Power steering pump assembly identification

[66chargertoy]

Greeting ladies and gents. Purchased a incomplete project, 73 Roadrunner that came in several boxes with some duplicates. So lets play our favorited childhood game of what doesn't belong here. Car is a original 400 auto. Which of these power steering pump assemblies belongs to the car. Will it be pump "A" or "B".

[70 sublime]

I want to say B is the one you want
Looks like it still has the part on the end of the hoses that goes on top of the steering column

[tan top]

 A is a saginaw pump with R/RB mounting brackets  ,   

 saginaw pump  B  & brackets  look like from late 60s small block  ,    

[Nacho-RT74]

A is correct for 72 and earliers. 73 and lates use a slightly diff bracket setup. The large bolt attaches straight to a boss threated on 73 and lates big blocks, so it shouldn't get a nut like pre 72 got, aside it's wide open to reach the block. I think can get some pics around of my car assembly.

73 and lates big block steering pump fits way lower into engine bay than pre 72 which got attached just on water pump housing

Also 73 and lates steering pump use the triangular reservoir, not the round one

[Nacho-RT74]

From odzking website ( member here )

Steering pump gets an extra bracket on 73 and later to reach the lower location




And the rear bracket is wider. Pivot bolt threads into the block and gets an spacer



Note the diff oil reservoir shape and the front bracket differences too.

[66chargertoy]

Thanks for the quick replies  . Sooo, looks like it could possibly be "A" pump but the pics from Nacho-RT74 are different. Car was a Canadian build so is it possible that it would be slightly different. Will look through the boxes for that extra bracket that lowers the pump assembly.

Also just found this on Classic Industries. Looks like the brackets on pump "A"
https://www.classicindustries.com/product/1973/plymouth/roadrunner/parts/md2602.html

[Nacho-RT74]

those brackets at CI are the same ones that you actually have. Wrong for 73 and lates Big Block B bodies at least

[Nacho-RT74]

need to say the pump B is the same A pump, just diff brackets ( other block family )... slightly diff pulley too, but pump itself is the same on both.

Canadian or USA car makes no diff on this. My Charger 74 was assembled in Venezuela and got the same setup than Odzking car

[66chargertoy]

Thanks for the replies. Sorry about the late response. Just finished rebuilding the heater box. I've looked around but didn't' find any repo of the BB 73 and newer power steering setup. Or do I need to find a original piece.
Thanks again.

[GreenMachine]

Maybe the pump "A" brackets will bolt up to your '73 water pump. @Nacho-RT74 can it be done without issue?

I have a box of misc. power steering brackets I can look though if you want to go with the '73-up brackets.

[Nacho-RT74]

The earlier setup will attach to the later block but the belts could run diff.

While on earliers with A/C the steering pump gets its own belt, on laters the steering pump shares the belt with water pump. On earliers A/C cars the water pump gets a belt iddler running also its own belt.

On earliers non A/C cars, the steering pump still runs on its own belt. Non A/C cars water pump shares the belt with Alt.

On both setups with A/C, Compressor shares the dual belt with Alt

Pulleys are slightly diff too on every setup.

It could be done? Yes, as far pulleys setup help on this aligning propperly between accesories.

[fastmark]

I may have the complete assembly for your 73. Let me look and take some pictures. We might could do a trade or something.

[66chargertoy]

Again, great info I just re-read my post and should let you all know my plans. Car originally came with a 400. The motor is long gone but project included a 71 440. I found a good 400 block that I will rebuild later on, but want to get the car street worthy sooner. For now I will use the 440. Also got the original rad re-cored so need to use the 73 and up water pump housing which exists on the passenger side. Found a post on another forum stating that 73 and up BB has a provision for the power steering setup that earlier ones don't have. Wondering if this is possible.
Thanks fastmark, if you do have one that would be great.

[fastmark]

I may have one on a 440 still installed. I can take a picture

[Nacho-RT74]

Good to know... yes earlier big blocks don't have the threated boss on block to attach the steering pump lower into the engine bay like 73 and lates got. SO if the block you will be using is a pre 73, you won't need the later bracket setup, but the one you actually have on pump A.

any water pump housing will work for your purpouse on block but the best is match with the radiator you have on lower outlet. Both housings, driver or passenger side bottom outlet will accept the earlier steering pump bracket setup.

Next step is match/check the pulleys aligment to run the belts. If is A/C, things will change a lot more than being not A/C

[66chargertoy]

Again, a big thank you to all. It's a non A/C so will use the pump and bracket A on the 71 440 till I get around to rebuilding the 400. It's also easier to sell the 440 later on when it's up and running in the car.
Check out this Pez that came in one of the boxes

[fastmark]

This is what I have. I think it's the correct bracket. The ones on the complete 440 are different because they are AC brackets. I would think a power steering non ac bracket would be harder to find. Not sure if the pulley has correct offset. I'd have to bolt it to another 73 440 I have to tell. I have some more pumps with pulleys that have the late model reservoir. Would you happen to need some 73. HP exhaust manifolds?

[66chargertoy]

That looks like what I need fastmark. Need to find out if the 400 BB I bought is actually a 73 and newer. With this pandemic going on, Firefighter Ron will be picking it up for me only in the spring. The region has been on lockdown for quite a while. I'll text the seller to check the stamping on it. I could of used that 73 exhaust manifold but found one about a month ago (passenger side). Thanks for the offer though.

[Nacho-RT74]

Yes, that's the correct 73 and laters setup. Just need to add an spacer for the long bolt which threats into the block. The spacer fits between rear and front bracket of the pump. Less the thickness of the extra bracket to the water pump housing which also fits in there between spacer and front bracket

[fastmark]

I've got the spacer as well.