GM LS XD-A Adjustable Pushrod Set 8.160-8.392

The COMP CAMS GM LS XD-A Adjustable Pushrod Set 8.160-8.392 is a precision chromoly pushrod assembly engineered for GM LS-series engine builds requiring fine-tuned valve train geometry. This 16-piece set addresses one of the most critical variables in LS engine performance: pushrod length. When valve train clearance and rocker geometry demand exact specification, adjustable pushrods eliminate the trial-and-error approach that costs time and money on the dyno.

The adjustable design spans 8.160 to 8.392 inches, permitting incremental length adjustments that optimize rocker arm geometry and valve lash across the full operating range. Chromoly construction provides the strength and fatigue resistance required in high-RPM LS applications, where pushrod flex or failure introduces catastrophic engine damage. The 16-piece quantity covers a complete V8 valve train—eight pushrods for intake and eight for exhaust—ensuring consistent geometry across all cylinders and both camshaft lobes.

Adjustable pushrods are standard practice for LS engine builders working with non-OEM cylinder heads, custom rocker arm ratios, or modified deck heights. Weekend engine builders tuning carbureted LS platforms and professional engine shops running forced-induction LS builds both rely on this level of precision to avoid valve-to-piston contact and maintain proper rocker geometry under load. Whether verifying a new head combination or dialing in an existing build, this set provides the adjustment range needed to get it right the first time.