Round tracks used to use a P & G machine to "pump up" a engine. (it used air to measure the volume) If you know any round track guys local, you may ask them. Not sure if they're used any longer, with so many tracks using "crate" engines (which are sealed). Most just make you pull a cyl head if any question.
But like others have said, it's just a number. What matters is how it runs.
Brian
That's what they used at our local dirt track.
My late machinist used to run in a 6 cylinder class back in the 70's. Engine of choice was 292 GM, 300 cube limit IIRC.They noticed when tech checked an engine, they only ever pumped #1 cylinder... Out came the engine, crank sent out to have journals 2 thru 6 offset ground to as much stroke as could be accommodated by whatever junkyard rods and shelf pistons were available.
She was a winner! Lol
Kevin
