sandro arellano

iTrader: (3)

just as the thread name says, is 10 pounds of boost safe on my 10.9:1 compression engine? has a forged bottom end and is making about 420 rwhp right now. 238/232 cam and 1.5 stage ported heads.

brad8266

iTrader: (23)

I wouldnt do it. With the higher CR I would spray it.

sandro arellano

iTrader: (3)

any reason why? dangerous for the motor? how about 7#

calongo_SS

iTrader: (7)

High compression + boost = detonation = boom

sandro arellano

iTrader: (3)

i understand that but i have seen stock motors, which are 10.1:1 running 10 lbs, what could i get away with?

calongo_SS

iTrader: (7)

I honestly don't know, I'd guess 5-7 psi w/ a good tune. TTT for ya, maybe someone else will know.

sandro arellano

iTrader: (3)

i will also be running the pisc ati kit with the twin intercoolers, dont know if this will help any...

Nine Finger 02 Z28

iTrader: (11)

I am currently running 10.5 to 1 with 20#'s of boost with a SBC but this is a track only Car on C 16 Race Gas.Not a Street safe set up though.

sandro arellano

iTrader: (3)

so what do you think about 10 pounds on 91 octane?

sandro arellano

iTrader: (3)

oh and what the hell does TTT mean?> hehehe

sandro arellano

iTrader: (3)

my bottom end is forged for the power and survival of the pistons but would detenation be a big concern>>? or with a good tune is it doable?

sandro arellano

iTrader: (3)

what about 7 pounds? is this more fisable?

Nine Finger 02 Z28

iTrader: (11)

I would say no.But not impossible would have a lot to do with how well it was tuned and how much total timing that you will be able to run.Also has alot to do with weather conditions because it will run hotter in the summer which would even make it even tougher.

sandro arellano

iTrader: (3)

7 pounds?? is this still in the danger zone?

sandro arellano

iTrader: (3)

really?? so if i end up getting the ati kit with twin intercoolers the 7 pounds should be ok???

Nine Finger 02 Z28

iTrader: (11)

Yes...

sandro arellano

iTrader: (3)

really?? so if i end up getting the ati kit with twin intercoolers the 7 pounds should be ok???

calongo_SS

iTrader: (7)

You should sell the heads you have, and get some stock or ported 6.0 L heads and then you wouldn't have to worry about it.

smokinHawk

iTrader: (48)

use a 110 octane you might get away with it
READ THE STICKIES FELLER
https://ls1tech.com/forums/forced-induction/208864-turbo-faq.html

EPP

iTrader: (22)

What is the cubic inch of your engine? If it is higher than a 346, you may not be able to get much more than 7 psi out of the P-1SC anyway, depending on the cam profile and cubic inch of your engine. You may also have the smaller 3.5" thick twin high flow intercoolers, which won't be as effective at cooler the compressed air as the newer 4.5" twin high flow intercoolers. You could also go with a large front mount intercooler, which would be less expensive than upgrading to the 4.5" twin high flow intercoolers, and will do a great job at keeping the air cool. Keeping the air cool is one of the keys to how much boost you're going to be able to run. Bob