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Catch Can/PCV routing.

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Old 08-14-2011, 09:54 AM
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Default Catch Can/PCV routing.

How are you guys running your catch cans? Sure I could post this in the proper section but what fun is that.

Pics would be great.

Seems to be up for debate on whats the best way, especially on the early 98-99 ls1's....
Old 08-14-2011, 10:22 AM
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Old 08-14-2011, 10:23 AM
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The drivers side valve cover fed into the breather on the far left in the pic above.

Last edited by tektrans; 08-14-2011 at 10:24 AM. Reason: ..........
Old 08-14-2011, 10:30 AM
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Every time I see a pic of that motor I get wood.
Old 08-14-2011, 11:43 AM
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Originally Posted by 4DRUSH
Every time I see a pic of that motor I get wood.
This!!!! Makes typing on a laptop difficult
Old 08-14-2011, 12:46 PM
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Yepp Matt that pic shows it all.... Vent the crankcase from the valve covers and you want to pull vacum from the catch can...

F/I blower you would put a check vavle on the vacum...
Old 08-14-2011, 04:54 PM
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Doesnt a factory ls1 set up have a port on the TB for fresh air? Wouldnt that connect to the catch can and then the vent from the valve covers to the catch can also?
Old 08-14-2011, 06:15 PM
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yes low on the intake behind the TB
Old 08-14-2011, 06:19 PM
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Originally Posted by Devilish34
yes low on the intake behind the TB
Just like the pic shows it... It the little black hose coming off the throttle body (right behind the throttle cable wheel) going to the catch can...




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