Crower 74156F Features:

Crower 74156F shaft-mounted stainless steel rocker arm system for SBF Dart Pro 1 CNC 225 heads, head #13072040, with heavy-duty 5/8 in. shafts. 1.450 in. arm length with straight alignment, .000 intake offset, .000 exhaust offset, and Stand ID #085F for centered valvetrain geometry. CNC-machined ball race alloy steel shafts are double heat-treated and micro-finish ground for strength, stability, and severe racing durability. Fully rollerized design with precision needle bearing fulcrum and hardened tip wheel helps reduce valve stem scrubbing, friction, and guide side-loading.

Shaft Rockers Sb Ford Dar 5/8 In. Shafts For Features:

• Stainless steel shaft-mount rockers for SB FORD Dart Pro 1 CNC 225 heads, fits head 13072040 with 5/8 in. shafts
• 1.450 in. arm length, straight geometry, .000 intake offset and .000 exhaust offset for centered valvetrain contact
• Fully rollerized design with precision needle bearing fulcrum and hardened tip wheel to reduce friction and valve stem scrubbing
• CNC-machined ball race alloy steel shafts, double heat-treated and micro-finish ground for extreme racing durability
• Direct bolt-on system with one-piece intake stands, no machine work required, supports stable high-rpm valve control