1964-1970 Mustang Member Tech & Restoration Discussion

390 manifold outlet diameter?

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Old Mar 9, 2005 | 02:55 PM
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Is it 2.25in?


Also I was talking to a exhaust shop and I received a quote of $550 for all stainless steal tubing with 2 flowmaster 40 series delta flow stainless steal mufflers. Fully installed, and a 1 year warranty. Does this seem like a good price?


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Old Mar 15, 2005 | 08:34 PM
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TTT
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Old Mar 16, 2005 | 08:00 AM
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dunno about 390s, I avoid em myself

If you mean exhaust-pipe diameter, Id go 2.5 in personally.

550 seems a tad high, but muffler shops are quite variable and I dont know where in the country you are, so perhaps thats OK in your area. I think it would be high here (Aler-bamer).
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Old Mar 16, 2005 | 08:09 AM
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I know that the stock pipe is 2 inch. I will probably go with 2.5. I was wondering what the manifold was because if it was 2.25 I would just do the entire system in that. I still have to go back down to 2 at the end for the tips.
I need to tell the guy what size tube so he can order the mufflers.


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