High Compression 390

1st is 6.68 and 2nd is 3.34, 3rd is 1.66, easy to remember ratios. It is a farm truck! But west of the Kansas state line they are called “ranches”. I get horse feed with it. Lol. Trucks are hot right now . Don’t you watch Barrett Jackson? Lol.

I run ethanol free 87. Which is available in my county. And the truck will prolly never go less 5000 feet above sea level. And will go to 9000 more than 5000.

But all of these opinions is why I am struggling, some say 11:1 is no problem. Some say I will need a really big cam and some say don’t build it at all.