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Old Jan 16, 2011 | 05:50 PM
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I have a....

...'78 F-100 that I'm currently doing a frame off. I am keeping everything original, however I have a friend that has an '87 GT 5.0 that had rebuilt 2 years ago and now but has never started. (Rebuilt to factory specs) He wants to go big block and is giving first option to buy the 5.0 if I want it. Now I'm thinking about buying it and putting it in the truck when the time comes. I am keeping the original 302 (never know what may happen later) and I'll be using the intake,air cleaner, and carb off of it and whatever else I can. I know in '87 the advertised HP was 225, my question is what kind of HP drop can I expect when I put the original intake and 2BBL carb on it? Or should I upgrade the intake? The tranny is a C4.

Thanks
 
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Old Jan 16, 2011 | 06:01 PM
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I'd guess you're going to give up somewhere around 25 HP. You shouldn't have too much of a problem coming up with a good used 4BBL setup though at a swapmeet or EBay.
 
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Old Jan 16, 2011 | 06:14 PM
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I thought it might be somewhere around 20-30 HP. I have thought about the 4BBL setup, but I'd still like to keep it as close to original as I can.
 
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Old Jan 16, 2011 | 06:18 PM
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why not go all the way and convert to efi? You are already getting the engine, just grab the computer and harnesses and do the conversion.
 
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Old Jan 16, 2011 | 09:51 PM
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Thought about EFI, but I think I'm gonna stick with the factory trim, I already have everything.
 
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Old Jan 17, 2011 | 11:10 AM
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Hmm why not get an aluminum 4bbl intake and paint it to match the engine? then get a 4bbl to 2bbl adapter and put it on. So it will look stock but you will have a big drop in weight and performance gains. Then go get a Holley 2bbl. they make ones that flow like a 4 barrel.
 
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Old Jan 17, 2011 | 11:17 AM
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Hmm why not get an aluminum 4bbl intake and paint it to match the engine? then get a 4bbl to 2bbl adapter and put it on. So it will look stock but you will have a big drop in weight and performance gains. Then go get a Holley 2bbl. they make ones that flow like a 4 barrel.
 
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Old Jan 17, 2011 | 12:12 PM
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X2 with mikepacey
 
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Old Jan 17, 2011 | 06:12 PM
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Originally Posted by MikePacey
Hmm why not get an aluminum 4bbl intake and paint it to match the engine? then get a 4bbl to 2bbl adapter and put it on. So it will look stock but you will have a big drop in weight and performance gains. Then go get a Holley 2bbl. they make ones that flow like a 4 barrel.
I had thought about the intake idea because I figure with the loss in power I could make some of it up with the intake.
 
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Old Jan 17, 2011 | 09:42 PM
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Originally Posted by Bronc76
I had thought about the intake idea because I figure with the loss in power I could make some of it up with the intake.

You'll be happier in the long run and you will be amazed how good the holley two barrel is. The nice thing about it is looks alot like the motorcraft.
 
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Old Jan 17, 2011 | 09:50 PM
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original can hinder a build.... just saying...
 
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Old Jan 17, 2011 | 10:55 PM
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Originally Posted by Big_Dom
original can hinder a build.... just saying...
I totally agree.....but the reward is worth the effort.....sometimes
 
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Old Jan 18, 2011 | 05:23 AM
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sounds like a awesome build. post up some pics of ur progress so far. gotta love original!
 
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Old Jan 18, 2011 | 09:44 AM
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Originally Posted by BIGT94z
sounds like a awesome build. post up some pics of ur progress so far. gotta love original!
Will post pics as sson as I can.
 
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Old May 17, 2011 | 11:35 AM
  #15  
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Before I purchase the '87 5.0, I have a couple of questions that someone may have the answers I'm looking for; I'm pretty sure that I can use the stock distributor ('78), would I have to change anything, maybe the gear? Am I going to be able to use the stock pulleys? I would like to be able to use the power steering setup that i have now. I'm sure someone has done this before and I would like to know if there is anything else that I would have to do to make this an easy swap before I go to far.

Thanks
 
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