Topic: 70 Boss 302 P/S

[Bossbill]

I'm converting my 70 B2 to P/S.
Blame all those years of wrenching and house remodeling.
Plus, parallel parking this thing is like parking a 1952 F1 pickup with a full load. It doesn't help that I have some "interesting" alignment specs to add positive caster and negative camber.

I may come back to this thread from time-to-time as I collect all the parts.
I should have done this back when people were removing P/S setups and selling them for $300.

As I go along I'll share all of the part numbers which may help other people as they are locating parts for their stock setup.
Let's move on.

I have the D0ZE-6312-A two sheave crankshaft pulley.
In order to fit P/S I need the three sheave pulley D0ZE-6312-B.

Considering my car's build date of 6/6/70 it appears I may have the wrong pulley in the first place. From the Boss302 website:

"The two sheave -A pulley fits the BOSS 302 w/o power steering. This was used primarily on cars built before late December, early January 1970. Around that time the power steering and non power steering cars started sharing the three sheave pulley D0ZE-6312-B."

So, I may have an early pulley on a late car?

[DougDyar]

I have a three sheave pulley and the bracket that mounts the power steering pump to the water pump.
Email me if interested.
Doug
csx4068@gmail.com

[J_Speegle]

Here is a couple of examples of 70 Boss 302 with PS using the three sleeve crank pulleys. Partial VINs listed with each

0F02G1427xx




0F02G1691xx

[Bossbill]

Thanks Jeff.

On the manual steering cars the two sheave crank pulley pattern is (inner to outer):
Smog Pump
No pulley -- just blank
Alternator

By fitting a C90E-8509-G water pump pulley an additional sheave has been added to line up with a new middle sheave on the crank pulley.
The three sheave crank pulley pattern is (inner to outer):
Smog Pump
P/S
Alternator

By adding the center sheave on the crank and a water pump pulley with an additional sheave the power steering belt can use that newly added location. The alternator still runs on the outside sheave, but no longer routes around the w/p pulley.

Because the 3 sheave crank pulley just adds one sheave between the other two, Ford thought maybe they could simplify things by making the 3 sheave standard on all B2s starting in January.
There would be an empty space for the early 2 sheave manual steering cars and an unused middle shave on the later manual steering cars. See pic of a 2 sheave.
The issue is if and when this occurred.

Are there enough running changes on B2s to warrant a thread for that? 

[J_Speegle]

Are there enough running changes on B2s to warrant a thread for that?

IMHO not at this time. Bigger needs and not many have come up for just Boss 302 details yet

[Bossbill]

I just bought a  Boss/351C power steering pump bracket from WCCC for the Boss. Nice piece, guys.
I also have the 351W/302 bracket.
The 351/302 bracket has a smaller back U-hole than the Boss/351C bracket.

The Boss HBA-CC pump has a larger pump outlet, I gather? That much bigger?
And no, I don't currently have the correct pump with which to compare.
See pic with larger U-hole on bottom bracket with tag.

[DougDyar]

The Boss HBA-CC pump has a larger pump outlet, I gather? That much bigger?
And no, I don't currently have the correct pump with which to compare.
See pic with larger U-hole on bottom bracket with tag.

Bill

Yes, you are correct in that the outlet fitting is larger. Obviously the pressure hose that connects to the fitting must also be compatible with the larger outlet.

You may have trouble finding the correct CC pump. I assume you could use a 302/351 pump with the appropriate bracket and hose. The return tube on the pump may need to be changed to fit the BOSS configuration with a fluid cooler.

The BOSS 302 pulley is also larger than the standard one.

Doug

[krelboyne]

Yes, 1970 pumps have a larger outlet fitting and it is offset from center. Easy to spot.
FYI you cannot use a 351W/302 front adjusting bracket. It needs to be the 351C bracket, at least three different versions, the correct one is marked D0ZA-3C511-A.

[Bossbill]

Thanks for the crank pulley and bracket, Doug.

Scott mentioned that the offset outlet is easy to spot. Well, it is after you see it!

Got a PM from another member who offered a nice pic of the rear. Thanks Craig.

I also noticed on the Boss site and from Craig's pic that the "can" has a peculiar return line on the bottom that routes a hard line to the passenger side.
Using that information I searched around for a 70 can and actually found a rebuilt complete unit on ebay, pump and can! I'd tell you what I paid, but you'd hate me.

Attached find a pic of the can and pump for a 70 Mustang application.

[Bossbill]

I was looking into whether the power steering pump hose index bracket (3C510) was used on the 70 Boss.
Turns out that 3C510 is used as a number for both the hose index bracket and the metal support bracket under the car that holds the hoses!

Moving on. According to the MPC section 36.4 (70/71 Fairlane, Torino and 70 Falcon and Mustang) for 302 and 351 applications, the Boss does NOT use a hose index bracket.

Pic 1 shows a standard Mustang with the hose support 3C510 shown.

Pic 2 is a blowup of sub section D of the illustration page showing the  back of a B2 pump without the 3C510.  Can you'all verify?

Edit to add pic 1.

[Bossbill]

Haven't found any further info on the rear index bracket. It probably didn't need one for this oddball configuration.

I did find an offset pump and can and while the pump was ok, the can did not have the rib around the front. Why do they make these new and almost correct but forget the rib?

WCCCougars to the rescue as they sold me a pump can, the correct -CC tin label and the hose retainer under the suspension (with the twin rubbers to hold the hoses).

A pic of this really nicely colored can attached along with its original runs on the bottom.

[Bossbill]

Finally found the 69 Big Suspension and 70 Mustang/Cougar power steering drag link.
These have a weird shape at the idler and a hump on the thread side.
See: https://secure.cougarpartscatalog.com/d0zz-3304-b.html?sessionthemeid=26

I may use my existing tie rods (depends on condition) and I have a complete 68 ram and control valve assembly I can use after a rebuild. A few nuts and bolts and some hoses and Bob's your uncle.

Still looking to trade my original, very nice 428CJ/B9 power steering cooler for a B2 cooler. See trade listing.

On edit -- I did look into pitman arms and idler arms and find that the idler arm is the same 67-70 on p/s cars. Same with the pitman, however the steering sector shafts can be either 1 or 1 1/8". As noted, I do have a 68 system (2 in fact) and other divorced boxes laying about, so I'm sure I can find the required parts in house.

[Badgas6228]

Hello Bill, This is Greg Springer  in Burien up the street from you I'm converting my 70 Boss to power steering to cuz I'm getting older also, and I've been acquiring all the parts I thank you for all your research and information and I've pretty much got everything now finding the CC pump was the toughest but the after talking to Dan at clockostang he said that the CC pump does require that 510 bracket in the back that index the hoses and there is one that fits the CC pump so they're available good luck Bill. Greg     Burien

[Bossbill]

Greg --- This has been tough since the guys on the B302 forum treat this whole conversion either as a "buy it from someone" or infer it's an easy swap.
I still have to go through the nut and bolt listing and figure out the size and length of all the new fasteners.
I won't bore you with the 4 other concurrent projects going on including the work to put in another shop heater. I do so hate the cold and the cold concrete.

According to the MPC there are two different parts called 3C510!
The split seems to be at post 67 since this year and previous don't use a hose index. Instead they use a strap to keep the back of the pump from moving. Somewhere around the 68 time the hose index came into play. Perhaps it's when the main bracket change from an aluminum stamping to a steel stamping (like the Boss) that also supported the rear at the pump outlet.

Anyway, here is a pic of the other 3C510.

[Bossbill]

Ok, I just spied a later picture and either Ford changed their mind on part numbers or the earlier MPCs have the rear support or hose retainer called out wrong.

The pic below shows the hose retainer as a 3C511.

Unless someone pops in real quick I'll update this post after I do some more MPC searching.

EDIT -- I do not see a 70 B302 3C511 hose index bracket listed.