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Use aftermarket intake with feedback carb?

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Old 03-07-2011, 04:09 PM
arcaidy
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Use aftermarket intake with feedback carb?

Would it makes sense to use an after market intake manifold with a stock feedback carb? I'm in the process of putting my 85 F150 w/ 300 and stock feedback system back to the best it can be. I have changed the O2 sensor and corrected a few other issues and now have what I think to be a decently running feedback system. I averaged over 18mpg during a 100 mile trip crusing over 70mpg and about 30% town driving last weekend.

I'm looking to get the best torque and mileage out of the engine as possible so keeping the single barrel with electronics isn't a problem.
 
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Old 03-07-2011, 04:49 PM
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By aftermarket, are you meaning getting an aftermarket 4bbl intake and then putting the 1bbl back on it?
 
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Old 03-07-2011, 06:01 PM
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Originally Posted by AbandonedBronco View Post
By aftermarket, are you meaning getting an aftermarket 4bbl intake and then putting the 1bbl back on it?
That is correct.
 
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Old 03-07-2011, 06:05 PM
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I don't think you'd gain much from it performance wise (maybe a little, but the 1bbl would limit you). But there are some emissions components that wouldn't be compatible with the 4bbl intake, such as the EGR spacer underneath the carb.

I also don't think there is (although there may be) an adapter to let you put a 1bbl carb onto a 4bbl intake. You'd probably have to go from a 1 - 2 adapter, and then bolt that onto a 2 to 4bbl adapter.

What is your reasoning behind wanting to use one if you're sticking with the 1bbl?
 
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Old 03-07-2011, 06:39 PM
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Just playing with ideas.

The EGR is vacuum controlled and not monitored by the computer as far as I can tell. It was disconnected until yesterday when I traced as many vacuum lines as I could and reconnected them.

I'm curious if doing some of the normal performance mods would help a stock intake, ignition system. I
 
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Old 03-07-2011, 08:59 PM
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I saw an Edelbrock single 1-bbl intake for a 300 once. Feller wanted $300 for it, though.
 
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Old 03-07-2011, 09:04 PM
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Those are pretty cool if you can find them. I know they were made for awhile by a few different companies, but not anymore. So it's just a matter of tracking one down.
 
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Old 03-07-2011, 09:22 PM
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That would be fun to find. I'll try to keep my eye out for one.
 
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Old 03-07-2011, 09:24 PM
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Heck, I wish I just had a picture of the darn thing...
 
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