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 Post subject: Re: 80186
 Post Posted: Tue Feb 21, 2012 7:03 pm 
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Location: Maryland
jmarkaudio wrote:
The 7320 blocks will work, just lower the idle feed, and look over the 2 circuit thread, you need some jets in the t-slot passage of the main body as well.

I threaded the t-slot holes many years ago.
When you say "lower the idle feed", you're talking about the idle feed restiction........with the little brass insert, right? That's at the bottom now and get's fuel from the main well.


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 Post subject: Re: 80186
 Post Posted: Tue Feb 21, 2012 7:51 pm 
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Yes, measure the size, .039 would be a good starting point. It should put the idle air bleeds between .067 and .075, depending on the carb and the needs of the engine.


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 Post subject: Re: 80186
 Post Posted: Tue Feb 21, 2012 8:26 pm 
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7320 block. What should the e-holes be? There are only 2. Why are there tubes in the venturi of a 7320? I thought tubes were the sign of an intermediate circuit. Maybe Holley made the main bodies to be either 2 or 3 depending on the blocks. I think an O2 sensor would do wonders for me. Do you like the LM2?
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 Post subject: Re: 80186
 Post Posted: Tue Feb 21, 2012 8:45 pm 
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The tubes were added if it was converted to 3 circuit. Emulsion will be fine as is. An O2 system/LM2 is a great idea, it will help you see a little better what's going on.


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 Post subject: Re: 80186
 Post Posted: Tue Feb 21, 2012 8:54 pm 
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I bought this carb new way back when so I know there was no conversion.


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 Post subject: Re: 80186
 Post Posted: Tue Feb 21, 2012 10:32 pm 
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I think they put the intermediate dump tubes in ALL those main bodies. Get someone to check on an 8082 and see if it doesn't have them also.

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 Post subject: Re: 80186
 Post Posted: Thu Mar 01, 2012 2:07 pm 
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I did my friends carb and by the time I got to the IFR my friend was done with all the drilling and tapping. I didn't get the IFR modified. He talked me into trying it the way we had it. Once it was warmed up, he was thrilled with the way it ran and idled. It still stinks, but not nearly as bad. He wouldn't let me go back in it. I'm thinking about getting him to put some wire in the IFR, cauee I think the rest of the numbers are pretty close. What do you think? This is a street 460 with a thumper cam.

IFR .054
TSR .052
IAB .073
MAB .036
PMJ 65
SMJ 70
No PV's


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