LT 1 style valve covers
Thread Starter
Racer
Joined: Feb 2012
Posts: 421
Likes: 27
From: Harrisburg PA
LT 1 style valve covers
I have some NOS LT1 valve covers I'm adding to dress up the engine a bit...
I do not run the stock air cleaner assembly ('77).
I have also eliminated most of the smog equipment...
My question is what are you all running for a breather in the passenger valve cover (the hole is smaller than most other valve covers)?
I do not run the stock air cleaner assembly ('77).
I have also eliminated most of the smog equipment...
My question is what are you all running for a breather in the passenger valve cover (the hole is smaller than most other valve covers)?
Thread Starter
Racer
Joined: Feb 2012
Posts: 421
Likes: 27
From: Harrisburg PA
Yeah--what I am finding though, is that the hole in the LT1 valve cover is smaller than the hole in the stamped steel covers...
Trying to get an idea which ones will fit...the parts stores around here all seem to have only the larger size...
Trying to get an idea which ones will fit...the parts stores around here all seem to have only the larger size...
Team Owner
Joined: Sep 2006
Posts: 31,278
Likes: 4,372
From: Westminster Maryland
Hi Keith,
Because the thickness of the LT-! valve cover is greater than the thickness of the stamped steel valve cover I believe there's a slightly different grommet for each application.
Do you have the one specifically for the aluminum valve cover.
Regards,
Alan
For instance ZIP VC-210.
Because the thickness of the LT-! valve cover is greater than the thickness of the stamped steel valve cover I believe there's a slightly different grommet for each application.
Do you have the one specifically for the aluminum valve cover.
Regards,
Alan
For instance ZIP VC-210.
Last edited by Alan 71; Sep 23, 2017 at 07:32 AM.
Le Mans Master
Joined: Mar 2004
Posts: 7,499
Likes: 1,507
From: Little Rock AR
One valve cover has exit hole for the PCV valve. The other valve cover hole accepted a steel line that went to the small crankcase air intake filter mounted inside the factory main air cleaner assembly.
The PCV system filtered the air before it went into the crankcase then sucked it out the other side thru the PCV valve.
If you just put breathers on both sides you will be cleaning oily vapor residue off the valve covers every time you lift the hood due to crankcase air pressure blowing out.
The PCV system filtered the air before it went into the crankcase then sucked it out the other side thru the PCV valve.
If you just put breathers on both sides you will be cleaning oily vapor residue off the valve covers every time you lift the hood due to crankcase air pressure blowing out.
Thread Starter
Racer
Joined: Feb 2012
Posts: 421
Likes: 27
From: Harrisburg PA
One valve cover has exit hole for the PCV valve. The other valve cover hole accepted a steel line that went to the small crankcase air intake filter mounted inside the factory main air cleaner assembly.
The PCV system filtered the air before it went into the crankcase then sucked it out the other side thru the PCV valve.
If you just put breathers on both sides you will be cleaning oily vapor residue off the valve covers every time you lift the hood due to crankcase air pressure blowing out.
The PCV system filtered the air before it went into the crankcase then sucked it out the other side thru the PCV valve.
If you just put breathers on both sides you will be cleaning oily vapor residue off the valve covers every time you lift the hood due to crankcase air pressure blowing out.
I am just looking for ideas for a filtered breather to put in the passenger side...given the smaller than "normal" hole in the aluminum cover, I am trying to figure out the best part number to get...
I am assuming I need a 3/4 push in breather? Is there another size, etc?
Thread Starter
Racer
Joined: Feb 2012
Posts: 421
Likes: 27
From: Harrisburg PA
Hi Keith,
Because the thickness of the LT-! valve cover is greater than the thickness of the stamped steel valve cover I believe there's a slightly different grommet for each application.
Do you have the one specifically for the aluminum valve cover.
Regards,
Alan
For instance ZIP VC-210.
Because the thickness of the LT-! valve cover is greater than the thickness of the stamped steel valve cover I believe there's a slightly different grommet for each application.
Do you have the one specifically for the aluminum valve cover.
Regards,
Alan
For instance ZIP VC-210.
Team Owner
Joined: Sep 2006
Posts: 31,278
Likes: 4,372
From: Westminster Maryland
Hi k,
Here's a photo of the grommet I posted installed in an LT-! valve cover with the elbow that fits it.
I'd think you should be able to find a breather that fits that grommet.
Regards,
Alan
Here's a photo of the grommet I posted installed in an LT-! valve cover with the elbow that fits it.
I'd think you should be able to find a breather that fits that grommet.
Regards,
Alan
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Thread Starter
Racer
Joined: Feb 2012
Posts: 421
Likes: 27
From: Harrisburg PA
Le Mans Master
Joined: Mar 2004
Posts: 7,499
Likes: 1,507
From: Little Rock AR
OP will need the elbow, special rubber hose and the little disposable filter element/retainer. Cut hole in base of new air cleaner and pop it on. It will look good and work right.
Last edited by stingr69; Sep 25, 2017 at 09:21 AM.