Engines and Components› Camshafts and Valvetrain

GPI

HLT3-8620 High Lift LS Camshaft

$126.50

SKU: gpi-hl-ls-cam

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Overview

The GPI HLT3-8620 High Lift LS Camshaft is an upgraded performance camshaft designed for GM LS engines. It features an 8620 hardened core for increased wear resistance, longevity, and strength. This camshaft provides an aggressive idle and a strong powerband from approximately 2,750 RPM and up. It is compatible with 4.8L, 5.3L, 6.0L, and 6.2L LS engines.

This camshaft is ideal for performance builds and hot rods, offering a commanding idle and strong top-end pull. It can be paired with high-flow intake and exhaust systems and gear ratio upgrades for enhanced performance. An increased stall converter and headers are required for proper operation.
Show original supplier description
The GPI HLT3-8620 High Lift LS Camshaft is an enhanced, durability-focused version of the popular HLT3 camshaft, engineered with an 8620 hardened core. This upgrade provides superior wear resistance, improved longevity, and added strength for aggressive performance applications. Designed specifically for 4.8L, 5.3L, 6.0L, and 6.2L GM LS engines, this camshaft delivers a commanding performance idle and a robust mid- to upper-RPM powerband that kicks in around 2,750 RPM. The 8620 hardened core significantly increases surface hardness while maintaining ductile core strength, resulting in improved lobe wear resistance, a stronger overall camshaft structure, and a longer service life, especially under aggressive spring pressures. This makes it an excellent choice for high-performance or hot rod applications. This camshaft is well-suited for stock bottom-end engines and offers even greater potential when combined with high-flow intake and exhaust systems and gear ratio upgrades. For proper operation, the HLT3-8620 requires the installation of headers and an upgraded stall converter. The cam specifications include 220/224 duration, .629/.629 lift, a 111 LSA, and an ICL of +4, operating in the 2,750+ RPM range.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandGPI
Part Numbergpi-hl-ls-cam
CategoryEngines and Components
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Shipping

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