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Author Topic: 91 5.7L questions  (Read 2788 times)

Offline zieg85

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91 5.7L questions
« on: January 10, 2009, 08:54:33 PM »
Can I modify the intake of a 5.7L to work with a carb?   The engine I pulled from my 91 parts truck has a block off plate for the fuel pump, were they typically machined to go either way or was it a way to use up the old block inventory?  I would like to try playing with a 1 bbl fish carb with this engine.   
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Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline VileZambonie

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Re: 91 5.7L questions
« Reply #1 on: January 10, 2009, 08:58:11 PM »
What do you mean modify the intake?  ???

If it has the block off plate you can use a mechanical pump if that's what you are asking.
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Offline zieg85

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Re: 91 5.7L questions
« Reply #2 on: January 10, 2009, 09:02:31 PM »
Use the intake by machining an adaptor plate for the fish carb?
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Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline HAULIN IT

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Re: 91 5.7L questions
« Reply #3 on: January 10, 2009, 09:08:01 PM »
What is a fish carb? Is it flat on the bottom?
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Offline VileZambonie

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Re: 91 5.7L questions
« Reply #4 on: January 10, 2009, 09:11:19 PM »
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                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline HAULIN IT

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Re: 91 5.7L questions
« Reply #5 on: January 10, 2009, 09:26:01 PM »
Ok, If I had heard of those, I forgot I guess. I do remember hearing/reading about Fireball Roberts on some of the old Nascar shows/books. Can they be bought today?  Zieg, in the "pictures" part of the site shows what looks like a Fish to Q-jet adapter...Looks to me a flat plate could work though. Thanks, Lorne
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Offline joesgarage71

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Re: 91 5.7L questions
« Reply #6 on: January 10, 2009, 09:59:57 PM »
  I have seen some earlier 90's blocks have the fuel pump boss cast in the side but no hole machined for the fuel pump rod. If yours has a plate the rod hole might be there too.

 Steve
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