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turbojimmy Posted on Apr 13, 2014
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1984 P30 Hydroboost Pump Diagram

Restoring a 1984 motorhome on a P30 truck chassis. It has a 454. I did not disassemble it and I think I'm missing some brackets for the Hydroboost pump. The "new" engine is a 1990 crate engine that the previous owner said had hydroboost brackets on it. It had brackets, but nothing that appears will work with my pump. Diagrams would be a big help.

  • turbojimmy
    turbojimmy Apr 14, 2014

    I did the google search - thanks. Nowhere could I find a picture of the bracket detail, like from a factory service manual.

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1 Answer

truemoparian

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  • Expert 79 Answers
  • Posted on Apr 13, 2014
truemoparian
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5 Related Answers

Anonymous

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SOURCE: Need wiring diagram for 1988 454 Chevy engine in

try the library

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Marvin

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SOURCE: Alternator

Yes it is the wire that comes from the alternator/battery lite in the dash.

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SOURCE: 1984 Chevrolet 454 oil pressure gauge reads maximum all the time.

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co7196

Ned C Cook

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  • Posted on Aug 23, 2009

SOURCE: 1983 chevy 454 wont stay running

If it's an electrical problem it wont start at all. If it starts, runs or a few, it's a fuel issue.
A new pump and lines, what about any inline fuel filters and the fuel filter in the carb fuel inlet? If it has a quadrajet carb, the fuel inlet filter will play with you.Check your idle speed and the auto choke setting.Any questions on how to balance the carb and set the xhoke, Feel free to ask. _NNed

Anonymous

  • 333 Answers
  • Posted on Oct 17, 2009

SOURCE: 1999 Chevy express 454 belt diagram.

454 with ac and a.i.r.
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The inside, large pin, that pushes out to the hydroboost, may have fallen out when you took off the booster. Also the pin from the booster to the master cylinder may have been stuck inside the hydroboost that you took out. Pull the master cylinder off. You will see that the large shaft/pin is missing. Good luck.
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