Holley valve covers, grommets?

bradr440 said

I have a set of Holley valve covers similar to the ones in the picture. Anyone else run these? Where did you get grommets and what breathers are you running?
I have a oil filler cap in one hole, so that leaves me with two holes 1 1/2 in diameter.
Thanks!

View attachment 1715127418

Click to expand...

They are the same as the M/T valve covers but not the same as the Mopar Performance covers.

IIRC the 1.5" holes are for the push in breather and the PCV valve. The other knockouts accept a 1/4 turn cap (or breather). In fact, looking at your picture those two open holes may be the 1/4 turns.

Mattax said

Holley p/n 241-214 has two grommets with a 3/4" PCV hole for the M/T valve covers.

Click to expand...

Long version & pictures here:
PCV grommet | Moparts Question and Answer | Moparts Forums