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05-17-2012, 04:38 PM
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#1 |
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Registered User
 
Join Date: Oct 2010
Location: Portland, or
Posts: 387
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71 Bronco help
I am going to be rebuilding my 71 bronco for my wife after i complete the suburban.....
does anyone else have a bronco or any experience or knowledge? i am thinking about swapping from a 302 to a straight six. dont know the benefits of one over another (300, 200, 170) this is it currently but will eventually look like this one from "Overhaulin"
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Chuck 
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05-17-2012, 07:14 PM
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#2 |
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Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: 71 Bronco help
That's a pretty desirable little truck you have there. There is a lot of repop stuff for them, too (almost like an early Mustang). I've had a couple of them, but they were all flips; I never kept one or did much to them. I think the 302 would be a little more desirable over a 6. I would keep that if it were me.
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1974 Jimmy- 5.3/4L80e/NP241 |
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05-18-2012, 12:26 PM
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#3 |
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Senior Member
Join Date: Feb 2003
Location: Gold Canyon Arizona
Posts: 4,278
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Re: 71 Bronco help
been there done them.. keep it stock! 302 will get as good milage as inline 6. heres pic of one of my old ones, dave
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1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey |
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05-18-2012, 04:41 PM
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#4 |
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Registered User
Join Date: Nov 2010
Location: Rustville USA or southeast Ia
Posts: 654
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Re: 71 Bronco help
If you do decided to go the inline 6 route, you can't go wrong with a 300. IMO one of the best motors ford put out.
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Rust is better than rice. 
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05-20-2012, 06:31 PM
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#5 |
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Registered User
Join Date: Oct 2010
Location: Portland, or
Posts: 387
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Re: 71 Bronco help
do you think a 300 six with stock fuel injection would get any better mileage?
and what about the 170 or 200 i thought those were famous for fuel economy
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Chuck
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05-21-2012, 03:29 AM
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#6 |
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Senior Member
Join Date: Sep 2004
Location: Wakaw, Sask, Canada
Posts: 3,173
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Re: 71 Bronco help
Decent mileage in a light car like a Falcon or Mustang. Heavy Bronco? Forget it..just build it to be fun and keep the 302.
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"You can take the man out of PA, but you can't take PA out of the man" |
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05-21-2012, 03:54 PM
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#7 |
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Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: 71 Bronco help
I always thought a 5.0 HO would be cool in an early Bronco, especially with an AOD or something similar.
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1974 Jimmy- 5.3/4L80e/NP241 |
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05-22-2012, 09:29 AM
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#8 |
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Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
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Re: 71 Bronco help
I have owned two 90s f150s one was a 300 one was a 302 mileage difference was maybe 5mpg if that.If your looking max mpg a 4bt cummins will get it but its as heavy as a big block so off road its front end heavy.
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05-23-2012, 01:38 PM
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#9 |
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Registered User
Join Date: Oct 2010
Location: Portland, or
Posts: 387
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Re: 71 Bronco help
5 better with the 300? thats huge.
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Chuck
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05-24-2012, 01:38 AM
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#10 |
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Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
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Re: 71 Bronco help
Have you thought about a diesel tho?A friend of mine has a 79 bronco with a 12 valve cummins and he gets 20mpg with a c6 if it had a overdrive it would be even better.But with the small bronco like yours a 4bt would fit better its basicly a 4 cylinder version of the 12 valve cummins,With the right mods and trans it might break 30mpg depending driving habits.
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05-25-2012, 12:22 PM
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#11 |
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Registered User
Join Date: Oct 2010
Location: Portland, or
Posts: 387
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Re: 71 Bronco help
yeah the orange burb under my name is in the process of a 4BT install..check out my build thread.
I just want to get the best fuel economy possible in an old bronco with a gas engine.
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Chuck
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