351m400 alternatives
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Joined: Mar 2009
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From: Alston, MI
A cold fuel/air mixture will produce more power than a warm mixture.
Conversely a warm fuel/air mixture will produce better mileage than a cold mixture.
For this reason and for fast warmup many manifolds are heated. Heating the fuel will help in cold weather, but in warm weather the fuel can boil in the lines and cause vapor lock. Vapor in the manifold is good, but not in the fuel line.
Conversely a warm fuel/air mixture will produce better mileage than a cold mixture.
For this reason and for fast warmup many manifolds are heated. Heating the fuel will help in cold weather, but in warm weather the fuel can boil in the lines and cause vapor lock. Vapor in the manifold is good, but not in the fuel line.
Posting Guru
Joined: Jul 2007
Posts: 1,355
Likes: 1
A cold fuel/air mixture will produce more power than a warm mixture.
Conversely a warm fuel/air mixture will produce better mileage than a cold mixture.
For this reason and for fast warmup many manifolds are heated. Heating the fuel will help in cold weather, but in warm weather the fuel can boil in the lines and cause vapor lock. Vapor in the manifold is good, but not in the fuel line.
Conversely a warm fuel/air mixture will produce better mileage than a cold mixture.
For this reason and for fast warmup many manifolds are heated. Heating the fuel will help in cold weather, but in warm weather the fuel can boil in the lines and cause vapor lock. Vapor in the manifold is good, but not in the fuel line.
Hey Danlee, since you are one of te most if not the most experienced guy with these engines around here, i have a question, what would happen if a 400 is ran with no thermostat? would it overheat?
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Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
Yes, most vapor lock occurs where the fuel line crosses the hot motor. Some people wrap the fuel line with aluminum foil to prevent the engine heat from reaching the fuel.
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Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
Without a tstat or with the wrong tstat the back cylinders can become starved for coolant, because most of the coolant short circuits and returns to the radiator. This will eventually result in head gasket failure in the rear cylinders,
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