Crower 74101F Features:

Crower 74101F stainless steel shaft rockers for GM SBC LS1 and AFR LS1 applications Includes 5/8 in. diameter shafts with 1.450 in. length and 0.000 intake and exhaust offsets CNC-machined ball race alloy steel shafts are double heat-treated and micro-finish ground in-house Shaft-mounted design delivers high rigidity, precise valvetrain motion, and long life in high-rpm use

Shaft Rockers SBC LS1 & A Stainless Steel, 5/8 Features:

• Stainless steel shaft-mounted rockers for SBC LS1, AFR LS1, LS2, and LS6 applications with 5/8 in. shafts for high-rigidity valvetrain stability at elevated RPM.
• CNC-machined ball-race alloy steel shafts, double heat-treated and micro-finish ground for precise geometry, consistent motion, and long-term wear resistance.
• 1.450 in. rocker length with 0.000 intake and exhaust offsets for accurate fitment and dependable valve train alignment in matched cylinder head setups.
• Steel construction resists heat-related strength loss better than aluminum, helping extend service life in endurance, marine, dirt track, and severe-duty racing use.
• Compatible with needle-bearing roller tip configuration to reduce friction, improve valve control at higher RPM, and lower valve guide, stem, and spring wear.