How to remove the water pump pulley?
lol, no, there is a belt tensioner... its the thing u can see thats the furthest up where the pulley is. I think u use a 15mm socket wrench and turn it to the right, and that will release tension on the belt, then slide it off the water pump. Should work like a charm, although i dont know if i explained it too well, maybe someone else can give a better explination. The tensioner is located at the top left of the water pump if ur lookin at the engine from the nose of the car.
Follow birdman's advice on removing the belt, then remove the lid/MAF/bellow/plastic piece the lid sits on. You can also remove the throttle body if you want. Then there's 6 10mm bolts holding the water pump on. Remove those and it will come off, though you may have to pry it.
http://ls1howto.com/index.php?article=23
That is the cam swap artical, which includes removing the pump. You won't have to remove the valve covers or any of that crap.
http://ls1howto.com/index.php?article=23
That is the cam swap artical, which includes removing the pump. You won't have to remove the valve covers or any of that crap.
Thread Starter
On The Tree
Joined: Oct 2006
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On my engine, the water pump pulley is a big round cap that doesn't have bolts to remove. I got the belt off. The engine is not in a car at this time. (well it's in the frame, but the body is off) so I have lot's of room to work on o it, but I don't see how to remove the water pump pulley?? Do you pry it off or use a pulley puller?
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From: Back in Jacksonville rapin rice!
Im not even sure how the heck you could get that thing off without tearing something up. Any particular reason you just want the pulley itself? A new pump is only like a $150 at autozone.
On The Tree
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From: Tampa,Fl
I read an article in a mag that showed an engine on a dyno that had some type of tall hillborn like stacks for an intake and had a water pump that had a chrome pully on it. I wondered about the same thing but did not want to ask 
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From: Back in Jacksonville rapin rice!
I've changed two and I played with the old ones and never could see exactly how the pulley was attached, maybe pressed on, im not sure. You might do better getting an electric, those are pretty dressed up, and give a little performance advantage.
Removing the pulley with a puller may work, but how do you plan on getting the pulley back on? There are no threads to pull in back on, and pressing it on will just push the shaft right out of the back of the pump housing, destroying the pump.
97-98 LS1s had pumps with bolt-on pullies, while all later LS1s had the press fit. If you want to customize the water pump pulley, you will need to buy a water pump and pulley for the older 98 F-body LS1.
97-98 LS1s had pumps with bolt-on pullies, while all later LS1s had the press fit. If you want to customize the water pump pulley, you will need to buy a water pump and pulley for the older 98 F-body LS1.
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From: Back in Jacksonville rapin rice!
Marc is right you might get it off, but your going to destroy it putting it back on, that aluminum cant take alot stress like that. If your die hard about customizing it then you'll be better off just getting that 98 pump that you can take apart.
if you have a shop press you can get them off..i have done them..take the 5 bolts of the back of the pump off and using a press it will come off..dont use a puller it will tear the pully up..
Is there a gasket on the door located on the back of the water pump? I was trying to figure out how to get the pulley off and I though of taking that back door off... but then I was afraid it would leak from the back of the pump when I put it back together. Does that rear door hold water in??
Originally Posted by dirt_track_racer_81
if you have a shop press you can get them off..i have done them..take the 5 bolts of the back of the pump off and using a press it will come off..dont use a puller it will tear the pully up..
