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Old 09-23-2010, 10:16 PM   #1
miclau
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Default NOS jetting chart

does anyone have a NOS jetting chart? I have a big shot plate set-up and need to see what jets I need to get to have a couple different tune with me.

Thanks
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Old 09-23-2010, 10:56 PM   #2
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Default Re: NOS jetting chart

What power levels are you looking for ?? SJ
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Old 09-23-2010, 10:58 PM   #3
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Default Re: NOS jetting chart

Looking for 250,275,300 and maybe more if you wanna get crazy LOL
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Old 09-23-2010, 11:02 PM   #4
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Default Re: NOS jetting chart

go to the website and click on big shot, then scroll down and click on instructions...its all there, they're the new jet charts
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Old 09-23-2010, 11:21 PM   #5
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Default Re: NOS jetting chart

all the jetting is on the Holley site
Go under Brands....NOS
then go under products....Caburated nitrous systems....big shot plate
then click on the "instructions"
scroll down they have nice new jetting charts that you can print out if you have a printer
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Old 09-23-2010, 11:22 PM   #6
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Default Re: NOS jetting chart

75n 67f
78n 70f
those have worked well for me at 5.2 flowing
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Old 09-23-2010, 11:38 PM   #7
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Default Re: NOS jetting chart

here ya go
http://www.holley.com/data/Products/...061-1-SNOS.pdf
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Old 09-24-2010, 07:46 AM   #8
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Default Re: NOS jetting chart

AND THIS IS THE OLD CHART WITH 5.5 PSI

http://www.angelfire.com/fl4/pontiac...alculator.html
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Old 09-24-2010, 12:11 PM   #9
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Default Re: NOS jetting chart

Might be a dumb questio, but on all the charts y'all listed they show a bigger fuel jet than a nitrous jet. Isn't backward ?? Seems like other threads I have read show a bigger n2o jet than fuel ??
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Old 09-24-2010, 01:22 PM   #10
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Default Re: NOS jetting chart

Quote:
Originally Posted by miclau View Post
does anyone have a NOS jetting chart? I have a big shot plate set-up and need to see what jets I need to get to have a couple different tune with me.

Thanks
Mike, I have used the new NOS jetting chart and it is a very good place to start.
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Old 09-24-2010, 01:49 PM   #11
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Default Re: NOS jetting chart

Guys, keep in mind, that new charts are bigger on the nitrous side, so any chart you find that is squared, or bigger on fuel, is an OLD chart. NOS also has a very informative new timing chart, that is included with all the new jetting charts. This chart no longer has the "(x) per 100 hp" nonsense that was used before, but is now based on how much you are spraying and how your engine combo is classified in terms of efficiency. So far, it has proven to be a good starting point.

Monte
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Old 09-24-2010, 01:49 PM   #12
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Default Re: NOS jetting chart

Quote:
Originally Posted by n20mstr View Post
75n 67f
78n 70f
those have worked well for me at 5.2 flowing
what HP are these for ?
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Old 09-24-2010, 02:15 PM   #13
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Default Re: NOS jetting chart

I have 82/73 in the kit now. What hp is that ?
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Old 09-24-2010, 02:28 PM   #14
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Default Re: NOS jetting chart

Quote:
Originally Posted by miclau View Post
what HP are these for ?
WELL 73/67 is listed as 190hp on the new chart i think
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Old 09-24-2010, 03:11 PM   #15
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Default Re: NOS jetting chart

82/76 is listed as 225hp. Monte why is the jet chart for a superpower shot un changed?

Last edited by bones427; 09-24-2010 at 03:12 PM.
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