Keith Craft 482 8 Stack EFI Engine Build

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Originally Posted by Anthony

Beautiful engine.

I was thinking about changing my solid roller over to a hydraulic roller. From the dyno sheet, it looks like the max rpm is about 6000 rpms? Is that about the max for a hydraulic roller?

I always thought the reasons ford extended the intake into the head area was maybe a weight advantage, by substituting an aluminum intake , having the intake larger, and the heads smaller ?

They hydro's can not take 6,000 (+) rpm's. They will break apart and cause major damage, of course. If you consistently run high RPM's, that's where a solid roller is made for. Keep a hydro under 6,000 and they are fine.