[tmenees2]

Originally Posted by Jason@JacFab

Fairly certain the 12+ LFX engine has always been 11.5:1 compression. The 10-11 LLT was 11.3-11.4 depending on where you read it.

Check this out: Everything you ever(or never) wanted to know about the LFX engine!

It's hard to find good info on the internet sometimes. I thought I originally read 11.5:1 but when I was looking up 2012 I read 11.3:1. So I thought maybe I was remembering wrong. Either way they are pretty high for a stock engine. So I run E85 in mine and it helped a lot too