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Old 09-01-2019, 03:58 AM   #1
my4dv8
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Default B4 water pump on A OHV conversion

We have a new leakless B4 water pump , is it possible to fit to a miller OHV head that is designed for the 4 bolt model A water pump?
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Old 09-01-2019, 09:54 AM   #2
redmodelt
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Default Re: B4 water pump on A OHV conversion

This might help to start;
http://www.fordgarage.com/pages/cragarwaterpump.htm
and even better;
http://millerhi-speedheads.com/products.html
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Old 09-01-2019, 10:59 AM   #3
Jim Brierley
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Default Re: B4 water pump on A OHV conversion

I don't think so. The B pump has 3 mounting bolts, the Miller has 4 and would accept the A pump but should have the Miller pump which is like the A but has an air-bleed hole at the top. By the time you put an adapter from 3 bolt to 4 bolt the pulleys wouldn't line up, HOWEVER, if you have the '33-'34 B pump which is shorter, an adapter could possibly be made to work???
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Old 09-02-2019, 01:44 PM   #4
my4dv8
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Default Re: B4 water pump on A OHV conversion

Thanks Jim that mirrored my thoughts on pulley placement. So simple answer is , spend more money!!
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Old 09-03-2019, 10:36 AM   #5
Jim Brierley
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Default Re: B4 water pump on A OHV conversion

That's it! They are available thru millerhi-speedheads.com
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Old 09-03-2019, 05:51 PM   #6
redmodelt
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Default Re: B4 water pump on A OHV conversion

RE;the Miller has 4 and would accept the A pump

See my first link, the 4 holes are not the same as Model A so you couldn't bolt an A pump up anyway.
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Old 09-03-2019, 07:22 PM   #7
my4dv8
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Default Re: B4 water pump on A OHV conversion

Yes thanks for that redmodelt I did see your link and till then did not know std A and OHV pumps were not interchangeable.
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Old 09-04-2019, 11:17 AM   #8
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Default Re: B4 water pump on A OHV conversion

Neither did I, but I'm not a Cragar-guy, I like my 4-port Riley's!
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