| Re: [GMCnet] 16.5 to 1 lean burn cruise isn't a problem with the Howell/GM system. [message #324243 is a reply to message #324205] |
Fri, 22 September 2017 20:15   |
Kosier
Messages: 834
Registered: February 2008
Karma:
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Senior Member |
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Yes I do. I did a lot of twiddling with the carb, but I think the jets are
still stock. I think
you need a heavy enough spring under the power piston that it raises the
needles as
soon as the vacuum drops very much. I also have the J & S Knock Eliminator
since
I'm rather deaf. Maybe it is really "dumb luck".
Gary Kosier
77PB w/500Cad
Newark, Ohio
--------------------------------------------------
From: "Justin Brady"
Sent: Friday, September 22, 2017 1:33 PM
To:
Subject: Re: [GMCnet] 16.5 to 1 lean burn cruise isn't a problem with the
Howell/GM system.
> Kosier wrote on Fri, 22 September 2017 11:00
>> Dick Balsley, who spent his whole career with GM, said that Gm calibrated
>> carbs for a 16.2 ratio. They liked 16.5, but production tolerances
>> kept them at 16.2. The Q-Jet on my Cadillac engine has been running at
>> that
>> figure for 10+ years. Call it "dumb luck" if you want>
>>
>> Gary Kosier
>> 77PB w/500Cad
>> Newark, Ohio
>>
>> --------------------------------------------------
>> From: "Bob Dunahugh"
>> Sent: Thursday, September 21, 2017 10:37 PM
>> To:
>> Subject: [GMCnet] 16.5 to 1 lean burn cruise isn't a problem with the
>> Howell/GM system.
>>
>>> Randy Van Winkle is extremely knowledgeable on that topic. And has
>>> data
>>> that shows it's fine with our 403, and 455. You have to remember that
>>> this
>>> system controls the ignition timing. Bob Dunahugh
>>> _______________________________________________
>>> GMCnet mailing list
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>>
>>
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>> GMCnet mailing list
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>
>
> Do you have an afr gauge installed? I've never seen a carb run that lean
> Intentionally even at cruise.
> --
> Justin Brady
> http://www.thegmcrv.com/
> 1976 Palm Beach 455
>
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