Need Help

[Bronco__79]

Ok i got a bronco which is a freaking beast but it gets shit for gas milage so i am wondering if it woudl be better to go buy a new one or jsut kinda strip this one down and put new stuff on it which maybe be alittle chearper i donnu i am new at this stuff.

Thanks for the helps

Brandon

 

[Bradt]

Depends on what you ahev. You're not gonna get great mileage out of a 5500 pound brick on wheels.

What size engine? What tires? What gears?

brad

 

[Seabronc]

Like Brad said, these things weren't designed with economy in mind. However, Brad is an all time record holder for gas milage in a Bronco ) so He probably can help you out a bit.

We would all be interested in your secrets Brad. :-"

Good luck,

>-

 

[Bronco__79]

lol k thanks guys but i don't know my gears at this moment but i got a 400m with some pretty bald buckshot mudders 36" and i don't really have any hop ups either so its kinda ***** lookngi ut iit drives pretty good when it does work

 

[olDoc]

ok, you prob have an open dana 44 up front with 3:55 gears, and a factory 9in out back with a factory traclok 3:55

you can do anything you want with this rig, as little or alot depending on your budget.

i am running a 1969 ford big block in mine which works out to be 396 cubic in

i am welded up front with 3:55 and i wheel 38 in tractor tires, and daily drive 35 in mud tires.

i get very good gas milage with mine.

i have a 33 gal tank and that lasts aprox 4days ********* wheelin.

milage is not to be expected with these broncos.

i got a buddie that has a fi 5.0 in his 78 with automatic tranny, np203 transfercase, 4:56 gears and 37in boggers, and he can def keep up to me wheelin, and get a heck of alot further than i can on the highway

so its up to you what you wanna do

 

[Johnny Reb]

ok, you prob have an open dana 44 up front with 3:55 gears, and a factory 9in out back with a factory traclok 3:55you can do anything you want with this rig, as little or alot depending on your budget.

i am running a 1969 ford big block in mine which works out to be 396 cubic in

i am welded up front with 3:55 and i wheel 38 in tractor tires, and daily drive 35 in mud tires.

i get very good gas milage with mine.

i have a 33 gal tank and that lasts aprox 4days ********* wheelin.

milage is not to be expected with these broncos.

i got a buddie that has a fi 5.0 in his 78 with automatic tranny, np203 transfercase, 4:56 gears and 37in boggers, and he can def keep up to me wheelin, and get a heck of alot further than i can on the highway

so its up to you what you wanna do

Well I am planning on doing quite a bit on my 78 bronco(with the 400 -automatic transmission) this summer. I am planning a rebuild,with a different distributor,high gear ratio( if I want power--**** I will just put it in second) normal size tires (I would like to lower it--to help get the air out from under neith it(might help the air flow) As it stands now. I only get about 5 mpg. Before ,when I first got it. I had regular size tires and got about 5 mpg and then I put 33,s on it and my mpg went to about 8(couldn,t believe it myself)but I did loose power. Oh well I have about 4 months to try and think things out.Maybe I can beat Brad,s record. Maybe I will swicth engine to a 6 cylinder (I have a 85 with carb ) But I love the smooth ride and how it take to the slick roads.Oh, Buy the way, I can put my trans fer in 4 wheel drive traveing 45mph with no problem at all.

 

[Red Green Jr]

A big mileage cutter would be tire size. If you dont do any extreme wheelin' and do a fair amount of street driving, somewhere around a 31in is perfect. Another thing would be the timing chain assembly, as it was designed to meet emission standards (even back in good ol' 1978/79). a new assembly would give you more power and most likely more efficiency. I dont know what your experience level is so replacing that might be out of your league but a repair manual will walk you straight through it. Also, a smaller gear ratio in your differential would increase your top end speed, cutting down on your RPM's. I would advise against buying a new one being as it will probably get similar mileage. I personally get around 8 mpg's.

 

[Johnny Reb]

A big mileage cutter would be tire size. If you dont do any extreme wheelin' and do a fair amount of street driving, somewhere around a 31in is perfect. Another thing would be the timing chain assembly, as it was designed to meet emission standards (even back in good ol' 1978/79). a new assembly would give you more power and most likely more efficiency. I dont know what your experience level is so replacing that might be out of your league but a repair manual will walk you straight through it. Also, a smaller gear ratio in your differential would increase your top end speed, cutting down on your RPM's. I would advise against buying a new one being as it will probably get similar mileage. I personally get around 8 mpg's.

Believe it or not(mine has a 400 automatic) and it had 235,s on it when I got it and the tank leaked a little. I was getting around--5-6 mpg. Then I got this other 78 bronco that had some big 31 Kelly,s on it and the 234,s were gettiong bad,so I switched them. My mileage went to about 8 mpg,but I did loose power and not being used to the hold with the Kelly,s on the main road. I took off fast one day on 19 N in Summersville,W.Va and almost oput it on its side. Kind of hairy going down the interstate on 2 wheels. haha,but I am gonna do some changing the gears and a few other things hopeing the mileage will i=mptove.