A couple of handy calculators for builder/racers.

[mopower1958]

http://www.bid2race.com/DynamicCompressionRatioCalculator.php


This is a calculator to use when you change cams or pistons. It determines Dynamic compression which is the actual compression of an engine as it runs. If you change to a long duration camshaft it lowers the DCR. I used it on the Coronet engine to determine how much cam I needed to be able run pump gas with 11.5 static compression ratio.

http://4lo.com/calc/dynocalc.htm


This one is to determine horsepower by E.T. and MPH.

 

[JTS VENOM PERFORMANCE]

Killer:rock:

but I run outta fingers:dontknow:

 

[SilvrSRT10]

OK, so that means my truck must weigh 7720 lbs. 14.5 1/4 and we know the truck makes 500 HP means my truck weighs 7720. That's my story and I'm sticking to it. It's been mathematically proven.

 

[mopower1958]

OK, so that means my truck must weigh 7720 lbs. 14.5 1/4 and we know the truck makes 500 HP means my truck weighs 7720. That's my story and I'm sticking to it. It's been mathematically proven.

Try the MPH if you stayed in it on that pass.

 

[SilvrSRT10]

Try the MPH if you stayed in it on that pass.

It was my very first run ever in anything and I sucked. I know the truck has more in her. My second run I was spinning badly and my third run I did the dreaded 1-2-1 shift (B&M). I haven't made a run that I could make an accurate calculation with. But there's always next time.