Trick Flow 190 Heads, hydraulic roller cam, and pushrod angle Question.

Millions of hydraulic roller lifters in use in production vehicles every day. Every part had its place. Will a solid, or solid roller make more peak power? Probably, but not at an rpm where a street engine spends most of its time.

Everyone has their opinions, and they are valid, just not for every application. I encourage customers to use hydraulic rollers over a flat tappet for street performance all the time, and unless the lifters are failed from dirt (which isn't the lifters fault), they are generally trouble free. Anything solid is going to require adjustment and maintence, which many street guys are not interested in having to do. To each his own.