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Forced Induction Superchargers | Turbochargers | Intercoolers
View Poll Results: What Boost
7lbs
4
8.51%
8lbs
21
44.68%
9lbs
10
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10lbs
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25.53%
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Another Boost question POLL

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Old 06-11-2006, 04:07 PM
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Default Another Boost question POLL
What max boost with a turbo would you guys run on a stock bottom end with lq9 heads, intank fuel tank, injectors, ls7 clutch and a 232/228 .595/.588 115lsa turbo cam?
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Old 06-11-2006, 04:12 PM
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Boost is also relative to flow. Like on a supercharger with a fixed pulley porting those same heads will make the actual manifold pressure go down.
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Old 06-11-2006, 04:19 PM
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i would say 9 pounds if u didnt have the cam and 8 with the cam
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Old 06-11-2006, 04:31 PM
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yeah i have a big cam
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Old 06-11-2006, 05:17 PM
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alot of it depends on if you run meth injection or not and what size turbo.
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Old 06-11-2006, 10:40 PM
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it looks like i am going to keep it at 8psi, wonder how much power I will be making....
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Old 06-12-2006, 11:52 PM
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anyone interested in the poll
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Old 06-13-2006, 05:52 AM
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As SuperZ asked..... will you be using meth.... what size turbo?
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Old 06-13-2006, 06:53 PM
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I say 10 psi. I ran 10 for a while on a stock bottom end with a SC. No problems to report.
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Old 06-13-2006, 07:23 PM
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no meth and the turbo is a t76
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Old 06-13-2006, 10:49 PM
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Have run 10.5 for 10k miles, with no issues what so ever.
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Old 06-14-2006, 02:13 AM
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The votes are between 8 and 10... how about 9? Just want it to be safe, not exactly rich or anything, and this stuff is expensive...
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Old 06-14-2006, 05:49 AM
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LOL Ask me what happened to my TA when I started running 10lbs plus on almost that exact config.....
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Old 06-14-2006, 03:47 PM
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I actually now remember reading your post a while back, sorry about your engine dude. The numbers on your sig what boost level was that??
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Old 06-16-2006, 09:08 AM
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I didn't see an option for 12 #'s.

You can run more than 7-8 lbs if you've lowered your CR and run good fuel. It was explained to me that it can be safer to run more boost with a convervative tune than run low boost and a walls to the wall tune.
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Old 10-07-2007, 11:54 AM
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Originally Posted by 2002/Black/SS
i would say 9 pounds if u didnt have the cam and 8 with the cam
i would like to know the basis for this that going from a stock cam to a 23X cam drops 1 psi
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Old 10-08-2007, 03:37 PM
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where is the 15psi option?

10PSI will be OK with a good tune. The tune is the most important part of the setup.
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Old 10-08-2007, 03:41 PM
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Mine didn't fare well at around 8 psi...stock heads, though.
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Old 10-08-2007, 03:42 PM
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If you want it to be "100%" reliable, run 8. I ran 8 and started getting KR on my rig, a lot to do with tune. I ran 5 and didn't get KR, so... I also believe 10psi is doable with a correct tune, none of this mail order stuff.
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