Are they really necessary?

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1966 Plymouth Valiant, 225, 3 on the tree, 8 1/4 3.21 sure grip, hyperpac, holley 650dp, holset h1c

Yes. If you will ask a more detailed question so we know what you have in mind to do, we'll probably be able to give you a more detailed answer.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I got one of these
http://www.kmjent.com/cart/product.php? ... 545&page=1
They dont have baffles, I've run a few slants with the vc off and haven't seen anything to lead me to believe they are necessary. anyhow it's gonna be mostly a strip car. Limited street use.

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1966 Plymouth Valiant, 225, 3 on the tree, 8 1/4 3.21 sure grip, hyperpac, holley 650dp, holset h1c

Put the stock valve cover back on -- those Chinese chrome ones are junk. See Thread 1 Thread 2 Thread 3. If you are bound and determined to use the chrome valve cover on your engine, and if you can hack the bolt holes so they line up OK, then set up the breather and PCV this way.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

If it is limited street use, then no worries on the baffles. You can get a baffled grommet for the breather hole, if driving a lot on the street/hwy.

I have been running one of those trans-dapt/no-name VC's for about 20 yrs on my '68 and '64 Darts (about 250k miles combined). I agree that the factory style is better designed, but personal experience says the others are fine too. Maybe the later made ones are worse, but they look like what I have.

Lou

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Home of Slant6-powered fun machines since 1988

I run one as well but like Dan suggested using the sealed Spectre PCV and the sealed air breather connected to another filter inside the air cleaner filter housing with baffled grommets.

Reference: Spectre Breather w/Dorman #42344 gasket 11/2008 This is the PCV unit I used http://www.spectreperformance.com/#CATALOG.4284
With this air breather http://www.spectreperformance.com/#CATALOG.4279 and the Spectre Valve Cover.

You could also JB Weld or bolt in a baffle as well.

Click on the red link below to view both set ups (stock and with the chrome Spectre Valve Cover.

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

I have the GM PCV do-dad on mine. I have a MP breather. Yes, you get a little oil coming out of it. No big deal. Take a nice clean rag and wipe it down. It keeps it from rusting!

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick