Is this a long or short waterpump? [Archive] - Chevelle Tech

: Is this a long or short waterpump?


Rokker
Apr 7th, 09, 5:30 PM
Please see the pictures and help me out, I need to order new pulleys because nothing is lining up correctly, probably due to the homemade alternator bracket.
Also my crankshaft pulley is wobbley.
My waterpump pulley is full of shims and wobbling too.
Would you consider a complete serpentine kit ?
My alternator is pretty weak, and my steering pump is old, but works good though..
Hate the chrome and the modern look though...hehehe, I`m young but oldschool.
Engine is a ZZ502 which I have heard could have both short and long waterpump, which is it I have ?


http://i37.photobucket.com/albums/e97/Rockern/Vannpumpe004.jpg



http://i37.photobucket.com/albums/e97/Rockern/Vannpumpe006.jpg


http://i37.photobucket.com/albums/e97/Rockern/Vannpumpe003.jpg

bbmusclecars427
Apr 7th, 09, 5:52 PM
Looks like a short w/p to me,But that alternator top bracket is the weirdest I have ever seen! Looks homemade.:yes:

PCB67SS
Apr 7th, 09, 6:01 PM
Appears to be a short pump set up. I personally was not aware of GM make a long version in aluminum. My eyes are not what they used to be, what are the the numbers cast into the pump? I would think you could do a Google searching using GM and those part numbers and get a conclusive answer. That is a bit of mix and match on the pulleys for sure....Good Luck

Rokker
Apr 7th, 09, 6:19 PM
I know, these pulleys are about to kill me :-p
The fan belt jumps off if i rev up to 6000rpm.

The bracket looks even weirder in real life. I did not make it, but I had to weld in a "norwegian krone" ( a dime) just for fun. can you see it?
The numbers are:
8975928
5421
3401
02899
I did a google search but didn`t find any matches.
Aren`t these waterpumps actually edelbrock made, but sold as GM ?

Rodeo73
Apr 7th, 09, 7:46 PM
Short water pump.

Short pumps are about 5 1/2 inches from block to pulley mounting surface and long pumps are about 7 inches.

PCB67SS
Apr 7th, 09, 9:32 PM
Remi...Its the same pump I am running on my ZZ454 its a 3975928 and was used on L88 Corvettes....It is a short pump.....Edelbrock cast the heads and the intake but I don't think they have anything to with the pump.

Nolowrider
Apr 7th, 09, 9:54 PM
The fan belt jumps off if i rev up to 6000rpm.

Pulley alignment. I just went through this.:mad: Found out that my power steering pump was off, and went it flies off it takes the water pump belt with it.

Take a straight edge (yard stick) on the face of the pulleys or a small lazer pointer and put in the groove to see how much you are off.

THe culprit is probably the alternator bracket, allowing the alt to shift under heavy load. Get rid of that thing and i'll bet your belt stays on. :yes:

Just my 2 cents. :yes:

Rokker
Apr 8th, 09, 6:24 PM
Yes, it`s probably mainly the alternator bracket, but I know for sure I need a new crankshaft pulley too. Does anyone know of one? three holes, short pump, gen VI, 502cid, three grooves but only using the two in the front.

Anyone know an alternator bracket that will fit in the same location with short water pump?

Summit sells none of these, only a bracket for the right side, and I`m not sure it will fit together with my steering pump. And it`ll look strange too.

My best bet so far is buying one of these pulley kits:

http://store.summitracing.com/partdetail.asp?autofilter=1&part=NAL-19172806&N=700+400129+305341+4294903547+4294840133+42948891 23+115&autoview=sku

What do you think of this ? seems to be many parts for a cheap buck, sure I was hoping to solve this without having to spend 600 dollars though..

PCB67SS
Apr 8th, 09, 6:50 PM
Remi help us out some....What year car you working on? If its a 69 or later you may want to switch to a long water pump as the brackets are a lot easier to come by. The short pump from the factory placed the alternator on the driver side with the power steering pump. Most of these brackets are available reproduction but I will NOT vouch for the fitment. If you can use a long pump set up you might be able to pick up a set of brackets from a later model truck and still be money ahead. If you are striving for originality as you know it comes with a price.....Good Luck

Rokker
Apr 8th, 09, 7:01 PM
Sure forgot to mention, 1965 Chevelle ZZ502 engine so no originality issues here...
Not many trucks at the car cemetary here in Norway unfortunetaly, but sure, I might be able to find something advertised though.

K_Janisch
Apr 15th, 09, 10:09 AM
The Summit kit you mention has a long pump...which may be an issue in your 65. I have a 67 with a long water pump bbc and would like to change to short at some point to accomodate a better cooling set up. It is tight right now.

This company sells a very nice kit for converting to small pump w/serpentine belt. It doesn't show on their website but their catalog shows this kit available in black. Very nice looking set up.

http://c1pulleys.com/chevybigblockbasickits.html

Rokker
May 19th, 09, 6:36 PM
Still haven`t fixed my pulley alignment issue.
I talked to these guys at a local cruise, both had zz502 in one chevelle and one el camino.
None were 65`s. I asked about pulley setup and they told me to go with stock 1965 pulleys. Sounds like a good idea and didn`t know I could solve this that easy...
So now I need to know if 65 chevelle 396 had long or short waterpump.

Does this sound like a good idea to you guys ?

Rodeo73
May 19th, 09, 9:49 PM
The short water pump was used up thru 1968 and the long water pump from 1969 and on. The main difference in the pulley set up from short vs long is the location of the alternator. Short had it mounted on the drivers side and long mounted it on the passenger side.

The pulleys are different between big block and small block and also short vs long water pumps. Whichever setup you decide to go with, just make sure your using the proper pulleys for it.

So with your 502, use the short pump with the short pump big block pulleys ('65 - '68) or go with a long pump using the long pump big block pulleys ('69 +)

Verle
May 21st, 09, 3:01 PM
65 Chevelle big blocks were very rare. Any parts so identified will be very expensive.
There were a number of 65 full size Chevrolet big block cars.
There were a lot of 66 and 67 big block Chevelles and Chevrolets.

Any of those will work on your 65 if you get the complete set for that model.
All used short water pumps.

Rokker
May 21st, 09, 3:08 PM
HAH !! That explains why I see a crankshaft pulley at 200 dollars plus maybe ?
Thanks for the essential info, I`ll look for the other models too then, thanks alot !

Rokker
May 21st, 09, 3:42 PM
I need new alternator bracket will this fit together with my power steering ?
http://store.summitracing.com/partdetail.asp?part=TRD-8581&FROM=MG

Or do i need new power steering bracket too ? Think I have a saginaw style pump. Don`t know anything about the bracket.

Should i use a two belt or one belt setup?
All i really want is the system to be reliable and to stop throwing v-belts !!
I guess a two belt system would eat a little more power but would not have the squeal issues one can expect with a one belt setup.

Guess I could get a performance ratio crank pulley while I`m at it too. Having no trouble with high water temperatures. At least there is one advantage about living in Norway :-)

One:
crank
WP
PS
Alt

Two:
1.Crank WP Alt
2.Crank PS

What is original (not that i care too much - my car is kinda mix n trix anyways)
Thank`s for all the help guys, think I`m finally about to have a plan soon on how to fix this mess, and clean up under my hood too. Looking forward to watch out for the postage note: "your package has arrived" :-)

Would like to have black pulleys, but seems like chrome is what`s selling nowadays..