[bomariam1]

Before going to pulley change, what is the maximum boost we can get from the stock SC?
I think that GM controls the boost through baypass valve.

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[bomariam1]

So no one knows?


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[hawk02]

According to this web page, max boost for the stock supercharger is 9.2-9.7 lbs.

http://www.onallcylinders.com/2018/0...ads-cam-specs/

[Markoz28]

I thinking boost is controlled by blower speed. From what I’ve seen 9-10 PSI is max on stock set up. And, may be more like just shy of 10psi

[joe944]

Using the Cosworth Pi Toolbox looking at PDR's it seems to regularly hit a max boost of 10.4.

[kttxz06]

Originally Posted by Markoz28

I thinking boost is controlled by blower speed. From what I’ve seen 9-10 PSI is max on stock set up. And, may be more like just shy of 10psi

Huh? I'm running 17lbs right now. Well, in this heat, more like 15lbs. Of course, I have heat soak like a SOB. haha. Too bad it's all gone on Monday!!!!!!!!!!! Woo hoo. Hella boost is in order.

[bomariam1]

Originally Posted by Markoz28

I thinking boost is controlled by blower speed. From what I’ve seen 9-10 PSI is max on stock set up. And, may be more like just shy of 10psi

I have seen on my log up to 10.5-10.8, several time on WOT.
that's why I posted this question.

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[Can'tHave2MuchHP]

Originally Posted by kttxz06

Huh? I'm running 17lbs right now. Well, in this heat, more like 15lbs. Of course, I have heat soak like a SOB. haha. Too bad it's all gone on Monday!!!!!!!!!!! Woo hoo. Hella boost is in order.

They’re talking bone stock/no mods...

[kttxz06]

Originally Posted by Can'tHave2MuchHP

They’re talking bone stock/no mods...

Oh, my fault. I thought they were wondering how far you could push it.

[Markoz28]

I’m sure some cars are seeing mid to high 10 psi but they are probably in better air/temps. I live in south Tx and I don’t mean San Antonio. I’m talking like 15min from Mexico kinda of south. If I’m seeing 10psi that’s amazing. for sure you can spin it more with pulleys but stockset up 9-10psi

[bomariam1]

Originally Posted by Markoz28

I’m sure some cars are seeing mid to high 10 psi but they are probably in better air/temps. I live in south Tx and I don’t mean San Antonio. I’m talking like 15min from Mexico kinda of south. If I’m seeing 10psi that’s amazing. for sure you can spin it more with pulleys but stockset up 9-10psi

I guess so.
Thanks all.

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[EDFHOBBIES]

9.6 advertised for a LT4

Lower pulley swap w 9.17 I usually see data logging (18.5 minus 6.7) or 11.8 psi... It got it higher doing some test pulls for Vararam intakes with there prototype I want to say 19.3. But 18.5 is with a cut box w a green filter. When it was stock I saw up to 10.3 depending on the intake I was running.

[bomariam1]

Originally Posted by EDFHOBBIES

9.6 advertised for a LT4

Lower pulley swap w 9.17 I usually see data logging (18.5 minus 6.7) or 11.8 psi... It got it higher doing some test pulls for Vararam intakes with there prototype I want to say 19.3. But 18.5 is with a cut box w a green filter. When it was stock I saw up to 10.3 depending on the intake I was running.

I saw 9.7 goes to 10.3 for short time and Vick to 9.7.
After readjusting the baypass valve, to goes to 10.8. but return to 9.7.
This is why I posted this thread, I feel that stock SC can go to 11psi with tuning.



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[Voodoo8617]

Originally Posted by kttxz06

Huh? I'm running 17lbs right now. Well, in this heat, more like 15lbs. Of course, I have heat soak like a SOB. haha. Too bad it's all gone on Monday!!!!!!!!!!! Woo hoo. Hella boost is in order.

You are running 15psi with a stock blower??? Im curious about the stock blower limit.