Looks like we have a winner.  The new ‘Real Gaskets Tennessee’ oil pan gasket as installed on the 312 dyno mule has been run repeatedly on the dyno while testing some new Y-Block headers and the Mummert single plane intake manifold.  Zero leaks from the oil pan gasket.  It was installed with no sealer and torqued as per the instructions. Here are a couple of pictures of the installed gasket after a couple of dozen dyno pulls.
  

  

Lorena, Texas (South of Waco)

This is good news, thankyou Ted for all the time and effort you put into this evaluation. I'll contact the folks at RGT with this information and find out where they may want to go from here. I for sure want one of these silicone gaskets to put on my problematic oil pan. I will post information as soon as I can....

64F100 57FAIRLANE500

These style gaskets are great. I've used a similar design on trans oil pans and many other engines. I've found they are reusuable as well. 

Does the RGT have a steel core or limiting spacers around the bolt holes?

Thanks for the update!

Ted's 2nd picture in this thread shows the gasket. There is not a steel core or spacers. That's more than likely why the manufacturer publishes a specific torque. If you go to their (Real Gasket Tennessee) web site they have for quite some time offered a silicone gasket for the FE engine which is very similar in appearance and design as the Ford Y-block oil pan.  My personal experience with this type gasket was during my aviation days. RGT offers silicone gaskets for rocker covers that performed excellent, no leaks, the bolts held torque and we reused them over and over. These aviation rocker cover gaskets didn't have a steel core or limiting spacers either. My oil pan has been abused and over torqued through the decades a million times so it should be a good candidate, I believe, for such a gasket.

64F100 57FAIRLANE500

How long do you think it will be before this enters production? I would like to buy a few for my builds.

Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com

I'll pass on all information as soon as it becomes available. 

64F100 57FAIRLANE500

You might as well suggest that they make Y-block valve-cover gaskets as well. 

Yes, rocker cover gaskets and/or valley cover gaskets could come from the center section of the oil pan gasket? I have no idea of how their manufacturing process is done but this would be worth mentioning.

64F100 57FAIRLANE500

Communicated with the folks at Real Gasket Tennessee today. They informed me the pan gasket should be  on their web site by the end of next week and ready for sale by the end of the month. They are willing to produce other gaskets such as rocker cover gaskets and silicone gaskets for other possible applications on our Y-block engines. 

64F100 57FAIRLANE500

I got on their website and registered - looking forward to making this order as soon as they are available.

Thank you for your work in all of this!

Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com