You can't know what HP it will make with the info you have listed, but you could get estimates from other people who might have similar combinations. Do you know what the actual compression ratio is going to be?
One way that you can estimate the HP is by getting your vehicle weighed and then taking it to the drag strip. There are formulas that can estimate the HP based upon the MPH you run in the quarter mile vs your vehicle weight. I don't know how accurate that will be, but it would give you a number to work with.
Obviously if you have a chassis dyno near where you live you can have it measured that way as well.
With headers and a decently matched tire diameter and gear combination it will probably feel like a decently powerful engine.
People on this board can probably give you estimates about where they think the engine will stop pulling in the upper RPMs, based upon the data you've given.
My guess would be that on a dyno the power will seriously fall off around 5000 rpms. This is a total guess on my part, I have never had an engine on a dyno. I've just read a bunch of Hot Rod magazines and forums :-)
What is your goal for this engine...what type of vehicle will it be going into?
Dan
