speed density(SD) question. - MustangForums.com



Speed Density/Carb/SSP section This section is for the Speed Density or Carb vehicles, as well as Special Service Package 'Stangs

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Old 05-27-2012, 08:43 PM   #1
jst98gtmustang
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Default speed density(SD) question.

I was wounding a few things since i'm new to 5.0.

Cams.what can i use? i was looking on ford website and some of the cams like the e303 cam and it says..

On EFI engines, performance camshafts work only with mass air induction systems. Will not work with Explorer EEC-V EFI. That mean it won't work cause i don't have a maf?
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Old 05-29-2012, 08:57 AM   #2
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Correct lobe seperation is different
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Old 05-29-2012, 06:35 PM   #3
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So what a good cam to use?
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Old 05-30-2012, 10:38 AM   #4
mattdel
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You can get a performance cam for a SD setup, it just needs proper lobe timing to maintain vacuum sufficient for MAP readings. The bigger problem is that while you can choose any cam you want (basically), nearly any cam you choose will require a professional tune unless you swap over to MAF, or unless you get a SD specific cam.

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Old 06-02-2012, 01:30 AM   #5
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you'll want to get a Mass Air Flow, a speed density system uses fixed air/fuel curves so if you do anything to take it away from stock airflow (i.e camshaft) it'll be totally lost. A mass air flow meter will learn on the fly and adjust your air/fuel mixture accordingly.
Check this article out:
http://www.musclemustangfastfords.co...n/viewall.html

Very informative.
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