability and improved performance.
Quick Specs
- Part Number: LLT1-8620
- Duration: 21x / 21x
- Lift: .54x / .54x
- LSA: 112
- ICL: +4
- Converter Required: No
- Exhaust Required: No
- Recommended Use: Daily-driven trucks, towing, hauling
Fitment
Chevrolet Silverado / GMC Sierra
- 4.8L / 5.3L / 6.0L / 6.2L LS Engines (All Applicable Years)
Chevrolet Tahoe / Suburban
- 4.8L / 5.3L / 6.0L LS Engines (All Applicable Years)
GMC Yukon / Yukon XL
- 4.8L / 5.3L / 6.0L LS Engines (All Applicable Years)
Chevrolet Avalanche
- 5.3L / 6.0L LS Engines (All Applicable Years)
Hot Rod & Street Rod LS Swaps
- All LS 4.8L / 5.3L / 6.0L / 6.2L swap configurations
FAQs
What benefits does the 8620 hardened core provide over the standard LLT1?
The 8620 core significantly improves wear resistance and longevity, making it ideal for trucks that see heavy use, higher mileage, or frequent towing and hauling.
Do I need supporting modifications for the LLT1 8620?
No. This camshaft is specifically engineered to work with the stock converter, stock exhaust, and minimal additional modifications.
Why Buy from Beefcake Racing?
Beefcake Racing provides expert LS performance support, competitive pricing, and fast shipping on GPI camshafts. Need help selecting the right cam for your truck or LS swap?
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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