Crower 74118F Features:

Crower 74118F shaft-mount stainless steel rocker arms for SBC 220 Pro Action Motown 23° heads with 49 cc chambers. Designed for 2.317 E to E and 1.888 E to I valve spacing with 5/8 in. shafts for precise fitment. Precision-machined rocker arms feature 1.480 arm length, .250 intake offset, and .100 exhaust offset. Shafts are CNC-machined from ball race alloy steel, double heat-treated, and micro-finish ground in-house.

Shaft Rockers 220 Pro Act 5/8 In. Shafts, 23° Features:

• Precision-machined stainless steel shaft-mount rockers for SBC 220 Pro Action Motown 23° heads, 49 cc chambers
• 5/8 in. shafts with 2.317 E to E and 1.888 E to I valve spacing compatibility for precise valvetrain fitment
• 1.480 arm length with .250 intake offset and .100 exhaust offset for accurate valvetrain geometry control
• Ball-race alloy steel shafts, double heat-treated and micro-finish ground for rigidity, wear resistance, and stability
• High-temperature stainless steel construction for long service life, reduced deflection, and dependable high-rpm control