Crower 74719F Features:

Crower 74719F shaft-mount rockers fit BBC Trick Flow 280, 320, and 360 cylinder heads with 1-piece intake stands and no additional machine work required. 17-4PH stainless steel rocker bodies feature 1025 heat-treating for strength in high-rpm valvetrain applications. CNC-machined ball race alloy steel shafts are double heat-treated and micro-finish ground for precise alignment and smooth operation. Includes fully rollerized precision needle bearing fulcrums, aircraft-quality 12-point nuts, and Hi-temp alloy lash adjusters with precision thread rolling.

Shaft Rockers BBC 360 Tri Tfs 360 Shaft-mount 17-4PH Features:

• 17-4PH stainless steel rocker bodies, fully rollerized needle bearing fulcrums, heat-treated alloy steel shafts, reduced friction and side-loading
• One-piece intake stands for BBC Trick Flow 280-320-360 heads, no additional machine work required, improved valvetrain stability under load
• 1.650 in. intake arm length, .000 intake offset, .150 exhaust offset, precise geometry for consistent valvetrain motion and reduced scrubbing
• Aircraft-quality 12-point nuts and Hi-temp alloy lash adjusters, double heat-treated and thread-rolled for strength, accuracy, and long service life
• Compatible with 227F intake and 219F exhaust rockers, optional needle bearing roller tip upgrade helps reduce guide wear, heat, and friction losses