Crower 74144F Features:

Fits Canfield SBC 23° 220 cylinder heads with geometry-specific shaft-mounted rocker design. Stainless steel rockers with precision needle bearing fulcrums for valvetrain stability. Arm length 1.480 in. with 0.450 in. intake offset and 0.100 in. exhaust offset. Stand ID 024F with sure-lock rocker nuts for precise valve adjustment under load.

Shaft Rockers Canfield 23 Stainless Steel Shaft-mounted, 0.450 In. Features:

• Stainless steel shaft-mounted rockers for Canfield SBC 23° 220 heads, optimized for valvetrain stability and accurate valve timing under heavy loads
• 1.480 in. arm length with 0.450 in. intake offset and 0.100 in. exhaust offset for correct valve stem alignment and reduced valve guide wear
• Precision needle bearing fulcrums with oversized bearings for smoother rocker motion, reduced friction, and reliable high-rpm valvetrain control
• CNC-machined, heat-treated ball race alloy steel construction maintains strength at sustained high temperatures for longer service life than aluminum rockers
• Sure-lock rocker nuts and stand ID 024F configuration support precise adjustment and maximum-lift setups for demanding aftermarket racing engine builds