I ran C12 with 13.5:1 wth W2 heads.
If you are planning on 14-15:1, C16 would be the choice. unless you switched to methanol
I switched over to methanol and won’t run gas again. Runs cooler and makes more power.[/QUOTE
I love alcohol but I’m going to add something to your post from talking to people way smarter than me. Alcohol makes more power for most. And that is because the tuning window is bigger and more forgiving. For the go fast guys most prefer race gas and some won’t even touch alcohol.
