So I need to replace my intake manifold gaskets because i'm leaking oil out the back of the manifold. I have the edelbrock performer 289 intake. Should I buy some from Summit or can I get high quality ones from say NAPA? Here are the ones I found on Summit. Fel-Pro gasket, Mr. Gasket I also see there are different port heights and widths, how do I know which one will work for me?

Lance

 

I've used both with no problems. Just be sure to throw away the cork ends[:'(] and run a bead of silicon.

 

Do you know anything about the port height/widths being different sizes?

 

The water ports were the biggest change over the years. I think 302's are all similar, but the 289 was the changeover engine, with the 260's being similar. For the actual height of what you have, I'm not too sure. You won't be hurt if the intake port size is too big, but too small can be a problem.