How much boost would you run?
I am running to see if anybody had any insight/experience on what a good boost level would be.
Trying to get an initial pulley set up... pretty straightforward... and running whatever the 93 will allow and then backing it down is “figuring out what boost to run” verbatim .... so the contradiction is strange.
And thanks for the tuning “tips”
Just at put it at 10-12 psi with a mild amount of timing and carry on.
A lot of us are throwing 20+ psi at stock bottom ends reliably.. but we aren’t losing sleep over it possibly breaking a stock engine... know what we are doing... and tune it ourselves...
But that’s all mute... because that’s obviously not you or your prerogative. Pulley it to 10-12 and call it a day
- 2005 5.3 L33
- new stock crank
- TSP I beam rods
- diamond racing boost pistons and rings
- ported/polished 799s
- ed Curtis custom boost cam
- Injector Dynamics 1050x injectors
- Cometic head gasket and arp studs
- d1x procharger with intercooler and bypass valve
- Stock LS6 intake and TB
- Built 4L80e with Circle D 3200
- 9.9:1
- 93 octane
I was thinking 10psi.
Will my LS6 intake and 9.9 CR handle this?

P.S. .028 and .030 before y’all get heated over the wrong **** again, smh
Last edited by L33; Nov 5, 2020 at 10:15 PM.
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Just at put it at 10-12 psi with a mild amount of timing and carry on.
A lot of us are throwing 20+ psi at stock bottom ends reliably.. but we aren’t losing sleep over it possibly breaking a stock engine... know what we are doing... and tune it ourselves...
But that’s all mute... because that’s obviously not you or your prerogative. Pulley it to 10-12 and call it a day
i swear most of you are completely ignorant. Sorry for asking a god damn question.
But thanks for answering my question after amping yourself up. Have a good one man
Last edited by ddnspider; Nov 6, 2020 at 07:28 AM.

P.S. .028 and .030 before y’all get heated over the wrong **** again, smh
BTW - Dynamic compression is very relevant to the fuel limitations of 93 octane. Do you know what the DCR is? Without cam specs, no one else knows. To quote your comment from above, "Anyone that would spend the extra money on a custom" cam should install it at the specified ICL too. Unfortunately, many get installed "dot to dot"! What ICL was your cam installed at?
Lastly, 86 gave you excellent advice and you didn't even acknowledge it.
I'd suggest you post your questions on Yellowbullet supercharged forum. You might get a better response there. ; )
Simple answer. If it was my car with forged slugs.. I’d have it on e85 and turned on KILL all the time.
If I was you trying to run pump and hopefully never have a problem... depending on elevation (I say that because I live 5000* ft. I’m already down 2lbs of atmospheric pressure), I’d have it at 10-12psi and call it a day.
I wouldn’t even sweat ring gap unless it was built unnecessarily tight for some reason.. or your going to relentlessly beat on it on a road course (because heat). It’s your built motor so that is pertinent info you should already know anyways. Sounds like your good there 👍
And worried about 10psi on a ls6 intake? Mines taking 20psi+. But so is my completely untouched 2000 5.3 bottom end (wouldn’t recommend lol). So I’d say your fine.
I think your over thinking something that’s been done 100,000 times by other people. I wouldn’t even think twice about pulley’in it to 10lbs and driving the wheels off it. Personally.
Happy?











