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Old May 31, 2013 | 09:02 PM
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Need help finding a part

Would anyone know where to find a Brake Pressure Differential Valve (proportioning valve) for a 1967 Ford F100 Ranger 1/2 ton pickup? Its a 352 engine, with drum brakes all wheels. We have driven it since 1968 and would hate to give up on it now.
 

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Old May 31, 2013 | 10:29 PM
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HIO Silver
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With 4-wheel drums, it's known as a proportioning block. I don't recall ever seeing an OEM replacement. Is your project a spot-on restoration???

Otherwise, I suggest simply installing an adjustable prop valve from Wilwood or a house branded version from Speedway Motors.

 
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Old Jun 1, 2013 | 08:17 AM
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i have one but i dont know if it is still good or not but i live in southeast kansas since you dont have a location idk if i can help you or not
 
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Old Jun 1, 2013 | 08:37 AM
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^ OP located in AZ
Originally Posted by Lone Ranger & Silver
Would anyone know where to find a 2B257 Brake Pressure Differential Valve for a 1967 Ford F100 Ranger 1/2 ton pickup?

It's a 352 engine, with drum brakes all wheels. We have driven it since 1968 and would hate to give up on it now.
Assuming your truck is 2WD: C7TZ-2B257-E = 1967 F100/250 2WD & F350 / Obsolete ~ ONE available NOS

NOS PARTS LTD in Waxahachie TX has ONE = 972-937-2201.

If just the POS plastic low brake fluid warning lamp switch (C7AZ-2B264-A) is defective, it was available by itself, but it's also 1967 ONLY.
 
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Old Jun 1, 2013 | 09:47 AM
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Thanks for the great ideas

To Hio Silver.... No, it is not a restoration. It has been our transportation since 1968. We are the 2nd owner. It pulls left on a soft brake, goes straight on a hard brake. Our mechanic says it is the proportioning valve. Hope he is correct.
 
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Old Jun 1, 2013 | 09:59 AM
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Thank you

To NumberDummy
You're right about the warning light, but on our truck that light has been out for a long time. I crawled under the truck and looked at that valve and the light connection has been broken for quite a while, it looks like. Our differential valve (proportional valve) looks like it has two lines coming down from the master cylinder, two lines going to the back and only one line going to the front out of the top.
How about a plain old 1967 F100 352 that is not a 4x4
 
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Old Jun 1, 2013 | 10:05 AM
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I have one off of my 67 that I won't be needing after converting to 4 wheel discs.

Lmk and I'll mail it out to you.

Here is a pic:
 
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Old Jun 1, 2013 | 10:36 AM
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That would be great!!! Thank you so much.
 
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Old Jun 1, 2013 | 10:42 AM
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Originally Posted by Lone Ranger & Silver
To NumberDummy
You're right about the warning light, but on our truck that light has been out for a long time. I crawled under the truck and looked at that valve and the light connection has been broken for quite a while, it looks like. Our differential valve (proportional valve) looks like it has two lines coming down from the master cylinder, two lines going to the back and only one line going to the front out of the top.

How about a plain old 1967 F100 352 that is not a 4x4
That's what I gave you the C7TZ-2B257-E valve part number for, a 1967 F100/250 2WD & F350.

Look at the parts catalog applications for the other 1967 valves.
 
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Old Jun 1, 2013 | 10:44 AM
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That would be great!! Thanks a lot. ...Silver
 
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Old Jun 1, 2013 | 11:04 AM
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Originally Posted by Lone Ranger & Silver
That would be great!!! Thank you so much.
PM me your contact info and I'll throw it in a flat rate USPS box on Monday.

Just cover the shipping and it's yours.
 
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Old Jun 1, 2013 | 11:05 AM
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Area 351
Was unable to open your picture. Would like to contact you privately but unsure how to since I'm a newbie.
 
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Old Jun 2, 2013 | 10:45 PM
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Hmm I'd almost bet it's not the P-valve causing the pulling but maybe a gummed up wheel cyl piston..on the other side then it pulls too.. my 2cents orich
 
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Old Jun 3, 2013 | 04:50 PM
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4 wheel drum brakes do not have a proportioning valve. They have a distribution block. Two different animals. The distribution block is located inside the left frame rail in the vicinity of the master cylinder. Just follow the brake lines from the MC and they'll lead you right to it.
 
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Old Jun 3, 2013 | 07:10 PM
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Originally Posted by flyboy2610
4 wheel drum brakes do not have a proportioning valve. They have a distribution block. Two different animals. The distribution block is located inside the left frame rail in the vicinity of the master cylinder. Just follow the brake lines from the MC and they'll lead you right to it.
"Brake Pressure Differential Valve" is the correct name as noted in the Ford Truck Parts Catalog. See post 4, basic part number 2B257.
 
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