What is the limit on the lower priced Crane aluminun roller rockers? I've been running a set for years, just wondering at what lift and rpm level I needed to upgrade.

i bought some crane roller rockers back in 1996 from summit i think i paid like 169 bucks for them and they are still on the race car they are holding well to 7000 rpms with a roller cam with .688 lift..............

Thanks for the info.

Had mine for several years too... Seems to be ok. Little noiser than my compcams crommyly i use now...