oil leak
 

I have a bunch of oil leaking from somewhere on my freshly rebuilt 95 LT1:confused: I'm looking everywhere but it seems to be comming from the rear upper area. I can't tell for sure unless I pull the transmission. Can't be my rear main seal can it? Any sugestions?

Have you checked to see if it's the ever-popular manifold leak?

It may be your intake manifold leaking. Reach behind it on the passenger side and feel around the seal for oil.

You can feel where the parting line is between intake and block. The EGR and oil-pressure sensor are right there as well.

What is common is that people seal this with RTV, and don't let it cure for 24 hours and the seal get broken. It generally happens in the rear, not the front, when this is done.

Easy fix.

My intake oil leak started out small, and progressively got worse. My undercarriage was also covered with oil. I repaired it a month ago and that fixed my problem. I used AC Delco gaskets and Permatex Ultra Copper for the fix. Here's some links for "how to" if you need em:

http://www.bfranker.badz28.com/fbody/intakefix.htm

http://www.projecttransam.com/projects2.asp

http://www.geocities.com/MotorCity/Downs/4013/ol.html

So, are you saying it can be fixed without actually taking the manifold off. Just simply reach back and seal with RTV?

No, no and one more no for good measure. Refer to those links I posted earlier for instructions on how to fix it.

My post was not meant to imply that at all.

I meant that a lot of repair trades people send these LT1s out, without letting the RTV cure properly. 24 hours is a timeframe many people use before the car can even be started.

I thought that would have been too easy to be true. Does anyone know the cost of this repair? I think i may have this problem, since i have noticed some small drip marks on my garage floor which seems to be coming from around the tranny and back of engine area. :(

Whoever did it should do it again.

Otherwise its about a 2 hours job. Plus 24 hours that is. :D

It's never been done before, this would be the first. Would i be losing performance?

No, I don't think you would be losing performance, but I have heard of people letting their car leak and eventually burning up the clutch (which I saw you had a manual tranny). Just a thought.

This may be a dumb question, but how would this burn up the clutch? :confused:

If you just had your engine rebuilt, then whoever did the rebuild did a poor job in making sure he sealed the back of the intake manifold. I think that's what DR.ZED meant by "whoever did it should do it again."

The engine was never rebuilt - i would hope not at only 90K. :)