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Discussion Starter · #1 ·
I need to know how many of you have had rear main seals leakage when using aftermarket stroker kit in 351W vintage block with 2 pc rear seals.

I am facing a situation where a brand new 408 shortblock was built by a very reputable racing machine shop in Arkansas...upon 40 minutes of initial start up the rear main seal immediately start to leaks.

So far I have no positive responses from the machine shop. I like to keep the shop name hidden for now...

Thank you for your help.
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