Abdullah

iTrader: (2)

i'm going to get harland roller rockers and i will get them non-adjustable due to thier price and fittment under stock valve covers. my questions is which is better the adjustable rockers or the non-adjustable rockers? specialy in terms of performance.

Abdullah

iTrader: (2)

any one?

vettenuts

iTrader: (4)

All things being equal, I would say non-adjustable simply because of their rotational inertia, which I would assume to be lower. However, there are obvious advantages to the adjustable especially if you are running something like the Morel lifters that require a specific preload range. It is easier to adjust each lifter with adjustable rockers.