Blow through big block.. Jetting ?
#1120145
11/23/11 11:23 PM
11/23/11 11:23 PM
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Joined: May 2011
Posts: 625
Oakville, Wa
HOTMOPR
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mopar
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Oakville, Wa
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My set up is a 493" 8.5-1 with a 980 holley. Can anyone give me a idea where to start with the jetting? I have the carb set up to run well N/A right now. Do I just add a bunch to the secondaries and go from there? It will have a uego on it so I will be able to monitor the AFRs. Any help would be great! 
Last edited by HOTMOPR; 11/23/11 11:24 PM.
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Blow through big block.. Jetting ?
[Re: CUUDAK]
#1120148
11/24/11 01:50 PM
11/24/11 01:50 PM
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Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto
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Plymouth Meeting, PA
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how much boost? power valve? if yes How big is the powervalve passage? Street? race only?
BB, TT5,Procharged 3300lb Street Car 4.79/154
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Re: Blow through big block.. Jetting ?
[Re: bigtimeauto]
#1120149
11/24/11 03:20 PM
11/24/11 03:20 PM
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Oakville, Wa
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Quote:
how much boost? power valve? if yes How big is the powervalve passage? Street? race only?
probably 15-18 max. What do you mean by the passage? is that the holes I need to drill behind the PV? I am doing the hanger18 mods.. yes power valve unless I hear different. Its mostly race but I want to be able to throw some pump petrol in it and hit the cruise night.
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Blow through big block.. Jetting ?
[Re: bigtimeauto]
#1120151
11/25/11 02:20 AM
11/25/11 02:20 AM
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Joined: May 2011
Posts: 625
Oakville, Wa
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yes gas. Thanks! by the way what are you running in the dart? Stock block? how much boost/ Just curious what a stock block will handle? I am sure my components are good for more than the block can handle.
Last edited by HOTMOPR; 11/25/11 02:23 AM.
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Once you get the afr gauge installed then you will get a baseline then you can start playing with the jetting, accelerator pump cams,air bleeds and so on. With a 980 you may not even have to touch the air bleeds! Remember, you don't need as much carb when boosted. Just for giggles if you have an 850 laying around put that on it and see what happens but not before you get that Uego hooked up!
