Just for anyone that's interested I dyno'd my totally standard 250 cup yesterday on rollers that I'm happy with based on other cars results. Not going to get into a debate about dyno accuracy just for me it's a bench mark anyway it made 257bhp and 265ft/lb torque. So spot on IMO.
Sounds about right though, mine was something like 265 running a little lean with a bigger IC before the map.
