[Demonator]

I have a 6th gen SS, and I couldn't find many pictures of carbon buildup on intake valves to see if a catch can was really necessary. I was installing the LT2 manifold so I figured I would check and show you guys. Here you go:

https://www.instagram.com/tv/CVg9eMm..._web_copy_link

Let me know what you guys think.

[Gunkk]

Not bad for 53k.

Top tier fuel? Brand and octane?
Daily driver?
Oil brand and weights?

[Dabjbr]

I don’t think fuel has anything to do with carbon build up being this is DI.

It would matter if it were port injected.

[Nilly Welson]

I don't have instagram

[wwiiavfan]

Driving style?
1-5, where 1= I drive it like there’s an egg under the gas pedal and 5= I drive it like I stole it.

[jamala00]

Thx for the vid... Doesn't look bad to me. Good to know, I have just under 45k on mine.

[GM-ACE]

Not surprising, but good info.
BTW, for those that don't know, the LT1 does have a "catch can", it just drains the trapped and condensed vapor back into the crankcase. I suspect that's why they upped the amount of oil in the motor to 10 friggin quarts. Dilution.

[m6-lt1]

Originally Posted by GM-ACE

Not surprising, but good info.
BTW, for those that don't know, the LT1 does have a "catch can", it just drains the trapped and condensed vapor back into the crankcase. I suspect that's why they upped the amount of oil in the motor to 10 friggin quarts. Dilution.

You’re going to be told by people who run catch cans that the stock catch can only catches oil from the clean side, the dirty side also needs a catch can which we don’t have stock.

The ten quarts is so that there won’t be oil starvation on the track since GM couldn’t fit the dry sump tanks from the vette in the Camaro.

I find the video the op posted to be very encouraging and what I expected them to look like based on other pictures people showed of their intake valves. I’m going to continue not to run a separate catch can.

[hotlap]

Interesting to see the valve after this many miles. The LT1 has been in production since 2014 so there are plenty out in the world. I haven't seen one yet with excessive valve coking

[hotlap]

Originally Posted by m6-lt1

You’re going to be told by people who run catch cans that the stock catch can only catches oil from the clean side, the dirty side also needs a catch can which we don’t have stock.

The ten quarts is so that there won’t be oil starvation on the track since GM couldn’t fit the dry sump tanks from the vette in the Camaro.

I find the video the op posted to be very encouraging and what I expected them to look like based on other pictures people showed of their intake valves. I’m going to continue not to run a separate catch can.

GM press release describes as

PCV-integrated rocker covers: One of the most distinctive features of the new engine is its domed rocker covers, which house the, patent-pending, integrated positive crankcase ventilation (PCV) system that enhances oil economy and oil life, while reducing oil consumption and contributing to low emissions. The rocker covers also hold the direct-mount ignition coils for the coil-near-plug ignition system. Between the individual coil packs, the domed sections of the covers contain baffles that separate oil and air from the crankcase gases – about three times the oil/air separation capability of previous engines.

https://media.chevrolet.com/media/us...mallBlock.html

[Demonator]

I bought the car at 48k miles so I can't attest to the driving style. I know all oil changes were done at Chevy so I'm assuming OEM fluid was always used.

I actually did get a catch can before looking at the valves because I am putting on bolt ons, but I just wanted to show people it probably isn't something to worry about for a stock car.

[N Camarolina]

Originally Posted by Demonator

I have a 6th gen SS, and I couldn't find many pictures of carbon buildup on intake valves to see if a catch can was really necessary. I was installing the LT2 manifold so I figured I would check and show you guys. Here you go:

https://www.instagram.com/tv/CVg9eMm..._web_copy_link

Let me know what you guys think.

Thanks so much for posting your experience. I was bending toward not using one and this reassures me that it's probably not necessary.

[willzilla]

Nice! Looks good! I installed a catch can at 1k or so miles as I plan to keep the car.. forever? If just planning to drive and trade out in a few years I wouldn't of bothered, lol.

[v8]

That's actually pretty good, I wonder if that's as bad as it will get (meaning once it gets to that point it just kinda stays like that)