Pcv valve ???
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Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Pcv valve ???
Ok so I noticed that the tpi has two Pcv valves I'm installing pre 86 edelbrock valve covers an it only has one port for the Pcv an one big one for the oil fill plug is it ok to just use one Pcv or do I need two???
Joined: Dec 2004
Posts: 16,774
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Pcv valve ???
you will need a breather cap for the fill and the provision for the pcv on the other head and cap the tb
Thread Starter
Senior Member

Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Re: Pcv valve ???
Hmmmm weird cause when i disassembled my stock 350 today to pull the motor out i took two pcv valves off one that goes into the intake manifold an one that was hooked up to the throttle body
Joined: Apr 2005
Posts: 7,736
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
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Joined: Jan 2000
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Pcv valve ???
One is a PCV valve, one is an elbow, unless someone has done something dumb.
Thread Starter
Senior Member

Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Re: Pcv valve ???
Yea sO i think it was right do i need the elbow or could i just block it off
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Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Pcv valve ???
You need the elbow, or at least something on that side to let clean air in. The factory setup is the cleanest possible way to do it.
Thread Starter
Senior Member

Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Re: Pcv valve ???
Ok so ill just get a breather an see if that will work i then have to block it off from the throttle body
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Thread Starter
Senior Member

Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Re: Pcv valve ???
Ok so what you are saying is to get a breather woth a vac port to hook up to the throttle body an also use that as a oil fill this will be on the passenger side of the motor an for the drivers side it will be the pcv valve hooked up to manifold vac port right under the fuel rail on the drivers side of the intake manifold
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