I am looking to rebuild my LS, and move up my N2O shot as well. What I am wondering is how high of a Compression Ratio can I run with a 75 shot on 93 pump gas?

Somewhere around 10:1? If I run 11:1 am I going to need more octane to be safe? tia.

 

sounds about right .i think you can go 11:5 on 93 but i would get it tuned.

 

Yeah, isnt 11:1 or 11:5 fine with 93? But, this is before I add my 75 shot... which is why I think I need to go down to 10:1....?

bump for help

 

im runing 11:5 or 11:7 one of the two and i'll be spraying 100 shot on it but im getting it tuned.

 

we have a car that is running a 140 shot w/ CR of 12.6:1....

Tuned for both c16 and 93.

It is all about the tuning...

 

tuning is the key.