Bruno2 Posted January 25, 2018 Share Posted January 25, 2018 Is there another option for the rear main seal besides the rope style? Does the application differ as far as can I use a different style on my motor or am I locked into using the rope seal? I thought I had read somewhere that there was a two piece press in seal? If so does it fit all 351W's? Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 25, 2018 Share Posted January 25, 2018 There's a rubber style, but it is also a two-piece seal. Fits just like the rope seal, but you have to remove the pin before using it. The block has to be machined for a one-piece seal. I'm not sure if the 351W ever had that from the factory. Link to comment Share on other sites More sharing options...
Whisler Posted January 25, 2018 Share Posted January 25, 2018 There's a rubber style, but it is also a two-piece seal. Fits just like the rope seal, but you have to remove the pin before using it. The block has to be machined for a one-piece seal. I'm not sure if the 351W ever had that from the factory. 351W built after 7/11/83 used a one piece press-in seal. Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 25, 2018 Share Posted January 25, 2018 351W built after 7/11/83 used a one piece press-in seal. Give that man an award! Link to comment Share on other sites More sharing options...
PetesPonies Posted January 25, 2018 Share Posted January 25, 2018 Give that man an award! Bruno, what year engine do you have? Link to comment Share on other sites More sharing options...
Bruno2 Posted January 25, 2018 Author Share Posted January 25, 2018 Bruno, what year engine do you have? Gary, what year truck did that block come out of? Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 25, 2018 Share Posted January 25, 2018 Gary, what year truck did that block come out of? I don't remember for sure. It might have been from Brownie, the 1982. Or it might have been from the 1985 I parted out. I don't remember. Post a pic of the rear main location? Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 25, 2018 Share Posted January 25, 2018 I don't remember for sure. It might have been from Brownie, the 1982. Or it might have been from the 1985 I parted out. I don't remember. Post a pic of the rear main location? I believe this is saying that the block will have "6015" cast in it and that you can't use that to figure out what it is. But, just in case, here's what the catalog says for 351W's: Link to comment Share on other sites More sharing options...
Bruno2 Posted January 26, 2018 Author Share Posted January 26, 2018 I believe this is saying that the block will have "6015" cast in it and that you can't use that to figure out what it is. But, just in case, here's what the catalog says for 351W's: I will get a pic of the casting numbers as well as the main cap on the rear and post it. Link to comment Share on other sites More sharing options...
Bruno2 Posted January 31, 2018 Author Share Posted January 31, 2018 I will get a pic of the casting numbers as well as the main cap on the rear and post it. Link to comment Share on other sites More sharing options...
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