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i believe you are correct on the fiberglass make up. i installed one in an engine 11 years ago, and it's leaking, started about six months after installation. i installed this felpro in my same hemi combo as troy, but it leaked. i probably chalk that one up to installer error, even though i thought it looked good upon install and later, removal.

i also installed one of the graphite ropes in my gto, (had VERY troublesome problems getting any seal to work, so i went to the graphite rope), and it has been great. that being said, i firmly believe in the graphite rope. i could not drag the graphite rope seal into/around the hemi crank like the fiber ones, so beware if that is your plan, they don't really like being installed that way, crank out worked best for me, as per the instructions as well.....




Lots of good information here on Moparts, but I swear that I got alot more done in the pre-internet days when I only knew of one way to make a fix to something. Now I hem and haw about which is the best of six or more ways to skin every cat. Was just about to button up the bottom end of my 383 with a Felpro rope seal but am having second thought about ordering the graphite one from Best.

I had looked into Best a few months back but was under the impression that they didn't make a rope seal for a Mopar big block. JohnRR, what is the part number for the Best seal you are ordering from Egge?