GM Ecotec Racing Valvetrain Systems – High RPM Valve Control, Rocker Stability & Valve Float Prevention

Choose GM Ecotec Valvetrain Parts for Your Build

Start with your engine code, cylinder-head casting, camshaft base circle, valve lift and intended RPM range. Choose each component for the assembled combination rather than displacement alone.

• Need better valve control? Compare the 83 lb valve springs, set of 16. Check installed height, pressure and operating clearances against your camshaft requirements.
• Replacing valves? Choose eight HF35.6 intake valves, eight exhaust valves, or the complete 16-valve intake and exhaust set. Match standard or extended tips to your camshaft geometry.
• Planning retainers and lift clearance? See Ecotec titanium retainers and BK Racing high-lift spring seats and seals. These are separate components; verify spring, keeper and valve compatibility.
• Building a mechanical-lash valvetrain? Review the L61/LSJ solid lash adjusters and later-generation solid lash adjusters. Confirm the correct version for your head and camshaft.

Read Before You Order

Our valve-spring guide explains spring selection, and the exhaust-valve guide covers sizing, materials and fitment. No single spring pressure or lift figure establishes compatibility with every engine.

Ask BK Racing for help choosing your combination. Send your engine code, head details, camshaft specification and intended use so we can help you select the right parts.