GPI High Lift LS Camshaft for GM Trucks (4.8L / 5.3L / 6.0L / 6.2L) - HLT4
Maximum-Output High Lift Performance Camshaft
The GPI HLT4 High Lift LS Camshaft is the most aggressive option in GPI's High Lift Performance Series, built for the enthusiast who wants to take their Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche, or LS-swapped hot rod to the next level. Featuring a rowdy big-cam idle and strong power delivery from 3,250 RPM and up, the HLT4 is engineered for street/strip setups that demand serious airflow and top-end acceleration.
Designed to work on stock bottom-end 4.8L, 5.3L, 6.0L, and 6.2L LS engines, this camshaft delivers outstanding gains when paired with high-flow intake/exhaust upgrades and gear ratio changes. A stall converter and headers are required for proper performance.
High Lift Performance Series Overview
The HLT3 and HLT4 camshafts make up GPI's High Lift Performance lineup - designed for drivers who want the sound, feel, and performance of an aggressive LS camshaft that still works on factory short blocks. These cams are proven across thousands of street trucks and custom builds, offering huge gains when supported with proper airflow and drivetrain upgrades.
Cam Specs - HLT4
- Part Number: HLT4
- Duration (Int/Exh): 224 / 232
- Lift (Int/Exh): .629 / .629
- LSA: 111
- ICL: +3.5
- RPM Range: 3,250+ RPM
- Converter Required: Yes
- Headers Required: Yes
Performance Highlights
- Most aggressive cam in the GPI High Lift Truck lineup
- Big, distinctive camshaft idle
- Strong performance from mid-range into high RPM
- Ideal for street/strip and race-oriented truck builds
- Excellent gains with high-flow intake, exhaust, and gears
Quick Specs
- Part Number: HLT4
- Fitment: 4.8L / 5.3L / 6.0L / 6.2L LS Engines
- Idle Quality: Aggressive / big-cam
- Required Mods: Stall converter, headers
- Recommended Mods: Gears, high-flow intake/exhaust
Fitment
- Chevrolet Silverado (4.8L / 5.3L / 6.0L / 6.2L)
- GMC Sierra (4.8L / 5.3L / 6.0L / 6.2L)
- Chevrolet Tahoe
- Chevrolet Suburban
- GMC Yukon / Yukon XL
- Chevrolet Avalanche
- LS-swapped hot rods, street rods, and custom builds
FAQs
How aggressive is the HLT4 compared to the HLT3?
The HLT4 offers a stronger mid-range and higher RPM capability, plus a noticeably more aggressive idle. It's the top-end performance choice in the series.
What supporting mods are required?
A stall converter and headers are required. High-flow intake/exhaust and deeper gears are strongly recommended for best results.
Why Buy from Beefcake Racing?
Beefcake Racing provides expert guidance, proven performance knowledge, and fast shipping on all GPI camshafts.
Call 1-855-827-7223 or email sales@beefcakeracing.com.
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