The hydraulic roller cam is on the way for my 541 build. It's a mild grind (235/241 .590/.571) and I plan on racking up the miles on this thing. Valve train components are already in motion.

I'm wondering about the timing gear. I know I'll need a thrust limiter (bearing/button) on the timing cover side but what about the back side between the gear and the block? Should I bother with a thrust bearing or washer back there? I like the idea of a bearing but don't like the idea of bearing failure involving scattered rollers.

This is a low RPM build (max 6000 rpm) and will be used for extended drives including occasional road trips.

Where would you put your money on this one?


We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon