View Poll Results: Waterpumps: GM OEM vs. Napa vs. Advance Auto vs. Autozone vs. Other
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Best Waterpump: GM vs. Napa vs. Autozone vs. Advance vs. Other
10-16-2006, 08:13 PM
#42
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Originally Posted by KHShapiro
i think the ls2 pump spins slightly slower making less cavitation , depending on who the ls2 is a better pump.it will fit an ls1 you just have to pull the pulley out a bit.
like i stated earlier it is cheaper.. GL on you choice
like i stated earlier it is cheaper.. GL on you choice
Please can you elaborate:
how much should the pulley be pulled out...?
this is so the belt rides on it correctly, right...?
do you just use a large puller (jaws on pulley edges, long thread on pulley center)...?
got any pics of the LS2/LS1 pumps side-by-side...?
Joe
10-16-2006, 09:20 PM
#43
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here is a link, there where a few more list in the search
https://ls1tech.com/forums/showthrea...ls2+water+pump
looks like it gets pulled out 3/4
https://ls1tech.com/forums/showthrea...ls2+water+pump
looks like it gets pulled out 3/4
01-04-2007, 11:38 PM
#44
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I called a few dealers and they all gave my the part number below for a 2000 LS1 - this is also the part number in the parts section in the general help. Does anyone know if this requires the old style thermostat (includes inlet), and does the pulley need to be pulled out? Thanks!
*89017593
PUMP KIT
$163.85
*89017593
PUMP KIT
$163.85
01-14-2007, 05:55 PM
#45
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did yall ever find out if this is the ls2 waterpump and if its already modified for an ls1 or you have to pull out the pully 3/8"??? Also, if it is the ls2, does that mean you have to get a new thermostat?
01-20-2007, 01:35 PM
#48
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*89017593
PUMP KIT
$163.85
I just received my "pump kit" from GMpartsdirect and it had the thermostat bolted on and the two gaskets that bolt to the block. The part number on the box however is 89018053. Does anyone know if this is the LS2 or LS6 pump? I was going to call the local GM parts dept, but they're closed already. Thanks!
Ok, I just found this link: http://paceperformance.com/index.asp...D&ProdID=96975
It looks like 89018053 is the part that replaces 89017593, and this pump fits LS1, LS2 and LS6. I'm going to install next weekend, so I guess I'll see if it's a direct fit without modifying anything.
PUMP KIT
$163.85
I just received my "pump kit" from GMpartsdirect and it had the thermostat bolted on and the two gaskets that bolt to the block. The part number on the box however is 89018053. Does anyone know if this is the LS2 or LS6 pump? I was going to call the local GM parts dept, but they're closed already. Thanks!
Ok, I just found this link: http://paceperformance.com/index.asp...D&ProdID=96975
It looks like 89018053 is the part that replaces 89017593, and this pump fits LS1, LS2 and LS6. I'm going to install next weekend, so I guess I'll see if it's a direct fit without modifying anything.
Last edited by MrEddie; 01-20-2007 at 01:58 PM.
01-21-2007, 07:59 AM
#50
TECH Senior Member
The LS1 thermostat is clipped/twisted/snapped into the hose housing and these two are one unit.
The LS2 thermostat is separate from the hose housing, and so is cheaper.
The two are not interchangeable because the water pumps are different...
Also, the LS2 pump has a different flat-style pulley (which must be pulled out a little to work on a LS1)...
I remember seeing that there is one year model LS2 pump that has the old domed-style LS1 pulley...
I would like the part #, but I can't find that post anymore or I'm just losing my mind...
The LS2 thermostat is separate from the hose housing, and so is cheaper.
The two are not interchangeable because the water pumps are different...
Also, the LS2 pump has a different flat-style pulley (which must be pulled out a little to work on a LS1)...
I remember seeing that there is one year model LS2 pump that has the old domed-style LS1 pulley...
I would like the part #, but I can't find that post anymore or I'm just losing my mind...
Last edited by joecar; 01-21-2007 at 08:04 AM.
01-21-2007, 11:50 AM
#51
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The 89018053 I received has the dome styled pulley and the thermostat is molded into the inlet as one unit, so it sounds like this is the LS1 pump. I wonder why Pace Performance states it'll fit on the LS2 and LS6?
I spoke to a local dealer and they confirmed that 89018053 is the new LS1 water pump kit. Also, GMpartsdirect confirmed as well:
"89017593, has been replaced by part number 89018053. 89018053 is correct for your vehicle's water pump, per the information supplied.
Thank you for choosing www.GmPartsDirect.com"
I spoke to a local dealer and they confirmed that 89018053 is the new LS1 water pump kit. Also, GMpartsdirect confirmed as well:
"89017593, has been replaced by part number 89018053. 89018053 is correct for your vehicle's water pump, per the information supplied.
Thank you for choosing www.GmPartsDirect.com"
Last edited by MrEddie; 01-26-2007 at 09:39 AM.
03-13-2007, 07:29 PM
#52
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I installed the 89018053 with the supplied thermostat, and everything seems to work/fit fine. The one thing I noticed on the thermostat though is that the little hole in the casting that accepts a wire harness fastener does not exist on the 89018053, so my wire is dangling - it's the wire that goes in between the heater hoses. I don't think this will cause any problems, but I don't like the idea of it dangling. I'll need to fasten somewhere somehow....
03-13-2007, 08:48 PM
#53
I instaled a dealer pump and the dang T-stat was stuck closed. I couldn't use the old one as they are made differently. I had to have the car running so I had no choice but to cut the guts out of the T-stat. GM doesn't sell just the T-stat by itself and the warranty is for the whole pump assembly so to get it replaced under warranty I'd have to pull the whole pump off again.
03-20-2007, 12:36 AM
#55
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I suggest you get a Mezeire electric water pump. I run one with an underdrive and a 160 thermostat. You notice the sound of the pump at idle. It is a great improvement to the cooling system. However it is not cheap.
03-20-2007, 08:19 AM
#56
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Originally Posted by Lonewolf37
I suggest you get a Mezeire electric water pump. I run one with an underdrive and a 160 thermostat. You notice the sound of the pump at idle. It is a great improvement to the cooling system. However it is not cheap.
03-20-2007, 08:22 AM
#57
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Originally Posted by jimmypop13
can't use it on a daily driver though
03-20-2007, 11:52 AM
#58
I'm running a Autozone pump right now, don't remember how much I paid for it though. I've onl had it on for maybe 2000 miles, and it's working fine, no noise coming from it. Plus when this one takes a dump I'll be able to get a replacement for free.
03-20-2007, 05:06 PM
#59
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Evans Hi Flow
Might as well put something in there that will cool better due to higher, more balanced flow. The Evans pump can be run just fine with Dexcool - did it for 2 years. Then I switched over to the Evans NPG-R Waterless coolant - temps even better!
And yes, an electric pump will flow the same rate whether at idle or cruise - problem is, the flow is not high enough at idle conditions (not as high as mechanical pump flow at idle) when you really need it. Flow rate becomes not as important when you are cruising.
Might as well put something in there that will cool better due to higher, more balanced flow. The Evans pump can be run just fine with Dexcool - did it for 2 years. Then I switched over to the Evans NPG-R Waterless coolant - temps even better!
it will pump the same amount of water whether its at idle or cruising down the highway.
Last edited by 1QUIKWS6; 03-20-2007 at 05:12 PM.
03-20-2007, 05:51 PM
#60
Originally Posted by jimmypop13
can't use it on a daily driver though
Originally Posted by 1QUIKWS6
And yes, an electric pump will flow the same rate whether at idle or cruise - problem is, the flow is not high enough at idle conditions (not as high as mechanical pump flow at idle) when you really need it.