C2:67 Valve Cover Gaskets

[Gerard F.]

Replacing my speedshop aluminum valve covers, which have been on my 327/300Hp since 1968, with original steel covers. Need recommendation on gaskets, cork or Felpro? Have both.


Can I expect some changes in performance or heating?

Jerry Fuccillo
#42179

[Jack H.]

Re: C2:67 Valve Cover Gaskets

Factory originals were cork, if the concours matters to you. Don't expect any change in performance/heating.

One BIG tip on stamped steel valve covers is to MAKE SURE the edges are flat & true before you install them. Run a straight edge along the bottom lips and if they're warpped in the typical places (beneath fastener locations), lay them on a flat surface and tap them back flat/true before going any further.

Then, when installing, do NOT over-torque the bolts! Remember, the gasket needs to 'breathe' during engine thermal cycles and that expansion/contraction is built into GM's recommended torque specs.

[Ed Jennings]

Re: C2:67 Valve Cover Gaskets

Also, don't forget the "flying saucer" shaped washers that are designed to spread the load on the stamped steel covers.