GM LS Thumpr Cam - 275THR

The GM LS Thumpr Cam – 275THR by COMP CAMS is a hydraulic roller camshaft designed for LS-platform engines that seek aggressive street and mild-strip performance while maintaining daily drivability. This camshaft is ideal for enthusiasts looking to enhance their vehicles, from restomod muscle cars to modern hot rods.

Engineered with advanced hydraulic roller technology, the 275THR camshaft minimizes parasitic friction and ensures precise valve actuation without the need for valve lash adjustments typical of flat-tappet designs. It provides sufficient lift and duration to enhance mid-range torque and top-end performance, making it suitable for naturally aspirated applications.

This camshaft is compatible with LS1, LS2, and other LS-based engines, allowing for easy installation with stock pushrods and rocker arms. Its design is particularly beneficial for budget-conscious builds and vintage-platform conversions, where clearance and cost savings are crucial.