Water pump question.

[71 SE3834V]

Is this the seal that's popped out?
Looks like a spring behind it so didn't know if it was supposed to be like that. Also it's a 6 vane impeller. Is that correct for a '71 383 HP engine w/air? Number on it says 129701 but no Penstar so I think it's a reman. It's painted blue? Maybe used off of a later model w/blue paint?

Just found a Masterpro reman on Oreilly's website w/the same part number. Looks like it was replaced years ago and someone painted it blue before assembly.

[71 SE3834V]

Ok, picked up a reman from Oreilly. It's a Mopar w/penstar and #3671083 on it. It has 8 vanes. 1 yr warranty. What I think/thought was a seal is in the same position as my old one.
Stopped at Auto Zone on the way back. They offer a Duralast reman (I think) w/life warranty for only $3 more. Picture shows  8 vanes (not in stock). I know I read about this before but can't remember which is correct. Will do some more research.

Just found out there's a sticky about this. Will read.

[71 SE3834V]

Read some of the sticky and now more confused then ever. One says 8 vane is standard, 6 for a/c. Another post says the opposite.
I wasn't having any temp issues, I'm doing a timing chain replacement so you know, while I'm in there....If anything the gauge showed low but it's the factory dash gauge and I don't know how accurate it is. The thermostat was a 180* and 2 auto parts websites say 195* in factory standard. Just want to make sure everything is the correct parts.
The engine is bone stock as far as I know.

[cudaken]

To be honest I am not sure on the vane count. But I do know that a 73 to 74 440 with air flows the water a little slower, so it cools better. It is all so worth 5 HP at 5000 RPM's.

If you like I will dig out my bible (DC Racing Manual) and get you a part number.

Cuda Ken

[flyinlow]

To be honest I am not sure on the vane count. But I do know that a 73 to 74 440 with air flows the water a little slower, so it cools better. It is all so worth 5 HP at 5000 RPM's.

If you like I will dig out my bible (DC Racing Manual) and get you a part number.

Cuda Ken

5 HP   

[71 SE3834V]

I have the 70-71 Mopar parts catalog. It lists different pumps for a/c, non a/c. It shows the same # for 383/440 w/air as the 426 ci. When I punch in a 426 engine into Oreilly & Auto Zone website I get the same part number for either engine and none ask me if the car has air. I asked this at both store in person. I wondered if they're just selling 1 pump and people are non the wiser but it is the 8 vane and that one should be the faster flow from what I've read.

[GF7Bee]

I'm prety sure that a six vane was standard as when mine let go it was a six vane. Supposedly a six vane moves more volume for better cooling, that is why they list the same pump for hemis.

[71 SE3834V]

Sorry, I should of updated this but have been knee deep into a timing chain replacement.
From what I read in the archives of this forum is the the standard, non a/c car had a 8 vane pump with a certain sized pulley to drive it.
With an A/C car mopar used a smaller pulley to spin the fan faster to draw more air through the radiator at idle. Therefore they used a 6 vane pump to keep cavitation from happening at higher rpm's. The question is still out there on what to used now that only an 8 vane seems to be available. I had one guy at an independent auto supply shop suggest using a diesel additive(??) to the coolant to prevent cavitation.
I have determined that my pump is in good enough shape to reinstall and it wouldn't be a big deal to replace it in the future, at least compared to the timing chain job.

And yes, when I looked up the pumps in the Mopar part catalog I saw that the same pump was used on the hemi. My guess would be that they also used a smaller pulley to pull more air through the radiator to cool that beast.