Smoother running
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Cross-Country
Joined: May 2002
Posts: 98
Likes: 1
From: Southeastern Virginia
Smoother running
Two things: I have a 79 F100 1 barrel. I replaced the intake spacer with one without the EGR attachement, put on an open breather, and an open air cleaner. I drove the truck to Roanoke (6 hours). What I found was that the engine now runs smoothly (and I'm talking very smooth). Before it had a vibration to it. Part throttle response and gas milage are better to. Why would these changes help the engine run smoother?
Second: During my junkyard scrounging, what I've noticed is (and I could be wrong here) is that the 79 was the last year for that body style, but the 1st year of a new motor series. I found mid 80's Fords with the exact motor my truck has. All the 1978 and older trucks I found in the junkyards have a different motor setup (different airbox, alternator mounting, air pump mounting). This may explain why when I go to the auto parts stores, they're always trying to give me the wrong parts, because my motor is one of a new series.
Second: During my junkyard scrounging, what I've noticed is (and I could be wrong here) is that the 79 was the last year for that body style, but the 1st year of a new motor series. I found mid 80's Fords with the exact motor my truck has. All the 1978 and older trucks I found in the junkyards have a different motor setup (different airbox, alternator mounting, air pump mounting). This may explain why when I go to the auto parts stores, they're always trying to give me the wrong parts, because my motor is one of a new series.
Cargo Master
Joined: Sep 2001
Posts: 3,135
Likes: 0
From: Canada
Smoother running
when you repleaced with air breather with a open air breather more air is forced down into the carb making it run smoother. the more air flow the more power bettwe gas milage
73-79 was 1 era. 80 to 86(?) i think was another. the body was changed to a more boxish look in my view. the 300 6 was basically the same but parts where mounted in different spots
73-79 was 1 era. 80 to 86(?) i think was another. the body was changed to a more boxish look in my view. the 300 6 was basically the same but parts where mounted in different spots
Posting Guru
Joined: Mar 2001
Posts: 1,494
Likes: 0
Smoother running
I'm not sure if you had the EGR up and running, but when you eliminate the EGR you actually get full 300 displacement. The EGR robs a lot of power on the early 300's. If you only swapped the style of spacer and already had the EGR off...the open air filter makes the difference. I went to a MSD box on my '79 and you want to talk about smooth? The 80's body styles are also of a thinner gage sheet metal (helped make the truck lighter). The 80's redesign had some subtle motor system changed but most notable is the computer controls tied into the feedback carb and more than confusing emission systems. Each year in the '80s the systems became more and more inticate with less dependance on vacuum / thermostatic valves and more dependance on sensors and solenoids.
