Ever since I rebuilt the engine last summer and threw in some polyurethane engine mounts... the engine sits about an inch higher than it used to and it is preventing the re-installation of the my MM STB. The breather/filler neck is stopping the STB from sitting where it wants to.

What aftermarket valve covers have at least, if not more, rocker arm clearance but also have a shorter/aftermarket style breather? The ford cobra covers?

I'm using stock valve covers...can I just modify my filler neck?

I would prefer to remove the tube that goes from filler neck to the throttle body, so I assume a filter breather is needed?

I'm going for a 3,500 mile round trip road trip in a week and a half... I want my stb back so I can hit the twisties harder.

 

so your engine mounts are making the engine sit higher? thats really strange

 

The aftermarket polyurethane mounts do. At the time of purchasing them I was not aware of the special mounts that actually lower the engine.. I want to get them eventually but I really do not plan on changing out engine mounts this close to that road trip.

 

^Yeah poly mounts do that.

If you are running stock rockers the you can use just about any valve covers you want aside from tall covers because they will require an intake spacer. Running a breather and the pvc valve is generally not a good idea. You could run the breathers on your stockers if you plug the PCV.(only one breather wont be adequate.)

 

you might be able to cut the filler neck tube. take out a 1/2 inch then reweld it all the way around, making sure it is welded 100% so no air leak will be present, otherwise = unmetered air leak

 

^Word.

That is actually why running the breathers with the PCV is a bad idea. The breathers pull unmetered air. The air is redistributed for reburn through the PVC.

 

Mjr I may do that. Thanks for the idea. That shouldn't take me more than 15 minutes.

Motorman, I don't want to run both, I wanted to know if it was possible to remove the stock filler neck and put the filtered breather on it. Then plug where the PVC put the air back into the intake.