Joe wrote:
> have a 1972 Mustang with a 351C, 4-V. I'm replacing the stock
> Motorcraft 4300D that's on it with an Edelbrock 750 cfm, because the
> Motorcraft float is screwed up and the secondaries are frozen shut.
> As the car is now, it won't start with the stock carb. I need to
> determine if the distributor vacuum port on the stock 4300D carb is
> timed (no vacuum at idle) or full (vacuum at idle). Since I can't
> start it with this carb on it, I can't do a simple vacuum test.
> Anyone know if this car has either timed or full distributor vacuum?
> Thanks.
Stock, ported vacuum is used. Your car may or may not have the water temp
valve that switched to manifold vacuum when the water temp gets high, but
normally it's ported.
I use manifold vacuum, but I limit the advance travel to 10 degrees. It's
adjustible using an allen key into the hose nipple.
--
Tom
TS3
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Visit the Cleveland Engine Forum
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attacked, and every man will be glad of those conscience-soothing
falsities, and will diligently study them, and refuse to examine any
refutations of them; and thus he will by and by convince himself that
the war is just, and will thank God for the better sleep he enjoys
after this process of grotesque self-deception.- Mark Twain
"Voice or no voice, the people can always be brought to do the bidding
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being attacked, and denounce the peacemakers for lack of patriotism and
exposing the country to danger. It works the same in any country." -
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12/24/2004
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