99 Blue Bird

iTrader: (3)

im building a forged 370 iron block and want the compression around 11.1. my question is will a 11.1 motor be ok with 10-15 lbs of boost out of a turbo? not to familiar with the forced induction set ups. all i know is the lower the compression the more boost you can run. but im not tryin to run something crazy like 28 lbs or something. so any info would be great. thanks everyone.

The Fugitive

iTrader: (6)

what kind of car all drag DD etc? I would say try to get somewhere from 9.0 to 9.5 CR but we would need more info on your set-up and what it's being used for.

Z-28

Sound like u might wanna run race gas for that setup

robert miller

Without more info I wouldnt want too go over or much over 12psi and put a D/nozzle of meth too the car.With a little less timing. then work up a little into it.

jason02Z

iTrader: (10)

sure lots of meth or if you can get a good fuel system and e85..

G Engines

IMO thats to much compression for boost I stay between 9.5 to 10.0 and run a meth set up on it.

EPP

iTrader: (22)

http://www.exoticperformanceplus.com...Car.php?car=39

Here is an APS Firehawk we built that has an 11.0/1 engine. I agree with what everyone has posted, I would drop the compression ratio down into the 9.5/1 range. Bob

99 Blue Bird

iTrader: (3)

the car is gonna be a street car. not really a dd but if i want to dive it i just want to jump in and go. since i live in california the only turbo set up i can use is the sts rear mount set up since it has a CARB legal #. the motor will be around 10.8 cr but when i mill the heads will bring it around 11.1-11.5 depending on how much i mill them. heads will be TEA cnc ported 243 castings or the PRC 215 castings. i will be using a tpis LS6 ported manifold as well. and will be keeping my exhaust manifolds on the car. will be ported. all smog parts hooked up as well.

The Fugitive

iTrader: (6)

okay so the big question would be is what is your HP goal? That would make the difference with how much boost you throw at the car. Plus if you are wanting to make some serious HP then I would say go with the 317's to lower compression.

383lt1impala

iTrader: (33)

u have to run really good fuel and have a really good tuner... i plan to run only 10psi with 12.5 compression. on c16

smokinHawk

iTrader: (48)

https://ls1tech.com/forums/forced-in...turbo-faq.html