Re: Rear main seal
 

Olson's have provided me with any seal I have ever needed for my GMC 351M - you just call them and explain to them what you need. Plus the gaskets I have purchased from them are of a better quality than the NOS sets you happen to have found on EBay - theirs are fresh and of a better choice of the type of gasket construction/material. :thumbsup:

Re: Rear main seal
 

how are their prices?

Re: Rear main seal
 

I paid $45 for a neoprene rear main for a 235 stovebolt. Spendy but if installed correctly will not leak. When I was there last month they have some rope seals that they sell in bulk or build for their kits that are better designed material than what you get in Felpro kits for our big block 6s, not asbestos but with similar results. Give them a yell, they are gear heads first.
Steve