i have an L92 engine that i will be putting forged pistons and rods in , its a direct replacement piston so it'll be a 6.2L with 9.3:1 compression + a tvs2300 im going to run a minimum of 10#'s on 93 octane + meth eventually. i also have a cam spec'd for this setup / compression.

 

You could go higher but 9.3:1 will work just fine and make plenty of power. Personally, if I was replacing pistons I'd shoot for around 10:1 or so.

 

Why would it be to low? You will be able to run more than 10lbs with a good timing curve.

 

x2 !!!

 

I can tell you that the difference from 9.5:1 and 10:1 on my 5.3 is a pretty big difference. You'll be okay with the 9.3:1 ratio, but you've got a good opportunity to make more power if you go 10:1 or even 10.5:1, so that's what I'd do if I was in your shoes.

 

what about if i go 12 psi?

 

Scooter had 10.5 cr and like 15-17# on his 6.0 tvs230/ setup with meth and e85

 

We dont have e85 in this part of the world so thats out.

Im thinking 9.3:1 and 12psi on 93 + meth would be really nice.

 

I don't think you'll be down on power with the right cam and a good tune. With less c/r, you can probably run a little more timing. Where you might come up short is in the around town responsiveness and maybe fuel eco.

 

I would still do 10.1 but up to u