Anyone running compression over 10.5:1 with a FI setup?
Are there any pros to running more compression with FI?

 

depends on the blower. you want to run as much compression as possible. if your blower is only capable of say 10 psi than you can run as high as 10:1 or so with tuning and intercooling. it's all in your setup. more compression offers better driveability and more power. going with say 8:1 and only 10psi is going to be considerably slower than 10:1 with 10psi.

 

thats good info I didnt know that
Ive been looking into a power adder on my NA setup Id like to go with a sc but I doubt Ill get that much boost out of one on a 5.3 with 10.5:1 compression. wanting to stay away from a turbo

 

as a good example, the radix isn't capable of overboosting a 6.0L due to cfm reasons. look at the numbers the silverado SS trucks are putting down with a 10:1 comression engine and boost. with a radix and a small pulley they put down an outstanding amount of power.

 

https://ls1tech.com/forums/showthread.php?t=321701

interesting setup 10:1 running high boost but its a built c5r