2007 Base need a 'catch can' ?
Thread Starter
Race Director
Joined: Aug 1999
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From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
2007 Base need a 'catch can' ?
I was just wondering about a Catch Can on my LS2, is a catch can needed on a base LS2, not really a wild driver.
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From: SW Florida
2021 C6 of the Year Finalist - Modified
Pro
Joined: Sep 2020
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From: Ogden, Utah
I have been looking into this a lot for an 800hp blown ls3. Assuming your LS2 is stock there is absolutely no need for one. Money best spent else where. Add a supercharger...then yes get one. A stock LS2 or 3 C6 really dosen't "need" anything. In stock form these cars are set up well.
Last edited by D-Dub2013; Jan 8, 2021 at 12:52 AM.
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No, that when you come off WOT with high revs, the dirty side of the PVC system will be pulling back in a lot of oil on the vacuum surge.
So if not rev ranging, no need for catch can, but if you are rev ranging a great deal, then both clean and dirty sides of the PCV system need to be caught if you are trying to keep the excess PCV system oil out of the intake manifold.
Race Director
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From: SW Florida
2021 C6 of the Year Finalist - Modified
I still think a bone stock LS engine even could benefit from a catch can ... When my LS3 was bone stock, I removed the throttle body just to find that there was lots of oil laying in the bottom of the intake manifold (I wish I had taken a photo of it).
If a good / well designed catch can can keep even 50% of all this oil out of the intake, it would be worth it to me to install one.
If a good / well designed catch can can keep even 50% of all this oil out of the intake, it would be worth it to me to install one.
Thread Starter
Race Director
Joined: Aug 1999
Posts: 11,114
Likes: 669
From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
Thank you, I don't track or road cross the car in any racing or high revving incenses, once in awhile some WOT just to get the blood pressure up, and I'm a little confused by the capacity of a catch can. I see all different capacities and what is a realist capacity for a Catch car, if there was a need for one on a stock LS2. I like that idea of supercharging the stock engine, but again I have to realize what is the intended use. When you own a Corvette, you always want to be on the leading edge of advances or useful modification the are both money well spent and well thought out.
Thank you !
Thank you !
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Melting Slicks
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From: Klein TX
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A catch can is simply a liquid/gas separator with some built in capacity to store liquids removed from blowby vapors. It's purpose, other than to look cool at car shows, is to keep a nasty mix of oil & and a little water out of your intake manifold. A good one, installed correctly, will do just that.
Whether or not it is "necessary" is up to you.
Whether or not it is "necessary" is up to you.
Last edited by wjnjr; Jan 8, 2021 at 06:53 PM.
Burning Brakes
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Mine might hold about 6 oz. total, but I only drain about 1 oz. of oil out of it every 2,000 miles.
That's 1 oz. of dirty contaminated oil that is not going into my supercharger every 2,000 miles (and gumming everything up).
Does a great job of removing most of the oil from the crankcase gasses.
That's 1 oz. of dirty contaminated oil that is not going into my supercharger every 2,000 miles (and gumming everything up).
Does a great job of removing most of the oil from the crankcase gasses.
Last edited by Turbo6TA; Jan 8, 2021 at 11:10 PM.
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Won't hurt anything unless you don't empty it when full or it freezes, but not necessary. I put 75k miles on a cammed/pullied down MP112/stalled 5.3 in my 2002 Avalanche without a catch can and had no issues. 95k total miles on the truck when I traded to an F-150 in 2015.
Instructor
Joined: Sep 2020
Posts: 118
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From: Central PA
I still think a bone stock LS engine even could benefit from a catch can ... When my LS3 was bone stock, I removed the throttle body just to find that there was lots of oil laying in the bottom of the intake manifold (I wish I had taken a photo of it).
If a good / well designed catch can can keep even 50% of all this oil out of the intake, it would be worth it to me to install one.
If a good / well designed catch can can keep even 50% of all this oil out of the intake, it would be worth it to me to install one.
