E303 in a 351w - Page 2 - Ford Bronco Forum
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post #21 of 21 (permalink) Old 03-19-2017, 10:01 PM
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Join Date: Dec 2007
Location: The Mitten
Posts: 8,748
Bronco Info: 1995 XLT 5.8 with 97k miles, WARN Premium Hubs
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Originally Posted by silver70 View Post
I'm wondering if it's a roller 5.8L. The ramp rates on roller cams are more aggressive than flat tappet and could be responsible for developing enough vacuum to keep the MAP sensor happy. Just a theory.

Hey sackman, was that 351W a roller motor?
Yes indeed it is. I even reused the original lifters after a complete tear down and cleaning.
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