partime conversion mpg???
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partime conversion mpg???
can anybody tell me what kind of fuel economy to expect on my 76 f250 with a stock 2bbl 390 auto if i put a parttime kit in the transfercase lockout hubs. and does anybody have anyother tips to improve my fuel economy besides tieing baloons to my foot.
highrider
highrider
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From: Albuquerque
Well...lets start with what you are getting now? (10-12???) You might improve by 2 mpg...if you keep your foot out of it. As a 390FE owner...from experience the FE's do not give great mpg, but they do give great torque. I prefer the torque!...and live with the mpg.
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mpg
well when i beat on it i ussually get around 4 mpg but i made one 4 hour trip
and got around 11
would a 4bbl carb help if i stay out of the secondaries?
i'd love to get 15-17 mpg
and got around 11
would a 4bbl carb help if i stay out of the secondaries?
i'd love to get 15-17 mpg
Last edited by highrider76; May 24, 2004 at 11:56 AM.
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Joined: Feb 2002
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From: East Bend, Carolina, U.S
I can't say how much a 4V carburetor will help an FE, but it did help a 302 I had in a 72 Torino a lot with a 273:1 rear gear. The 302 with a 2V 
carburetor got around 18-22mpg on the highway depending on traffic. I installed a 4v Holley carburetor, edelbrock intake manifold and headers. The mpg went to (believe it or not) 24-26 mpg on the highway! The mpg went down to nothing if I used the full capability of the 4V carburetor.
I would say a 4V would help your mpg some, but not sure how much.
carburetor got around 18-22mpg on the highway depending on traffic. I installed a 4v Holley carburetor, edelbrock intake manifold and headers. The mpg went to (believe it or not) 24-26 mpg on the highway! The mpg went down to nothing if I used the full capability of the 4V carburetor. I would say a 4V would help your mpg some, but not sure how much.
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Joined: Sep 2003
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From: Albuquerque
Originally Posted by highrider76
well when i beat on it i ussually get around 4 mpg but i made one 4 hour trip
and got around 11
would a 4bbl carb help if i stay out of the secondaries?
i'd love to get 15-17 mpg
and got around 11
would a 4bbl carb help if i stay out of the secondaries?
i'd love to get 15-17 mpg
4v carb -- 600 cfm (Edelbrock or Holley
intake manifold -- Edelbrock Performer
headers -- FPA Headers
Cam, lifters, push-rods, double roller timing chain -- Edelbrock Performer Series
If you were to do all that...you would probably see the increase that you want. Of course that is if you have the timing dead on! What this package does is allow the 390FE to breath better...which results in better burn and better removal of the burnt gases.
Have fun with it...
