Final CR 10.3:1 Max Boost I can run?

[bmo37]

I'm trying to figure the max boost I can run on this engine, its a 347 with all forged internals, main support on a new stock block. I know I can run probably around 6spi but I was going to add a power pipe to kick it up to around 8-9psi and put a by-pass valve on it. No fmu cause I'm running 42lbers and no chip cause I'm going to tweak it with a tweecer. Any ideas?

 

[88stangmangt]

i can see you geting at least 12. i plan to run 12 on my 302 with a dss main girdle but i have a blower cam so i dont want nor need anymore boost than that.

 

[90mustangGT]

I am no expert but I know that what you have to worry about is detonation by the excessive heat caused by the compressed gasses due to compression increases heat. I know a guy with a 2002 SS Camaro that is running 4-5 psi on pump gas. He is getting a intercooler for it and then he will be able to bump it to 8-9 psi on stock boost. If you were running an aftercooler/intercooler I am sure you could run that kind of boost.