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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Transmission Vacuum

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Old Oct 15, 2011 | 11:28 AM
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Transmission Vacuum

I have a 302 with a 4 barrel carb. No emissions are left in this thing its just an engine and a carb with an electronic ignition system so no vacuum advance on the distributor. I plugged the vacuum ports on the carb. The only connection I have to the carb is pcv valve, fuel line, and brake booster.
Where is the best place to run my vacuum line from my auto transmission? Should I run it in to the intake manifold or splice it in with the brake booster connection? Or should I plug both in to the manifold and plug the brake port on the carb? Any advise?
 
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Old Oct 15, 2011 | 03:49 PM
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I ran mine to the tee on the back of the manifold on my 351 and it works fine, but then again I have all my emissions stuff still on. Runs too good to take it off.
 
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Old Oct 15, 2011 | 07:07 PM
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It doesn't make a difference, the brake booster line and the intake both provide full manifold vacuum. I have mine on one of the ports at the back of the intake.
 
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Old Oct 15, 2011 | 07:19 PM
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