Comp's New Hydraulic Roller
The HR met the power numbers of the hydraulic flat-tappet just past 3,500 rpm, and pulled away from there. The HR torque numbers cleared 500 lb-ft at 4,400 rpm and maintained the high grunt factor past 5,000. The HR-equipped Poncho kept making 500 lb-ft until 5,200, and maintained high 490s until 5,500. The hydraulic flat-tappet design never made it to 500. It was in these same 5,000-plus rpm points where horsepower differences were most obvious too. The HR kept making power almost all the way to 6,000 rpm, while the similarly-sized hydraulic flat-tappet began to level off. Without sacrificing anything, the HR made more power on the top end.