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By cliffs 56 lincoln - 10 Years Ago
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I have a 56 lincoln with a 368 and have changed distributor to a 57 style and carb to a holley 600 but for some reason I can only get 16 inches of vacum at idle. I disconnected the brake booster to check for leaks there but I only found very small vacum leak at carb base. Could this leak cause me to lose this much vacuum?
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By Ted - 10 Years Ago
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16” Hg vacuum at idle sounds good from this end. What rpm are you checking the vacuum at?
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By Talkwrench - 10 Years Ago
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Foot on the brake and in drive? Mine [292] is about that.
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By cliffs 56 lincoln - 10 Years Ago
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700 rpm i thought i was supposed to have around 18 to 20 inches for the power brakes to work properly
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By 314 - 10 Years Ago
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16 will work with your brakes but you should be close to 20 on a stock engine.did you ever check it before.slow in time will do it as well.
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By GREENBIRD56 - 10 Years Ago
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How is the initial timing set now that you have the newer distributor in place? Because the Fords have the ported vacuum set-up, idle can be a bit retarded on spark. Using 10º initial is popular on the smaller Y's.
if you watch the vacuum gauge while judiciously turning the dizzy - you might get some useful information.
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By cliffs 56 lincoln - 10 Years Ago
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iam at 5 degrees initial timeing
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