No, it just means that it will be approximately 2 car-lengths quicker in the quarter-mile than it would have been if you'd kept the stock bore.
Two car-lengths is a lot...:cheers:
You'll also pick up 6.2-percent on your compresion ratio. If it was going to be 10:1, now (with the overbore) it will be 10.62:1.
More is better, normally-aspirated.
