Can't use roller lifters with the weight I'm running. I get a small weight break with iron heads and flat tappets. We have a wide variety of engines styles from the 600 HP-ish WISSOTA style mod engine I run to a 360" spec motor to 900 HP 11 degree 410" open motors costing $40,000 and up.
I don't know of any rocker arm I would trust besides T&D, Jesel or maybe Crower running 425lbs. over the nose for 50 laps on a big half mile @ 72-7500 rpm. The Mopar rockers that were on it before worked great at 6 grand...
