F303 cam help - Mustang Evolution

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Old 03-26-2013, 05:54 PM   #1
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F303 cam help

Does this cam burn alot of gas for a daily driver
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Old 03-26-2013, 06:41 PM   #2
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Any time you add performance you will most likely lose some mpgs. I would guess around 1-2 loose.
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Old 03-26-2013, 09:29 PM   #3
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b303 is better if you're not going forced induction I believe. (its possible I have it backwards)
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Old 03-26-2013, 09:34 PM   #4
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F303 is the bigger cam. it runs fine on na build but is ground for FI. B303 is pretty much an na cam.
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Old 03-26-2013, 09:41 PM   #5
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So if he was going to stay NA would a b303 with 1.7 rr be better?
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Old 03-26-2013, 09:57 PM   #6
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Probably. A b303 with 1.7 will close in lift to a f303 with 1.6. But its hard to say exactly which can would make most power as every setup varies. I would pick tfs stage 1 personally.
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Old 03-27-2013, 12:41 AM   #7
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I went and bought the f303 from ford racing thanks for your imput.. Now would y'all suggest i should get new valve springs???
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Old 03-27-2013, 01:03 AM   #8
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Quote:
Originally Posted by Ronn501 View Post
I went and bought the f303 from ford racing thanks for your imput.. Now would y'all suggest i should get new valve springs???
Yes. Check out a set of comp cams springs. I dont know the specs on the f cam off hand but i would definitely check your piston to valve clearance. Do you have a stock short block?
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Old 03-27-2013, 01:30 AM   #9
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Congrats! Enjoy your new power!
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Old 03-27-2013, 06:06 AM   #10
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Nice! And yes you will need new valve springs.
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Old 03-27-2013, 01:03 PM   #11
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Thanks and yes it's at 1997 mercury mountaineer 302 gt40p
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