RE: Tuning Carter AFB? Should idle be 500 RPM?

Yes 700-800 is right. 500 is way too low, if you're able to get it that low without stalling.

> Date: Mon, 28 Nov 2011 11:37:54 -0500
> Subject: Tuning Carter AFB? Should idle be 500 RPM?
> From: jaltemoose@xxxxxxxxx
> To: 1962to1965mopars@xxxxxxxxxxxxxxxx
>
> Still struggling with tuning my 63 Polara 500, 383, 82,000 miles, 4
> barrel Carter AFB (was a 2 barrel).
>
> I replaced all the plugs and it's running much better. Plugs were all
> fouled evenly. Points were replaced by electronic; not sure what.
> Picture is below.
> https://picasaweb.google.com/115013310552314897903/November262011
>
> I'm no great expert at tuning and I'm following the shop manual and
> Internet info and such. The vacuum gauge is pretty steady at 18,
> which seems pretty good.
>
> The shop manual says idle RPM should be 500. Is this true? I'm at
> about 700 RPM. I can't back off the idle screw any more or it's not
> touching the idle cam. If I lean down the idle mixture screws, I can
> get down to about 500 RPM, but it's running rougher and my vacuum goes
> down to about 12. I would think you want as strong a vacuum reading
> as you can get, true? Is it realistic to have 500 RPM? If so, maybe
> the carb needs a rebuild, or something else?
>
> I should be adjusting the curb idle before trying to adjust the timing, true?
>
> As always, thanks.
>
> - Jim
> Jim Altemose, Long Island, NY
> '63 Polara 500 (Max Wedge)
> '63 Polara 500 (383)
> '65 Belvedere I (Street Wedge)
> '71 Bronco
>
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