From: $439.00
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Our camshafts are our most popular product, and for good reason – they are pound for pound – the best on the market.
These high lift performance truck cams are specifically designed and engineered to take your Silverado, Sierra, Tahoe, Yukon, Avalanche, Suburban, hot rod, or street rod to the next level.
Want to learn why GPI makes the best performing Camshafts you can buy!
GPI R&D
Camshafts & Valvetrain
GPI – 5/16″ Hardened Pushrods for LS1 / LS2 / LS6 / L92 / LS3 / L99
We have 4 different iterations of our 3 Bolt (High Lift) Camshafts for the 4.8L, 5.3L, and 6.0L truck engines – from mild performance increase with stock street manners, to high performance applications. Because these cams cover such a wide spectrum of engines, platforms, and applications – we made sure to offer a camshaft that is sure to meet every need.
The HLT1 and HLT2 camshafts are the High Lift Truck Camshafts. These cams are specifically designed for trucks that are used as trucks. There are no downsides. They offer a smooth idle, excellent low end torque, and smooth lobe design for quiet valvetrain and durability. Improved power and torque across the board make these cams the easy choice for an individual that uses their truck – but wants a little more power.These cams do not require an upgraded torque converter or exhaust.
Cam Specs:212/216 .629/.629 112+4
The HLT1 camshaft was specifically designed for trucks that are used as trucks. They offers stable idle, excellent low end torque (1,750 rpm and up), and smooth lobe design for quiet valve train operation and longevity. We designed this cam for use in trucks with minimal modifications.This cam does not require an upgraded torque converter or exhaust.
Cam Specs:216/220 .629/.629 112+4
The HLT2 camshaft was designed for the individual that wants the maximum potential power without dramatically sacrificing low end torque. Offers stable idle, excellent low end torque (2,250 rpm and up), and smooth lobe design for quiet valve train operation and longevity. We designed this cam for use in trucks with minimal modifications.This cam does not require an upgraded torque converter or exhaust, although a converter is recommended – specifically on 5.3L trucks.
The HLT3 and HLT4 camshafts are the High Lift Performance Camshafts, and are designed for the enthusiast that wants to take their truck or hotrod to the next level. The 4.8L, 5.3L, and 6.0L truck engines are used in a huge variety of applications from factory built trucks and SUV’s – to the thousands of custom built one off Hot Rod and Street Rods. These are extremely versatile camshafts with a big cam idle, but a very reasonable RPM range for street fun. These cams are designed for stock motors, but realize substantial performance gains when matched with high flow intake and exhausts, as well as increased rear axle ratios. Increased stall speed torque converter and headers are required.
Cam Specs:220/224 .629/.629 111+4
The HLT3 camshaft is designed for the enthusiast that wants to take their truck or hotrod to the next level.These are extremely versatile camshafts with a big cam idle, but a very reasonable RPM range (2,750rpm and up) for street fun.These cams are designed for stock motors, but realize substantial performance gains when matched with high flow intake and exhausts, as well as increased rear axle ratios.*Increased stall speed torque converter and headers are required.
Cam Specs:224/232 .629/.629 111+3.5
The HLT4 camshaft is designed for the enthusiast that wants to take their truck or hotrod to the next level.These are extremely versatile camshafts with a big cam idle, but a very reasonable RPM range (3,250rpm and up) for street and race.These cams are designed for stock motors, but realize substantial performance gains when matched with high flow intake and exhausts, as well as increased rear axle ratios.*Increased stall speed torque converter and headers are required.
GPI - High Lift LS Camshaft (4.8L / 5.3L / 6.0L / 6.2L)
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