Chevy 250 six rocker question!

[Pkupman82]

I can get my hands on a set of rocker arms from a 250 six for free, and I want to install them on my 300. I understand there are quite a few of you guys who installed them on motors with the stock camshaft. I however am running an RV type cam in my truck. If I install these rockers in my motor am I in danger of valves hitting pistons? I am still running the stock dished pistons fyi also. I am also concidering installing an adjustable timing gear set, if I do this should I be concerned about valves hitting pistons with the 250 rockers and straight up timing? BTW if i go to the 250 rockers, do I need to change pushrods?

[bigbrown84truck]

your problem with clearence will be more with hitting the valve cover. it will be really close. without having the specs on your cam we can't tell exactly how close.