Boch A Pump on 4320 block? January 25, 2014 01:23AM
Can anyone tell me for certain whether a Bosch or Nippendenso A Pump will bolt up to a stock 4320 block without doing any machine work?
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Re: Boch A Pump on 4320 block? January 25, 2014 03:27AM
it will not bolt on.
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Re: Boch A Pump on 4320 block? January 25, 2014 05:12AM
OK, so it's not a straight up bolt on. I guess the next question is, Is it possible to mount one on it, and if so what work would need to be done?
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Re: Boch A Pump on 4320 block? January 25, 2014 04:01AM
What do you have to do to get one to fit?
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Re: Boch A Pump on 4320 block? January 26, 2014 12:19AM
The block is not made to support the heavier pump plus rotary is cam shaft driven.
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Re: Boch A Pump on 4320 block? January 26, 2014 12:34AM
You need a 404 combine or 4430 style block etc. or go with a 466. I've been in same situation for along time. Good luck!
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Re: Boch A Pump on 4320 block? January 26, 2014 05:03AM
The pump is on the front on a 4320.. Not sure if there is enough to machine it out for an A pump mount.. I've seen adapters made to run A pumps on other engines.
I'm guessing you have to run a stock block??
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Re: Boch A Pump on 4320 block? January 26, 2014 05:38AM
It can be done we used to have a setup but its long gone you can machine the hole out and make a spacer between the pump and cover the pump has to set with the lines coming out at 2:00 position and support the pump bottom to the engine block they did this in the 70s - 80s so its not uncommon
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