Breather cap removal help

[73chgrSE]

Decided to pull valve covers to clean and paint.

How do you get the stock breather cap off? Stock valve covers on 400 block.

Thanks in advance!

[Nacho-RT74]

Pull it out. Seal must by hardened so could need to "jiggle it". Mostly sure, will need to replace the seal too.

[b5blue]

Twist off for 70 up. 

[Nacho-RT74]

I had to pry it up on my 74. The seal was so hard that there was no other way to do it. Then replaced the seal and installed back after a good cleaning and fresh paint

[John_Kunkel]

In '73 the "breather" pushes into a rubber grommet, the "oil filler cap" twists off.

[Nacho-RT74]

I think is the same for BB and SB blocks, but here is the example... one for breather the other one for PCV

https://www.classicindustries.com/product/md2324.html

http://www.billrolikenterprises.com/proddetail.asp?prod=1006