Go Back   CamaroZ28.Com Message Board > 1967-2002 Powertrain Discussion > LT1 Based Engine Tech
Sign in using an external account
Register Forgot Password?

Reply Post New Thread
LinkBack Thread Tools Search this Thread Display Modes
Old 07-26-2014, 05:39 PM   #1
Registered User
jshow816's Avatar
Join Date: May 2014
Posts: 21
PCV Opinion

I've had my LT1 for a few months now and it seems to be running very well, I've just been trying to figure out all the things the previous owner had modded / deleted since the list of changes he gave me appears to be somewhat incomplete.

Anyways, the previous owner removed the PCV line on from the passenger side valve cover, installed a breather and capped the inlet on the throttle body.

I've been reading a bit and the consensus appears that a functioning PCV system is better than the breather.. ?

I've also read that if an air foil is installed in the throttle body it will block the flow for the pcv system. My car DOES have an airfoil..

Driver side pcv system appears to unmodified.. (although I'm not 100% sure of what should be there)

So I'm looking for opinions here, what would you do? Retrofit the PCV system back to stock? Leave it be? Modify the driver side? Let me know what you guys think.

This ad is not displayed to registered members.
Register your free account today and become a member on CamaroZ28.com!
'96 Camaro, '94 LT1, cai, ported maf, hotcam kit, 1.6 roller rockers, shorty headers, tune, A4 w/ 2700 Stall, 3.42 Gears, cat/egr/air/evap delete, borla resonator, hooker muffler, ls1 front brakes, strut tower brace, 1LE front swaybar, BMR lowering springs, adj panhard, tubular control arms, bilstein shocks
jshow816 is offline   Reply With Quote
Old 07-26-2014, 09:27 PM   #2
Registered User
Join Date: Nov 2002
Location: Jacksonville
Posts: 4,754
Send a message via AIM to 97WS6SCharged
Re: PCV Opinion

As you describe it your PCV system is still functioning but it's allowing unmetered air into the engine through the filter on the valve cover.

The air foil should not block air from the system. It might hinder it a bit but it won't completely stop it.

I'd get rid of the filter on the valve cover and reconnect the supply line from the throttle body.
97WS6SCharged is offline   Reply With Quote
Old 07-27-2014, 10:15 AM   #3
Super Moderator
Injuneer's Avatar
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 42,140
Re: PCV Opinion

Agree - keep the PVC system in the factory configuration - works fine. Some people delete the clean air supply line from the throttle body to the valve cover because they have oil blowing out of the valve cover, into the line, and into the throttle body. That is often the result of a plugged PCV valve, broken vacuum line to the PCV valve, or excessive piston ring blowby.

If you feel the the air foil is blocking the air flow, you have two choices - drill a small hole in the upper part of the air foil to allow increased air flow, or simply delete the air foil. It's not doing much:

Drivetrain Modifications #4

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 07-27-2014, 10:15 AM
Reply Post New Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 12:20 PM.

Copyright © 1996-2013 CamaroZ28.Com. All rights reserved.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.