GM LS Cathedral Port Engines Fits LS1, LS2, LS6, LQ4, LQ9, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, and all cathedral port LSX variants; works with 14mm/18mm spark plug holes (standard for LS platforms). ????️ Valve Spring Compressor Tool Kit – Fit GM Chevy LSX Cathedral Port Engines (LS1/LS2/LS3/4.8/5.3/5.7/6.0/6.2L) ????.
