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Old Jun 19, 2015 | 05:16 AM
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Default Tensioner pully

Does anyone know where I can get a 1974 454 water pump tensioner
Thanks
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Old Jun 19, 2015 | 06:05 AM
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Originally Posted by genep
Does anyone know where I can get a 1974 454 water pump tensioner
Thanks

You can make one like I did.
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Old Jun 19, 2015 | 06:49 AM
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All of the Corvette vendors carry the stock one used on air conditioned big blocks. They sell for about $140, and most vendors refer to them as an idler pulley.
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Old Jun 20, 2015 | 12:14 AM
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OR you can be really cheap and run with the captured belt like the 69's had. Belt around the water pump and the crank. You have to pull the fan to replace it.

On second thought, that might not work- the pulley diameters need to be kind of matched between the first and second grooves. And if you're going for show points, it's not original for your year.
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Old Jun 20, 2015 | 12:40 AM
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Mine has all the original parts , spacers , washers , bolts etc. ......I say this to let you know , you'll need to get everything CORRECT or it all won't line up exact . I suppose you have an Assembly Manuel . It's really hard to even see the thing down in there ....lol

A bit like a jigsaw puzzle . Especially if you didn't have one to take off

I was nervous , would I get everything back exactly like it came off .....lol

The gaps between some items it like 3/16 of inch or less.

Knowing how crap is so cheaply reproduced today....about half azzed to boot .....as most seems ..I d be surprised if repop stuff would line up right.

Anyway a wrong or too thick or too many washers in the wrong spot might cause odd wear , rub, noise ...etc..

And .....don't crank back on it too tight. The bearing is kinda small inside the idler

I remember it not being a lot of fun .....I replaced my water pump has all that crap off........pita

Last edited by LS4 PILOT; Jun 20, 2015 at 12:49 AM.
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