I need an olds water pump pulley:

3 groove
2 3/4" deep - set on a flat table measured from top of pulley through
pilot hole to table.
5 5/8" diameter

Let me know, would appreciate it.

Larry

 

Not sure if this will work for you but here is one on Ebay

http://www.ebay.com/itm/NOS-V8-3-GRO...5721b2&vxp=mtr

Here is another

http://www.ebay.com/itm/1968-74-442-...a0822e&vxp=mtr

 

Thanks, but I've already followed up on those. I've been watching ebay like a hawk and so far no luck.

 

Bro I got one laying around I'm sure message me

 

Anybody, please!!

 

Checking...Here is what I found. I am not sure of your application,(engine,model of car...)
The smaller diameter pulley is a KE, believed to be for the 66-67 330 w/air.
the larger one is a JH pulled from a 70 Supreme 455 w/air.
Let me know if I either will help out and good luck with the search, that's half the fun!

 

About what year is that?

 

To start with thanks much for the reply. I have a KE pulley and it is too tall/deep (but the right diameter), out of desperation I'm trying to section it as we speak - 725" is what I need to take out, what a pain.
I should have advised what I'm trying to do, I have a 66 Delta 88 convertible with a 425 that I am trying to convert to air. I'm using the factory brackets under the hood to move the alternator over to the driver side next to the P/S pump. So far so good, the lower 3 grove pulley I acquired lines up perfectly with the alternator and P/S pump and the outer groove will match up to the air compressor. The problem is that darn water pump pulley that I can't locate, it would help if I even knew the alpha code or part number on it. I guess if worse comes to worse I can replace my water pump with a long shaft pump but I was lead to believe all 66-67 425's had the short water pump. By the way the fun half of the search is over. Thanks again.

 

By the way what is the depth thru the pilot hole to the base on the bigger pulley, if it's 2 3/4" deep I'm wondering if I have to go to a smaller lower pulley to pull this off.

Anybody out there have a 66-67 Delta 88 425 with factory air, if so I would love to have the alpha code or part # on those pulley. Thanks.

 

Larry,the JH or large pulley is 2 3/4,bottom edge to top.
You may try Chris,'Octania'. I believe he has several pieces for the 425's.

 

Larry, the nearly-canonical list of Olds Pulleys says you are SOL
Evidently you are trying to use a 2-groove water pump with 3-groove pulleys.
The list says there is no such thing as a 3-groove 5.6 dia x 2.78-2.8" overall width WP pulley.

The pulley database info from the factory manuals says for BB with AC you need:

3G Crank pulley JB 389645
7.18 dia x __"

3g WP Pulley
JH 391114
6.4 x 2.8"

1g PS Pulley
JM 384678
6.4 x 0.9"

AC and PS; Alt mts LH side over/inboard of PS
#1 groove: C-WP-Alt, "LB" belt # 382616, 49.62"
#2 groove: C-WP-PS, "LL" belt # 386066, 63.47"
#3 [fwd] groove: C-WP-AC, "LD" belt # 382645, 61.00"

I can't find much info [even overall width] on the JB pulley [help appreciated] nor is the exact WP length listed, but I can guess that PROBABLY you need the longer [for 1967 and earlier] 5.6" pump.

 

Octania and Tru-Blue 442, thanks to you for your very helpful information.
I wanted to share what I've found out to hopefully help anyone facing a similar dilemma. Ok, here's what I've discovered as far as 65-67 Olds Delta 88 425 and 330's are concerned. My source is Oldsmobility.com, which has an excellent composition of Oldsmobile water pump casting numbers, part numbers and Height specs. Info shows both 425 and 330 share the same water pumps, one for a/c car and one for non-a/c car but they all share the same shaft length of 5.072" (5") which I believe makes it the shortest of the Olds water pumps. My problem was I was trying to use the wrong crank pulley and looks like I've found a matched set, your info set me straight, thanks.

 

Glad to help and that you got it figured out Larry.
Now...On with the pics!

 

"425 and 330 share the same water pumps, one for a/c car and one for non-a/c car "
=========================
Sounds right to me


"but they all share the same shaft length of 5.072" (5") "
=========================
That sounds incorrect, I thought that the AC pump always differed- but I admit that my education is not complete in this area.


which I believe makes it the shortest of the Olds water pumps."
=========================
Correct.
Short 5.1"
Medium [called Long AT THE TIME] 5.6"
Long 6.1"

Tape measure measurements, accurate to about +/- 0.1"
It would be pointless to track a water pump measurement to the 0.001" [thousandth of an inch] for a belt driven unit which can tolerate a bit of misalignment. Factory manual figures to the 0.001" notwithstanding.

So, if anyone has a JB crank pulley they can measure the overall width of, to flesh out the database, that would be just grand.

 

I would study this carefully before buying, for the ad is riddled with misinformation.

The sellers are have a habit of bending the truth and outright lying. Among other issues.

This ad itself asserts in the title that it is an NOS part, which, by definition, is a factory issue New Old Stock part.... then later they backpedal and mention that it is in fact a reproduction item:

"This is a brand new reproduction, exact to the original in every detail, made in the same material and the same thickness. You would swear it was NOS."

Yeah, but.... it ain't. That is called a lie.




"68-69-70-71-72-73-74-Oldsmobile 442, W-30, Cutlass, W-31 Rallye 350, Hurst Olds, 88, 98- 330, 350, 400, 455 engine

Dimensions: 5 3/8" across the face & 3" deep
[replaces] KK & KF & KO 3 GROOVE WATER PUMP UPPER PULLEY AIR CONDITIONING CARS
GM# 399404 & 409807"
===================
Well, records indicate that these pulleys have different ID stamps for a reason:

KK 407534 ? measures 5.35 x 3.0 - sure, no problem, sounds like this pulley.

KF 399404 measures 6.2 diameter x 2.70" width- placing the grooves in a different location than a KK would. Not likely to align right where a KK was used. Speed will be around 15% slower which may or may not be a problem.

KO 409807 measures 5.75 diameter x [unknown] width. Smaller speed variation, unknown alignment match.


"Originals are often pitted or missing. "
===================
The flip side of that coin is "reproductions are often poorly made and do not fit and function right" - so as long as pretty trumps function, go ahead and use whatever is available new. Arizona/ TX/ WA/ CA probably have a plentiful supply of nearly perfect used 3 groove pulleys.

 

Hi Octania
As I mentioned I believe I have a matched set of 3 groove pulleys located for my 425. When I get them it should help answer some questions about water pump length and pulley diameter. When I get them I will post the information. I can verify that the crank pulley I now have, even though it is too large in diameter, does line up perfectly with the factory a/c brackets for alt and p/s pump so my conclusion is water pumps for a/c and non a/c cars are same length but should know soon.
Thanks again guys
Larry

 

Chris, JB crank pulley is 7 1/4 in diameter and 2 1/4 deep.
I found 2 of them. One is from the 70 Supreme w/455. It's mate is the JH w/p pulley.

 

Thanks tru

I will add that to the database info

I was under the impression that J_ pulleys were pre-68, and
K_ pulleys were used 1968+

I know there is a #1 to #2 groove spacing difference between the pre-68 and post-68 setups, making mix and match across the generations nigh impossible.

Perhaps the '70 was wearing a JB but did not come with it originally. I would expect to see a KB on such an engine- and there are TWO DIFFERENT KB pulleys