First Generation Firebird-L Mailing List ......................................................................... My '76 455 block is just about done at the machinists and I was about to order a new Viton rear main seal to cure what I read is a common problem with Pontiac blocks, a leaky rear rope seals. My machinist found this bulletin through Engine rebuilders association. http://www3.telus.net/public/68bird/engine_ropeseal_tech.htm Which I had not heard about before. Upon measuring my block, sure enough it is slightly different depths at each end of the seal groove. He recommended not using the viton seal and using the rope in my felpro gasket kit. I have read nothing good about these non-asbestos rear main seals. Found this on the net. http://www.streetrodderweb.com/tech/0810sr_bestgasket_rope_seals_ford_y_bloc k/photo_01.html they make a pontiac sized one.
Anybody use it yet?, or have any opinions on the rear main seal problem? Thanks. Kelly R medhat68 http://www3.telus.net/public/68bird/index.htm ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/> Donations: <http://FirstGenFirebird.org/store/cart.mv?999999> FGF Merchandise: <http://FirstGenFirebird.org/store>
