Curious

Design me a reliable big block that will beat an LS in the quarter. It's already been done.

You built a 68 Barracuda with a 440 and it won't beat the LS? You don't know what you are doing.

Now, design me a big block that will beat an LS in the quarter and get better than 20 mpg...................Oh, and do it for free.

Go away. I won't help you.
won`t happen on the gas mileage ! probly not w/ an overdrive ! LoL