Since I'm a Ford Guy...you know what my vote is...
With that being said, I have some info that I would like to share...which may or may not be similar to Chevy offerings...
Hi RPM Small block Fords are not new... us mustang guys have been doing it since the 90's for our "street/strip stuff"..although the 9,000 rpm goal is a little higher than the 8,000-8,500 rpm that is typical to our genre...
BUT...here are several links that show it can be done, given the correct components...
Anderson Ford Motorsport sells "off the shelf" hi rpm cams with mild ramp rates for use with OEM style hydraulic roller lifters capable of going to 9,000 rpm... http://www.andersonfordmotorsport.com/
Here is one of my favorite Hi rpm...Hi Horsepower combos using Andersons cams: http://www.andersonf...Marnold359.html
And Marc Arnold's website can be found here: http://www.the-arnolds.net/Cobra/
That should give you some ideas on HOW to make the Ford combo work.
Just be advised that almost ALL serious Ford guys scoff at the idea of trading HP capability for rpm...the question is always "Why do you want to rev to 8,000 when you can make the same power at 6,000 ??? "
If you don't care for "maximum horsepower", then the Anderson cam profiles (like the N-111,112,113) will most assuredly get a smaller stroke, smaller displacement motor spinning to the 8,000 plus rpm range all day long with the correct intake manifold (correct runner length for Hi rpm use). Anderson would just have to grind the stick for the modified firing order.
The Anderson grinds are tame by todays standards and much more power CAN be made...but their purpose is Hi rpm power.
On engine components, I would think any "good" I-Beam or H-beam rods with ARP 2000 bolts should do the trick and the next stronger bolts most assuredly will. (a 3" stroke puts you @ 4500 ft/min)
5.4" Ford rods are commonplace and 1.3" compression ht. pistons are too...http://kb-silvolite....php?action=diam
This would give a 1.8 rod/stroke ratio with a standard 3.0" stroke in a 8.2" deck ht. block....using off the shelf components.
If you wound up going with an aftermarket crank, you could use:
-a 3" stroke 302 crank with Chevy (2.1") or Honda (1.88") rod journals
-a typical 1.090" compression Ht. piston from a 347 stroker kit
-a 5.596 351 Windsor rod (stock 351 Windsor length but needs journals to match crank)
This would get you to a 1.87 R/S ratio and a deck ht. close enuff to play with, even with a block that has been surfaced a few times ( 8.186" deck vs. 8.2" nominal)
I'm still going to look into the cranks...but it is probably going to take a while.