13:1 Compression Pistons in 340 Small Block

Backwards thinking, for the last fifteen years there has been an explosion of turbo street cars that run 20 to 30 pounds of boost and before that for a brief period compression was king again all because of e85. I have a couple of friends who own a engine building shop with a pair of dynos, one of them an ex sprint car racer. These two have won the big checks building NA small blocks on e85. E85 is a very contemporary way of building power and there no need to build a motor with less than 12.0 to 1 cr once you make the initial investment converting to e85. It doesn't need to be a willed race motor to benefit from a high cr and e85 look how many new stock vehicles run on it.