[wilf leek]

I claim to be no stroker guru, but the piston speed calculations (done by the Butcher a while ago) would seem to indicate rev limits of the order of 6000 for a 408 or larger stroker. If you want an 8000rpm screamer, a stroker is not the way to go. For pure track use, the screamer may well be better.

I stuck with the 408 rather than go to the 427 in order to keep the piston rings out of the wrist pin area, and so I could use the longest rods I could to improve that rod ratio (6.2" as I recall, giving a rod ratio just over 1.5 with the 4" stroke).

Due to height limitations under the hood, I can only fit a dual plane Performer RPM, so the engine naturally starts to breath less well from 5500rpm up. If I could fit a Vic jr intake I guess the rpm limit could move up, but I do like the sheer drive-ability of my current set up - it's docile in traffic, but pulls like a demon from 3000 rpm up (would run better low down with a smaller carb). Of course, all this is dependant on the choice of cam as much as anything else.

HTH