rear main seal problem need help

11-09-2005, 09:14 AM

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rear main seal problem need help

rear main came completely out . I have a newly built forged 347 with sts.
What could cause this? I'm out of ideas.

11-09-2005, 09:46 AM

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bad install or too much crankcase pressure (or combo of both).

Are your rings gapped for boost??