Oil leak, rear lower intake.

[Blackpony]

It possible you have a large gap between the intake and block. Pull the upper off, tke some brake cleaner and clean the back of the intake and block off real good. Then get a mirror and flashlight to see if you can tell where its leaking. You might be able to squeeze some silicon there and seal it up without having to pull the lower. This worked for me once many years ago.

[BlueCoupeRedVert]

It took me three times to get mine to seal. I used a lot of rtv. Put one bead down then another on top of that. No problems now.

[War Machine]

I had the same problem, but it was due to the surface not being clean. I used to use carburetor cleaner to prep the surface to clean all the oil off, then use rtv sealant. Id let it get tacky then put the intake on, never had a problem

[Baron Von Crowder]

All in all maybe a half of a tube? Rtv black I did grey the first time.

And I'll look for some that hold onto the block, mine came with cork junk

felpro's come with the blue block hugger types. Autozone has them on a lifetime warranty, so if you fuck it up you can take them back and exchange them...

[91CoupeMike]

I'll be doing this on Sunday, I'll be easy on it so I don't blow it all out. Grr.. Tired of doing it twice let alone 3 times!

[91CoupeMike]

What FastFox says
Do you recall how much silicone-sealer you used?
Should be a thick bead across. G/L

All in all maybe a half of a tube? Rtv black I did grey the first time.

And I'll look for some that hold onto the block, mine came with cork junk

[DriveWayBuilt]

Don't be shy at all with the sealer, check the corners real real good and clean them. I tried to rush one time and left some gaskets in the corners and same thing happen to me.

[91CoupeMike]

I have dimples In the intake already.

Shoot!

[robert]

What FastFox says
Do you recall how much silicone-sealer you used?
Should be a thick bead across. G/L

[46Tbird]

Can I shove some rtv in there? Or will that just leak too?

That will just leak. RTV does not stick to oily surfaces.

Not much you can do but seal it again. If you're having an issue with 'only' RTV at the manifold ends, I suggest finding a brand that uses the valley gaskets that grip the edge of the block. I can't recall if I've seen this type for an SBF, but it might be worth looking for at this point.

[FastFox]

Do it right. Pull the intake back off. Clean the block surfaces and the intake. Take a small center punch and tap a little ding in both the block surface and the intake. Put a ding about every quarter inch. Use just a little sealer and a dob at the corners. when you tork the manifold down, the gasket will be pressed into the dimples you made. The gasket will not crawl out of where it is supposed to be. I have used this method many times. I learned it from an old mechanic back in the 60's. Works well on a small block chevy too.

[91CoupeMike]

Could it be the PCV valve itself?

The grommet is dry, but the block is oily.

[Vertnut]

Could it be the PCV valve itself?

[FOKAI]

More pooky torque down let it dry call it a day. Good luck

[91CoupeMike]

Sure it's not a valve cover leak?

Yes, I can see it right behind the pcv valve. Valve covers are dry.