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Old Oct 19, 2007 | 10:19 PM
  #1  
bobfromktown's Avatar
bobfromktown
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From: College Station
Performance Changes

Okay, I got a '96 Bronco.

It has a 5.8L 351 Windsor, I'm just wondering what I can possibly do to the engine,exhaust, or anything to get more power and possibly better gas mileage?

Id like to keep each part under $300, just don't wanna go to overboard ya know.

Thanks.
 
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Old Oct 20, 2007 | 05:54 AM
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JLDickmon
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put a wooden block under the throttle pedal...

more power = LESS fuel economy, but you might look into chipping it...
 
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Old Oct 20, 2007 | 06:09 AM
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Open up the exhaust and put a drop in k&n filter in the airbox.
 
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Old Oct 20, 2007 | 02:21 PM
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What do you mean open up the exhaust
 
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Old Oct 20, 2007 | 02:28 PM
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you have restrictive muffler and cat. convertors from factory.
 
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Old Oct 20, 2007 | 02:41 PM
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More power doesn't neccessarily mean worse fuel economy. you won't have to push the throttle as much to accelerate the same way. The problem is you probably won't be able to keep your foot out of it
 
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Old Oct 20, 2007 | 02:49 PM
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Do you know what the size of the exhaust pipe is stock on a '96 Bronco(351)
 
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Old Oct 20, 2007 | 03:19 PM
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you do know you are on the f150 forum?

not sure on the diameter.

can't you just measure yours?'
 
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Old Oct 20, 2007 | 03:43 PM
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Yeah, everytime I post on the Bronco forum it takes forever, it's the same thing basically does it matter?

I can't just cut it off and measure it...
 
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Old Oct 20, 2007 | 04:47 PM
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A quality set of long tube headers with 2 1/2" dual exaust with H pipe. Run off the cats. I am running Flowmasters on my 88 F150. I had glass packs and was looking to quiet it down a little. They have a better tone but not any quieter. The shorty headers are a waste of time and money. (thats what I have so I know from experience) Install a good set of metal gaskets. Upgrading the bolts would also be a wise investment. That will keep you from having to tighten them all of the time.

I think the stock pipe is 1 7/8 to 2".

How much effort do you want to put in to it. A cam upgrade will give you more power.
 
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Old Oct 20, 2007 | 05:04 PM
  #11  
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Originally Posted by JLDickmon
put a wooden block under the throttle pedal...

more power = LESS fuel economy, but you might look into chipping it...
That's entirely not true. It CAN be true in older vehicles that have a carb and the only way to more power was to throw more gas at it. However, since internal-combustion-powered vehicles are about 25-35% efficient (that percentage of the energy in each gallon of fuel is converted to useful motion, the rest is wasted heat and idling), there is much room for improvement in the efficiency category that can net you gains in both power and economy.

I've got a 351 that gets about 14mpg at its very best on the highway. My sis and BIL had a Suburban of about the same age that got close to 20mpg out of its 350, in a heavier vehicle. Not sure what its power was, but it probably wasn't too far off the 210hp/325ft-lbs of my 351.

Jason
 
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