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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Lt1 valve covers

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Old Apr 6, 2007 | 08:45 PM
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Default Lt1 valve covers
Does anybody make LT1 valve covers with two breather holes in each cover???
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Old Apr 7, 2007 | 02:33 AM
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I think Canton makes custom covers. If not, you can just cut them yourself.
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Old Apr 8, 2007 | 09:33 AM
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Buy two sets of the chrome bowtie covers.
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Old Apr 11, 2007 | 09:16 PM
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Originally Posted by my94blackz
Buy two sets of the chrome bowtie covers.
Where do you get these? Do they have the cut out for the alternator?? Actually I'd be ok with one breather hole in each side but I can't seem to find any with the cut out for the alternator.
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Old Apr 11, 2007 | 09:41 PM
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moroso make a very nice set billet alumm but pricey
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Old Apr 11, 2007 | 09:45 PM
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Where would these be located??
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Old Apr 12, 2007 | 12:19 AM
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Look for a set of Stock Tuned-Port ones, they have 1 Breather on each of them, might be a little cheaper..
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Old Apr 12, 2007 | 11:19 PM
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The Cantons only have the breather hole on one side. You might be able to call them and have another cut in the other when they make them.

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Old Apr 12, 2007 | 11:34 PM
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I probably wouldn't want to pay the price for them. I can't find anything other than a set on summit that are just like the stock ones, one breather hole. I have to redo my pcv system because of the blower creating more blowby now and I need a breather on each side. This is ridiculous, can't find a damn thing for these motors anymore.
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Old Apr 12, 2007 | 11:41 PM
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Custom fab or a sump might be your only solution. Buying two sets of covers might be just as expensive as a set of custom ones.
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Old Apr 13, 2007 | 05:49 PM
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Can I ask why you want to put a breather in each valve cover. From what I understand, putting a breather on causes a vacuum leak because it is allowing unmetered air to enter.

I have heard that you can put a breather in the back hole of the passenger side valve cover. It will cause a small vacuum leak but supposedly the pcm will correct it over the long term. Putting one in the drivers side is a bad idea. It will mess with the PCV system.

Now, I am not talking from experience, this is just what I have heard and it makes sense. If anyone else has more information, chime in.

Mike
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Old Apr 13, 2007 | 07:30 PM
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I put a passenger's side (stock) cover on the driver's side and installed a breather cap on it. Found someone who was upgrading to fancier covers. Just a thought.
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