I have a 413CI RB big block in this car. I am needing to replace the rear main seal next week, so I am shopping for a seal kit. These are the options I have, which would be the best choice? 1. Felpro 2-Piece, Fluoroelastomer seal; 2. Mr Gasket Rear Main Seal, 2-Piece Silicone; 3. Felpro 2-Piece, Rubber Rear Main Seal; or 4. Felpro Rear Main Seal, 2-Piece, OEM-Style Rope Thanks
To narrow down the choices one might consider the installation tools. You will need a rear main seal installation tool with a bridge to install the rope seal properly.
An example of installation of rope seal without the proper tool.
I wouldn’t venture to say that any one seal is the best choice. They are all designed to perform the same function.