size on Flowmaster help

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05-02-2001, 04:42 PM

belly2528

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size on Flowmaster help

I was going to get a flowmaster 40 series for my F150 with the small V8. What size inlet do I need? I was thinking about going with the 2.5 outlet, or maybe the 3's

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05-02-2001, 05:17 PM

max mitchell

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The late model OEM exhaust is 2.5" in and out.

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